[meteorite-list] contemporary lunar impacts
Oops, sent in richtext... - Forwarded Message - From: Mark Bowling mina...@yahoo.com To: Bernd V. Pauli bernd.pa...@paulinet.de; meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Thursday, October 27, 2011 9:58 PM Subject: contemporary lunar impacts Bernd, That is a very interesting reference. William Herschel is one of my favorite historical figures I remember reading about his observations of lunar volcanoes in a book titled little known science oddities book (or something like that - I still have that book somewhere in my collection). It always fascinated me and when I studied geology at university, I always remembered his claim whenever we studied volcanoes or impacts. I didn't take my geology studies quite as far as I should have and I never took the time to research whether large impacts could produce enough melted rock to leave a glowing scar or not. I don't know if I ever posed that question to any of my professors, but I always got the impression that, since the moon is volcanically dead, it wasn't very likely. But I'd like to think it can, and that such a great observer was blessed to see such a unique event. I would like to hear more from others who know about this topic. I recently had a brief look at a site which discussed how amateurs (?) have been detecting meteor impacts on the moon. It could have been the Cloudbait Observatory, Thomas Ashcraft's site or a site in Canada?? Pretty fascinating stuff! I look forward to getting my telescope back up and running soon:) Thanks for bringing this up! Clear skies, Mark B. Vail, AZ From: Bernd V. Pauli bernd.pa...@paulinet.de To: meteorite-list@meteoritecentral.com Sent: Thursday, October 27, 2011 2:03 PM Subject: [meteorite-list] The Dark Side.. Oops! Phil wrote: Do people still say 'dark side of the moon' when referring to the far side of the moon? Lunar Volcanoes - William Herschel observed lunar lights (Astronomy Now, April 1999, p. 58): April 19, 1787. I perceive three volcanoes in different places of the d a r k s i d e of the new moon. Best wishes, Bernd __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Thief!
Dear List It is all a terrible mistake ... I was in my Halloween costume! Next time you're swing a metal detector against some moss in the woods, if a tree talks back, check on your pockets! http://www.nypost.com/p/news/national/oregon_museum_science_sniper_camo_EncebfiWfLCJ0t8f7QMeZL http://findarticles.com/p/news-articles/columbian-vancouver-wash/mi_8100/is_20040810/museum-displays-meteorite-samples/ai_n51293517/ Meteorite Display: In 2004 the Cascadia Meteorite Laboratory at Portland State University loaned the museum 52 meteorites in an exhibit funded by NASA. ...come see our out of this world Meteorite display prepared by the Cascadia Meteorite Laboratory of Portland State University. This display is full of amazing facts and specimens. There are several great pieces of space matter on display, including iron and stone meteorites. You'll have a chance to touch our amazing Gibeon Meteorite from Africa (so much iron in it, it feels cold to the touch!), and learn all about these intriguing, permanent visitors from space. ...a valuable chunk from the moon, a small piece from Mars, a variety of materials believed to have come from the asteroid Vesta and an iron meteorite that landed in Siberia a few decades ago. ...and collector and dealer Edwin Thompson of Lake Oswego, who has donated samples to the lab. See the Museum as featured in SMITHSONIAN MAGAZINE ;-) !!! http://www.smithsonianmag.com/museumday/venues/Rice_Northwest_Museum_of_Rocks_and_Minerals.html See the accused: http://www.facebook.com/people/Greg-Liascos/10791671471#!/profile.php?id=10791671471sk=photos Kindest wishes Doug __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite Thief!
...and if you doubt he was after the meteorites, check out the Star Trek memo and Star Wars (Including the crater on Enceladus comparison with the Death Star) in his image gallery ... and ask yourself what fossils or minerals he would prefer ... -Original Message- From: MexicoDoug mexicod...@aim.com To: Meteorite-list Meteorite-list@meteoritecentral.com Sent: Fri, Oct 28, 2011 2:21 am Subject: [meteorite-list] Meteorite Thief! Dear List It is all a terrible mistake ... I was in my Halloween costume! Next time you're swing a metal detector against some moss in the woods, if a tree talks back, check on your pockets! http://www.nypost.com/p/news/national/oregon_museum_science_sniper_camo_EncebfiWfLCJ0t8f7QMeZL http://findarticles.com/p/news-articles/columbian-vancouver-wash/mi_8100/is_20040810/museum-displays-meteorite-samples/ai_n51293517/ Meteorite Display: In 2004 the Cascadia Meteorite Laboratory at Portland State University loaned the museum 52 meteorites in an exhibit funded by NASA. ...come see our out of this world Meteorite display prepared by the Cascadia Meteorite Laboratory of Portland State University. This display is full of amazing facts and specimens. There are several great pieces of space matter on display, including iron and stone meteorites. You'll have a chance to touch our amazing Gibeon Meteorite from Africa (so much iron in it, it feels cold to the touch!), and learn all about these intriguing, permanent visitors from space. ...a valuable chunk from the moon, a small piece from Mars, a variety of materials believed to have come from the asteroid Vesta and an iron meteorite that landed in Siberia a few decades ago. ...and collector and dealer Edwin Thompson of Lake Oswego, who has donated samples to the lab. See the Museum as featured in SMITHSONIAN MAGAZINE ;-) !!! http://www.smithsonianmag.com/museumday/venues/Rice_Northwest_Museum_of_Rocks_and_Minerals.html See the accused: http://www.facebook.com/people/Greg-Liascos/10791671471#!/profile.php?id=10791671471sk=photos Kindest wishes Doug __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fwd: The Dark Side.. Oops!
Hi Doug, Bernd all: That is an interesting word choice (I was totally ignorant of that fellow too, thanks Doug). Here's another aspect I'm wondering about Herschel's comment. I didn't catch the new moon reference from when I read it years ago, up until I read Doug's post, I had always imagined that he was describing a crescent or quarter phase. And that he was using dark side to refer to the non-illuminated part of the nearside of the moon. i.e. that he didn't see the volcano's on the daylight side of the lunar hemisphere, but could only detect the volcanoes on the non-illuminated side. I can't remember for sure if his full entry mentions how the manifestation he perceived changed as the moon became more illuminated. Could his use of dark side have meant to refer to the non-illuminated part of the nearside of the moon? Assuming that new moon was referring to 1/4 moon or less, which would display both light and darkness. I had thought that the telescopes he built and used would have been good enough in quality to have led him to realize that the moon was a sphere and that the light/dark was caused by the orientation of the sun to the moon. I can only assume that in his day nomenclature was very loose and that dark side could vary in meaning (i.e. the far side, or the nearside which is in shadow). Is this making sense, or am I up too late?? ;-) Best regards, Mark - Original Message - From: MexicoDoug mexicod...@aim.com To: Meteorite-list@meteoritecentral.com Cc: Sent: Thursday, October 27, 2011 5:27 PM Subject: [meteorite-list] Fwd: The Dark Side.. Oops! Bernd cited the great Astronomer William Herschel in 1787: April 19, 1787. I perceive three volcanoes in different places of the d a r k s i d e of the new moon. Interesting word selection! In 1780, it was said about people's continuing misconceptions regarding the lighted portions of the moon: It has often been a matter of surprise to me, when viewing the moon through a good telescope, in the company of persons not accustomed to such observations, that wilst the cavities and eminences of the moon's surface appeared to me marked out with the utmost certainty by their light and shades, my companions generally conceived it to be a plain surface of various degrees of brightness. The reason I suppose to be this; the astronomer knows from the moon's situation with respect to the sun, and even from the figure of its enlightened part, precisely in what direction the light falls on its surface, and therefore judges rightly of its hills and vallies [sic], from their different degrees of light, according to those rules which are imperceptably formed in the mind, and confirmed by long experience. But a person unacquainted with astronomy knows nothing of the direction of the sun's light on the moon, nor does he attend to the moon's globular figure, an is besides perhaps possessed with a notion of it being self-luminous; no wonder then that the same object has a very different effect on his imagination. It seems to be those rules of judging, which we begin to form in our earliest infancy, which we set aside, reestablish, alter, correct and confirm, and at length rely on with the utmost confidence, even without knowing that we do so, or that we have any such rules: It is these rules, of such infinite general use to us, that sometimes mislead us on new and extraordinary occasions, and particularly in the case before us. Ref:, Transactions APS, David Rittenhouse, of course Six month's after observing an incredible bolide and two months after discussing said bolide with Ben Franklin with whom he hatched first the specific correct cosmic origin of meteors and bolides ... which was correct. Kindest wishes Doug -Original Message- From: Bernd V. Pauli bernd.pa...@paulinet.de To: meteorite-list meteorite-list@meteoritecentral.com Sent: Thu, Oct 27, 2011 5:03 pm Subject: [meteorite-list] The Dark Side.. Oops! Phil wrote: Do people still say 'dark side of the moon' when referring to the far side of the moon? Cometary Scars on the Moon? (ST, January 1988, pp. 11-12): Certain mysterious whitish blotches on the lunar surface may be the scars of comet impacts, perhaps less than 100 million years old. Known as lunar swirls, the markings appear primarily on the Moon's f a r s i d e Although more examples of these enigmatic features exist on the Moon's f a r s i d e, only Reiner Gamma is easily available for Earth-based study. New Measures of the Moon (Sky Tel, July 1995, pp. 32-33): Zuber's team has combined Clementine's topography and gravity data to estimate the thickness of the Moon's crust, confirming earlier hints that it is thinner on the near side (60 km on average) than on the f a r s i d e (68 km). But within some impact basins the crust has thinned dramatically. It is thickest (nearly 120 km) on the f a r s i d e between the South Pole-Aitken and proposed
[meteorite-list] Meteorite Picture of the Day
NWA 6966 http://www.tucsonmeteorites.com/mpod.asp __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ad : Ordinary Chondrites for sale
Hi All I have nice Ordinary Chondrites available for sale at nice price , if interested contact me offlist. Regards Malek __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hard to Polish Meteorites - Any Ideas?
Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas?
Hi Mike, I see some meteorites that have been stabilized before cutting and or polishing. Perhaps the most common stabilizing product is Opticon. While I don't like using this for aesthetics I think that it is useful for preventing a sample from falling apart when being cut. Thanks, Peter -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Gilmer Sent: Friday, October 28, 2011 9:06 AM To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.1834 / Virus Database: 2092/4580 - Release Date: 10/28/11 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.1834 / Virus Database: 2092/4580 - Release Date: 10/28/11 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas?
Hi Mike, Perhaps the Hupé's trade secret is using diamond polishing media at a much higher/finer grit than you are using? It may be worth a try. Adam Greg, can you share your secret? Ed - Original Message - From: Michael Gilmer meteoritem...@gmail.com To: meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 9:06 AM Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hoba and Gibeon Meteorites and Roter Kamm Poster – PDF File
Roter Kamm, Hoba Meteorite, and Gibeon Meteorite Shower – Namibia National Treasures http://www.mme.gov.na/gsn/posters/geological-attractions/meteorites.pdf http://www.mme.gov.na/gsn/geological-attractions.htm Yours, Paul H. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fwd: The Dark Side.. Oops!
Hi Mark, Bernd and Listers; Yes ! The great naturalized Englishman W. Herschel obviously referred to the dark side of the moon being the side that was not illuminated facing the earth, and his word choice is perfectly accurate has nothing to do with the present confusion, but it is interesting to contemplate how the current confusion may have come about. As for Rittenhouse, first known ATMer in the USA, Chladni's inspiration, son of Matthias Rittenhouse, a second generation American born of Westphalian* German (Rittenhausen) / Dutch heritage - and the go-to guy for Ben Franklin when it came to instrument making: His scientific connection to Herschel was strong - Herschel discovered Uranus and Rittenhouse was the first in the Americas to observe it less than two years later. Back in those days, that meant you could calculate its position based on the orbital elements and were skilled with the telescope to find it. Rittenhouse pointed his telescope at where he calculates it to be and it immediately observed it. He was shortly thereafter the source in the America to the Almanacks for publication of corrected orbital elements for the newly discovered planet. On Rittenhouse and Herschel: Mr. Rittenhouse never possessed the means of acquiring such stupendous and costly telescopes, as those used by Herschel, for the purpose of exploring the heavens. But the penetrating genius of our countryman seems to have contemplated, by anticipation, the actual existence of those sublime phenomena, some of which the vastly superior instruments of the Germano-Anglican Astronomer has since manifested; when, in language apparently prophetic, but certainly dictated by the most exalted pre-conceptions of the grandeur of celestial objects which were yet undiscovered, the American Philosopher observes, as he does in his Oration,---that All yonder stars innumerable, with their dependencies, may perhaps compose but the leaf of a flower in the Creator's garden, or a single pillar in the immense building of the Divine Architect.Well might he exclaim, with rapturous ecstasy, after so beautiful a sublime reflection,---Here is ample provision made for the all-grasping mind of man! It will be evident to such as duly reflect on this subject, that those expectations which occupied the mind of Mr. Rittenhouse, so long since as the year of 1775---concerning the amazing discoveries which should, at some future period, be mad among the fixed stars, were not conjectures or vague hypotheses; but they were rational anticipations of realities, founded on the most acute observation and laborious research, as well as the profoundest philosophical judgment. From the biography of David Rittenhouse (1813); review by the second president of the USA, John Adams, sandwiched between Washington and Jefferson: Mrs. Adams reads it with great delight, and reads to me what she finds interesting, and that is, indeed, the whole book. I have not time to hear it all. *The unofficial Westphalian anthem was written by a descended relative of David Rittenhouse, so in David Rittenhouse, Germany has been very instrumental in establishing science in the United States and played a role in the complete acceptance in the USA by science of the theory that meteorites were of cosmic origin; that they were specifically small objects that were orbiting the Sun independently which occasionally crossed orbital paths with the Earth. It was the first time since Diogenes, that this was stated, although in Diogenes’ time the understanding of celestial mechanics was not yet mastered, and Rittenhouse’s conclusion was based on “rational anticipations of realities, founded on the most acute observation and laborious research, as well as the profoundest philosophical judgment”. Kindest wishes Doug -Original Message- From: Mark Bowling mina...@yahoo.com To: MexicoDoug mexicod...@aim.com; Meteorite-list Meteorite-list@meteoritecentral.com Sent: Fri, Oct 28, 2011 4:56 am Subject: Re: [meteorite-list] Fwd: The Dark Side.. Oops! Hi Doug, Bernd all: That is an interesting word choice (I was totally ignorant of that fellow too, thanks Doug). Here's another aspect I'm wondering about Herschel's comment. I didn't catch the new moon reference from when I read it years ago, up until I read Doug's post, I had always imagined that he was describing a crescent or quarter phase. And that he was using dark side to refer to the non-illuminated part of the nearside of the moon. i.e. that he didn't see the volcano's on the daylight side of the lunar hemisphere, but could only detect the volcanoes on the non-illuminated side. I can't remember for sure if his full entry mentions how the manifestation he perceived changed as the moon became more illuminated. Could his use of dark side have meant to refer to the non-illuminated part of the nearside of the moon? Assuming that new moon was referring to
[meteorite-list] Mars Odyssey THEMIS Images: October 24-28, 2011
MARS ODYSSEY THEMIS IMAGES October 24-28, 2011 o Tectonism (24 October 2011) http://themis.asu.edu/node/5743 o Crater Rim Channels (25 October 2011) http://themis.asu.edu/node/5744 o Volcanic Dike Spawns Giant Flood (26 October 2011) http://themis.asu.edu/node/5745 o Out of Round (27 October 2011) http://themis.asu.edu/node/5746 o Channel (28 October 2011) http://themis.asu.edu/node/5747 All of the THEMIS images are archived here: http://themis.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in co.oration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas?
Hi Peter, Ed, and List, I know that the Hupes have a powered lap-polisher that most likely uses a diamond grit. I need to break down and buy a lap-polisher (flat lap). But I typically don't sand enough material to warrant the expense of a flat lap. Also, I enjoy hand-sanding and find it to be a zen-like relaxation exercise when combined with the right music. :) But, every now and then I run across a meteorite that is stubborn and won't take a polish. This is to be expected from friable types likes LL6, most carbonaceous types, etc. But I know CR2 types are quite hard and robust (also most CV3), so I expected this CR2 would be easy to polish. Thus far, it has resisted my efforts to beautify it. It's taking the polish, but the detail is becoming muddy and lost. I thought it might be because I dry sand and powder from the sanding was getting embedded in the matrix. So I tried giving the slice a quick bath in alcohol, which removed most of the powder, but didn't improve the appearance. I have some 1200 and 1500 grit sandpaper, and I tried going straight to those (skipping 400-1000), but the result is the same - muddy matrix and subdued chondrules. Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - On 10/28/11, Ed Deckert edeck...@triad.rr.com wrote: Hi Mike, Perhaps the Hupé's trade secret is using diamond polishing media at a much higher/finer grit than you are using? It may be worth a try. Adam Greg, can you share your secret? Ed - Original Message - From: Michael Gilmer meteoritem...@gmail.com To: meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 9:06 AM Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Rover Opportunity Update: October 20-25, 2011
http://marsrovers.jpl.nasa.gov/mission/status.html#opportunity OPPORTUNITY UPDATE: Opportunity Continues to Drive North - sols 2751-2756, October 20-25, 2011: The seasonal plan is for Opportunity to winter over on the north end of Cape York on the rim of Endeavour crater where northern tilts are favorable for energy production. As such, the project has been driving the rover in the direction of the north end of the cape with a route along the west side that creates opportunities for science along the way. The science team is on the lookout for veins of light-toned material, putative fracture-fill. On Sol 2751 (Oct. 20, 2011), Opportunity traveled over 161 feet (49 meters) in the northeasterly direction. The three-sol plan over the weekend had Opportunity heading just west of north with almost a 197-foot (60-meter) drive. With that drive, the rover exceeded 21 miles (34 kilometers) of odometry. On Sol 2756 (Oct. 25, 2011), the rover drove over 135 feet (41 meters), first northwest then due north. The plan ahead is more driving north. As of Sol 2756 (Oct. 25, 2011), solar array energy production was 297 watt-hours with an increased atmospheric opacity (Tau) of 0.913 and a solar array dust factor of 0.510. Total odometry is 21.18 miles (34,081.11 meters, or 34.08 kilometers). __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite Thief!
Star Wars (Including the crater on Enceladus comparison with the Death Star... MIMAS. The abandoned and frozen-over Death Star is Mimas. Sterling K. Webb - - Original Message - From: MexicoDoug mexicod...@aim.com To: Meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 1:39 AM Subject: Re: [meteorite-list] Meteorite Thief! ...and if you doubt he was after the meteorites, check out the Star Trek memo and Star Wars (Including the crater on Enceladus comparison with the Death Star) in his image gallery ... and ask yourself what fossils or minerals he would prefer ... -Original Message- From: MexicoDoug mexicod...@aim.com To: Meteorite-list Meteorite-list@meteoritecentral.com Sent: Fri, Oct 28, 2011 2:21 am Subject: [meteorite-list] Meteorite Thief! Dear List It is all a terrible mistake ... I was in my Halloween costume! Next time you're swing a metal detector against some moss in the woods, if a tree talks back, check on your pockets! http://www.nypost.com/p/news/national/oregon_museum_science_sniper_camo_EncebfiWfLCJ0t8f7QMeZL http://findarticles.com/p/news-articles/columbian-vancouver-wash/mi_8100/is_20040810/museum-displays-meteorite-samples/ai_n51293517/ Meteorite Display: In 2004 the Cascadia Meteorite Laboratory at Portland State University loaned the museum 52 meteorites in an exhibit funded by NASA. ...come see our out of this world Meteorite display prepared by the Cascadia Meteorite Laboratory of Portland State University. This display is full of amazing facts and specimens. There are several great pieces of space matter on display, including iron and stone meteorites. You'll have a chance to touch our amazing Gibeon Meteorite from Africa (so much iron in it, it feels cold to the touch!), and learn all about these intriguing, permanent visitors from space. ...a valuable chunk from the moon, a small piece from Mars, a variety of materials believed to have come from the asteroid Vesta and an iron meteorite that landed in Siberia a few decades ago. ...and collector and dealer Edwin Thompson of Lake Oswego, who has donated samples to the lab. See the Museum as featured in SMITHSONIAN MAGAZINE ;-) !!! http://www.smithsonianmag.com/museumday/venues/Rice_Northwest_Museum_of_Rocks_and_Minerals.html See the accused: http://www.facebook.com/people/Greg-Liascos/10791671471#!/profile.php?id=10791671471sk=photos Kindest wishes Doug __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ad - free lunar main mass thrown in with D'Orbigny offering
Hello List members, Yesterday I listed the main mass of D'Orbigny on Ebay. After so many years of keeping this large piece intact rather than breaking it up to sell it off and based on the time value of money, I had to raise the price a bit. I am certain that all of you business people will understand this action. But I also realize that collectors do not like to see prices go up. So in an effort to keep this as a deal for anyone to consider I am including as a throw in item included for free the 243 gram main mass of the lunar breccia NWA 6570. If you open the link to the Ebay listing for the D'Or. mass you can also see pictures of this wonderful lunar meteorite. Marlin and Debbie Cilz came by the house this summer on their vacation. They were towing their travel trailer which they set up at a nearby park on the Tualatin river just a stone's throw from the house. It was a really fun visit. Debbie loves the new outdoor Mall they just finished near the house. Of course Marlin and I spent a lot of time talking meteorites. We dragged all kinds of meteorites out of the vaults and Marlin talked me into cutting a number of specimens which Patrick is now featuring on the web site and on Ebay. My favorite is the howardite NWA 6695 with it's carbonaceous inclusions as well as the gorgeous eucrite breccia NWA 6694. Marlin talked us into slicing up a 400 gram chunk of the pyroxenite NWA 6693 which turned out to be stunning! I never would have believed a stone this friable could polish up so nicely. Now I understand why Greg Hupe sliced up some of his paired mass. Laboratories all over the planet are going nuts over this enigma and finding all man ner of weird anomalies within the slices and thin sections that we have been donating for research. This has been a super fun project for me while I sit here stuck to the sofa mending from surgery. So, long story made shorter. Marlin had tried to convince me that he could make a 375 gram end piece of D'Orbigny look knock down gorgeous. It was already cut many years ago. I have never cut or broken any of the pieces of the D'Orbigny. This was all done by Dr. Gerot Kurat back between 1999 and 2001 in his effort to get samples from the absolute center of this amazing oriented mass. The owner at the time; Sergio only wanted to know what it was. I think he must have figured that it was more sellable in smaller pieces. Only a very rare few of us got to see this mass before it was chopped into fragments. You can see one of the few pictures of this amazing, oriented nose cone on the Ebay page. Well this week the end piece came back from Marlin. Words simply cannot describe how beautiful this specimen now is. The few cut specimens that I once had were horrid looking. Now I wish that I had more to send to Marlin. Marlin is a meteorite preparation magician! This makes me want to cut and polish one side of the main mass. And even though the surface on this end piece was rough cut, only .6 gram is lost from the process, unbelievable! I'll post a picture on the list but I don't know that my humble camera can do this piece justice. Sincere regards, E.T. etmeteori...@hotmail.com http://www.ebay.com/itm/200668470985?ssPageName=STRK:MESELX:IT_trksid=p3984.m1555.l2649 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite Thief!
Good to see you not MIA Sterling -- ... oops, lucky earth has only one moon and its screwed on so tight ;-) -Original Message- From: Sterling K. Webb sterling_k_w...@sbcglobal.net To: Meteorite-list Meteorite-list@meteoritecentral.com; MexicoDoug mexicod...@aim.com Sent: Fri, Oct 28, 2011 2:40 pm Subject: Re: [meteorite-list] Meteorite Thief! Star Wars (Including the crater on Enceladus comparison with the Death Star... MIMAS. The abandoned and frozen-over Death Star is Mimas. Sterling K. Webb - - Original Message - From: MexicoDoug mexicod...@aim.com To: Meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 1:39 AM Subject: Re: [meteorite-list] Meteorite Thief! ...and if you doubt he was after the meteorites, check out the Star Trek memo and Star Wars (Including the crater on Enceladus comparison with the Death Star) in his image gallery ... and ask yourself what fossils or minerals he would prefer ... -Original Message- From: MexicoDoug mexicod...@aim.com To: Meteorite-list Meteorite-list@meteoritecentral.com Sent: Fri, Oct 28, 2011 2:21 am Subject: [meteorite-list] Meteorite Thief! Dear List It is all a terrible mistake ... I was in my Halloween costume! Next time you're swing a metal detector against some moss in the woods, if a tree talks back, check on your pockets! http://www.nypost.com/p/news/national/oregon_museum_science_sniper_camo_EncebfiWfLCJ0t8f7QMeZL http://findarticles.com/p/news-articles/columbian-vancouver-wash/mi_8100/is_20040810/museum-displays-meteorite-samples/ai_n51293517/ Meteorite Display: In 2004 the Cascadia Meteorite Laboratory at Portland State University loaned the museum 52 meteorites in an exhibit funded by NASA. ...come see our out of this world Meteorite display prepared by the Cascadia Meteorite Laboratory of Portland State University. This display is full of amazing facts and specimens. There are several great pieces of space matter on display, including iron and stone meteorites. You'll have a chance to touch our amazing Gibeon Meteorite from Africa (so much iron in it, it feels cold to the touch!), and learn all about these intriguing, permanent visitors from space. ...a valuable chunk from the moon, a small piece from Mars, a variety of materials believed to have come from the asteroid Vesta and an iron meteorite that landed in Siberia a few decades ago. ...and collector and dealer Edwin Thompson of Lake Oswego, who has donated samples to the lab. See the Museum as featured in SMITHSONIAN MAGAZINE ;-) !!! http://www.smithsonianmag.com/museumday/venues/Rice_Northwest_Museum_of_Rocks_and_Minerals.html See the accused: http://www.facebook.com/people/Greg-Liascos/10791671471#!/profile.php?id=10791671471sk=photos Kindest wishes Doug __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] In Memory: Planetary Geologist Ronald Greeley
http://asunews.asu.edu/20111028_rongreeley In memory: Planetary geologist Ronald Greeley Arizona State University October 28, 2011 Ronald Greeley, a Regents' Professor of planetary geology at Arizona State University who has been involved in lunar and planetary studies since 1967 and has contributed significantly to our understanding of planetary bodies within our solar system, died Oct. 27, in Tempe. He was 72. As the son of a military serviceman, Greeley moved around a great deal as child. As a result he saw many different geological landforms and it was no surprise that when he went to college, he majored in geology. Greeley earned undergraduate and graduate degrees from Mississippi State University. After receiving his doctorate in 1966 at the University of Missouri in Rolla he worked for Standard Oil Company of California as a paleontologist. Through military duty, he was assigned to NASA's Ames Research Center in 1967 where he worked in a civilian capacity in preparation for the Apollo missions to the Moon. He stayed on at NASA to conduct research in planetary geology. I had been on sabbatical at NASA Ames Research Center working on the analysis of lunar samples, and I saw Ron and I saw potential, recalls Carleton Moore, founding director of ASU's Center for Meteorite Studies. When I got the opportunity, I hired him. Greeley began teaching at ASU in 1977 with a joint professorship in the department of geology and the Center for Meteorite Studies. He studied wind processes on Earth and other planets and conducted photogeological mapping of planets and satellites among other research projects. In 1986, Greeley left the Center for Meteorite Studies to serve as chair of the department of geology. It was exciting to have him here; he was a major step in advancing space at ASU. He was the first one that came that did missions and experiments on planetary bodies,â says Moore. He was really the first person to reach out to the other planets. And then he hired Phil Christensen. Ron Greeley was indisputably one of the founders of planetary science, and the influence he has had, both through his own work and through the students and colleagues that he guided and mentored, touches virtually all aspects of this field, says Christensen, a Regents' Professor in the School of Earth and Space Exploration in ASU's College of Liberal Arts and Sciences. Ron played a major role in my career,â says Christensen. I came to ASU specifically to work with Ron after receiving my graduate degree, and I have remained at ASU for 30 years largely because of the remarkable environment that Ron created here to foster planetary science as an extension of geology. Greeley, a pioneer in the planetary geology field, served as the director of the NASA-ASU Regional Planetary Image Facility and principal investigator of the Planetary Aeolian Laboratory at NASA-Ames Research Center. He served on and chaired many NASA and National Academy of Science panels and he was involved in nearly every major space probe mission flown in the solar system since the Apollo Moon landing. Mission projects included the Galileo mission to Jupiter, Magellan mission to Venus and Shuttle Imaging Radar orbiter around Earth. He was also part of the data analysis program for the Voyager 2 mission to Uranus and Neptune. His projects focused on the moons of these distant bodies. Passionate about Mars exploration, he has been involved with several missions to the Red Planet, including Mariner (6, 7, 9), Viking, Mars Pathfinder, Mars Global Surveyor and the Mars Exploration Rovers. He is a co-investigator for the camera system onboard the European Mars Express mission. Former students scattered throughout the universities and research institutes of this country provide testimony to his influence on planetary geology. As I began my research career, Ron reminded me of the old adage: 'A journey of 1,000 miles begins with a single step.' I am fortunate to have had Ron there walking beside me, says Robert Pappalardo, senior research scientist at NASA Jet Propulsion Lab. Greeley served as Pappalardo's advisor. After receiving his doctorate from ASU in 1994, Pappalardo worked with Greeley for one year immediately after that as a postdoc. Since about 2002, the two had worked together on the science basis for Europa mission studies. Ron was a gentleman, a statesman, a mentor, a scholar, says Pappalardo. Not a day goes by that I don't think, in some situation, 'What would Ron Greeley do?' Ron was a profoundly influential scientist whose imprint on planetary science will live on through his body of research and the many students he taught and mentored. He was a wonderful friend and colleague. We were fortunate to have known him and will miss him terribly, said Kip Hodges, founding director of the School of Earth and Space Exploration. Greeley served a year as interim director of the school before Hodges joined ASU. Ron has been a very good friend of mine
[meteorite-list] Parent bodies
Hello everyone - http://www.esa. int/esaCP/ SEMG93HURTG_ index_0.html Asteroid Lutetia: postcard from the past European Space Agency 27 October 2011 ESA's Rosetta spacecraft has revealed asteroid Lutetia to be a primitive body, left over as the planets were forming in our Solar System. Results from Rosetta's fleeting flyby also suggest that this mini-world tried to grow a metal heart. (more...) Ed __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Records of lunar impacts
Hi Berndt - Thanks for the citation. There are probably multitudes of notes on lunar impacts in old astronomical records. Perhaps some of the old works on volcanoes on the Moon may have gathered some of them together. Darryl Futrell probably would have had them all at hand. Ed __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?)
Hi Count and List, You are fortunate to work with Adam firsthand and watch him work his magic. It's no secret in the collector world that the Hupes do some top-notch preparation work for all of their specimens. When I purchase a meteorite from Adam or Greg, I know I am getting some of the best preparation available, even if the specimen is a small micro. I wouldn't expect them to divulge their trade-secrets for preparation, but I was hoping for a couple of pointers on how to polish these hard to polish types. The responses I have received in public and private have been valuable and I am very thankful for the advice. It seems part of my problem is dry sanding and part is the fact that I don't have a lap-polisher. I guess I could do some wet-sanding, using distilled water, but I don't like introducing moisture into a specimen unless it is absolutely necessary. That is why the specimens I prepare are stable and free of oxidation. The only water my specimens see is during cutting (which is unavoidable) and then they go straight into a hot waiting oven for 6-10 hours to purge all remaining water. I use distilled water during cutting. Once the pieces are dry, I don't like getting them wet again. But, I will try some wet-sanding tonight and see how it goes. Does anyone know if/where I can purchase some diamond grit sandpaper for hand-sanding? I have been using the typical carbide sandpaper from the local hardware store - 100, 200, 320, 400, 600. I purchase higher grits online because they are hard to find locally without paying an arm and leg - 800, 1000, 1200, 1500. But I don't recall seeing any sandpaper with diamond-based grit. I'd like to locate some if I can. Right now I am polishing a gorgeous IMB meteorite for another dealer. This meteorite takes a great polish, unlike the CR2 I am also preparing. I'll be busy polishing most of the night and my right-arm will be tired to the point of fatigue. I should have an incredible Hulk right arm by now. On the bright side of hand-polishing - I am learning to use my left hand/arm to good effect, once my right side tires out. LOL Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - On 10/28/11, Count Deiro countde...@earthlink.net wrote: Hi Peter, Ed, Mike and List, I have spent a few days cutting and polishing dozens of various types with Adam Hupe'. With his guidance I set up my own shop with 6 and 8 saws and table and hand mounted polishing equipment. Basically, Adam uses quality diamond blades and arbor free polishing discs. Inspection cuts and slices are made with as fine a blade as will do the material in order to keep the kerf as thin as possible and reduce loss.. and at the same time eliminate the deep saw marks left by cheaper, thicker, blades. Polishing is accomplished with diamond impregnated discs both powered and in hand held blocks. He is a virtuoso with being able to turn our nice even, polished slices by hand. But, I never saw him dry cut or polish anything. He uses distilled water. This could be the secret, because when I used the same equipment dry, I couldn't get the same results until I added water for cooling and cleaning. The water also adds a fine abrasive sedimentary element to the polishing mix that I think is overlooked in it's ability to take up minute imperfections. Because of the fine (max.018) cut of his blades, I rarely found that I had to use coarser grained material to start polishing. Oh! Yes! It's really important to dress and clear the saw blade between cuts by running it through a piece of hand held common red brick. I could get by starting with 600 grit on small samples of friable material and move right into 1000 and then go on up. Bigger, harder, meteorites, or where I may have gotten ham handed with the saw, required 300 to start. Remember these are diamond impregnated polishing discs and hand held blocks like the type used by masons to finish counter top granite and marble. They can be bought in sets on eBay. I learned from Adam how to hand hold specimens safely while cutting and polishing. We both agree that there is something to feeling the pressure through your fingers on the stone. All of this seems, I'm sure, very ordinary and it isn't rocket science, but the key info here is to use the best diamond abrasives and the smallest diameter blades... and work by hand...and use water to carry off the removed material from the surface. Dry them out in the oven and fine finish wit ultra fine jeweler's non-resin cloths. P.S. Watch out for Urelites...they eat polishing discs. Have fun, Count
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?)
Hi Mike and All, I am out in the desert SW hunting and will be flying back home tomorrow afternoon. Seems the Count has answered a majority of the polishing tips I would have provided so I won't strain my eyes tapping on this tiny phone keypad. :) One of the greatest, and not so secret 'techniques', is hiring Marlin Cilz who does beyond fantastic for meteorites too large for my saw! Have fun! Best Regards, Greg Hupe On Oct 28, 2011, at 2:55 PM, Michael Gilmer meteoritem...@gmail.com wrote: Hi Count and List, You are fortunate to work with Adam firsthand and watch him work his magic. It's no secret in the collector world that the Hupes do some top-notch preparation work for all of their specimens. When I purchase a meteorite from Adam or Greg, I know I am getting some of the best preparation available, even if the specimen is a small micro. I wouldn't expect them to divulge their trade-secrets for preparation, but I was hoping for a couple of pointers on how to polish these hard to polish types. The responses I have received in public and private have been valuable and I am very thankful for the advice. It seems part of my problem is dry sanding and part is the fact that I don't have a lap-polisher. I guess I could do some wet-sanding, using distilled water, but I don't like introducing moisture into a specimen unless it is absolutely necessary. That is why the specimens I prepare are stable and free of oxidation. The only water my specimens see is during cutting (which is unavoidable) and then they go straight into a hot waiting oven for 6-10 hours to purge all remaining water. I use distilled water during cutting. Once the pieces are dry, I don't like getting them wet again. But, I will try some wet-sanding tonight and see how it goes. Does anyone know if/where I can purchase some diamond grit sandpaper for hand-sanding? I have been using the typical carbide sandpaper from the local hardware store - 100, 200, 320, 400, 600. I purchase higher grits online because they are hard to find locally without paying an arm and leg - 800, 1000, 1200, 1500. But I don't recall seeing any sandpaper with diamond-based grit. I'd like to locate some if I can. Right now I am polishing a gorgeous IMB meteorite for another dealer. This meteorite takes a great polish, unlike the CR2 I am also preparing. I'll be busy polishing most of the night and my right-arm will be tired to the point of fatigue. I should have an incredible Hulk right arm by now. On the bright side of hand-polishing - I am learning to use my left hand/arm to good effect, once my right side tires out. LOL Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - On 10/28/11, Count Deiro countde...@earthlink.net wrote: Hi Peter, Ed, Mike and List, I have spent a few days cutting and polishing dozens of various types with Adam Hupe'. With his guidance I set up my own shop with 6 and 8 saws and table and hand mounted polishing equipment. Basically, Adam uses quality diamond blades and arbor free polishing discs. Inspection cuts and slices are made with as fine a blade as will do the material in order to keep the kerf as thin as possible and reduce loss.. and at the same time eliminate the deep saw marks left by cheaper, thicker, blades. Polishing is accomplished with diamond impregnated discs both powered and in hand held blocks. He is a virtuoso with being able to turn our nice even, polished slices by hand. But, I never saw him dry cut or polish anything. He uses distilled water. This could be the secret, because when I used the same equipment dry, I couldn't get the same results until I added water for cooling and cleaning. The water also adds a fine abrasive sedimentary element to the polishing mix that I think is overlooked in it's ability to take up minute imperfections. Because of the fine (max.018) cut of his blades, I rarely found that I had to use coarser grained material to start polishing. Oh! Yes! It's really important to dress and clear the saw blade between cuts by running it through a piece of hand held common red brick. I could get by starting with 600 grit on small samples of friable material and move right into 1000 and then go on up. Bigger, harder, meteorites, or where I may have gotten ham handed with the saw, required 300 to start. Remember these are diamond impregnated polishing discs and hand held blocks like the type used by masons to finish counter top granite and marble. They can be bought in sets on eBay. I learned from Adam how to hand hold
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?)
Hi Mike and List, Purchase the diamond polishing blocks online at: http://www.contractorsdirect.com/Tile-Tools/Polishing-Pads-Buffing-Compounds/Diamond-Hand-Pad-Polishing These are easier to use than the individual grit blocks and they are the same price. $100.00 I use a shallow plastic tray with a 1/2 inch, or so of distilled water and place the block in the bottom and move the meteorite by hand. Larger examples I hold on the bottom of the pan and move the block instead. Just enough water in the bottom to sluice off the block every few strokes. I find the argument that distilled water is bad for anything other than a pristine specimen undergoing scientific study unconvincing. I have had no incidents of accelerated deterioration, or rusting, with a specimen that has dried and stored properly. Just think how much water the stone has been subjected to in the hundreds to thousands of years prior to being found. (new falls excepted). Ambient high humidity locations subject your stones to water no matter what. I'm fortunate to live in the desert. Best regards, Count Deiro IMCA 3536 -Original Message- From: Michael Gilmer meteoritem...@gmail.com Sent: Oct 28, 2011 2:55 PM To: Count Deiro countde...@earthlink.net Cc: Ed Deckert edeck...@triad.rr.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?) Hi Count and List, You are fortunate to work with Adam firsthand and watch him work his magic. It's no secret in the collector world that the Hupes do some top-notch preparation work for all of their specimens. When I purchase a meteorite from Adam or Greg, I know I am getting some of the best preparation available, even if the specimen is a small micro. I wouldn't expect them to divulge their trade-secrets for preparation, but I was hoping for a couple of pointers on how to polish these hard to polish types. The responses I have received in public and private have been valuable and I am very thankful for the advice. It seems part of my problem is dry sanding and part is the fact that I don't have a lap-polisher. I guess I could do some wet-sanding, using distilled water, but I don't like introducing moisture into a specimen unless it is absolutely necessary. That is why the specimens I prepare are stable and free of oxidation. The only water my specimens see is during cutting (which is unavoidable) and then they go straight into a hot waiting oven for 6-10 hours to purge all remaining water. I use distilled water during cutting. Once the pieces are dry, I don't like getting them wet again. But, I will try some wet-sanding tonight and see how it goes. Does anyone know if/where I can purchase some diamond grit sandpaper for hand-sanding? I have been using the typical carbide sandpaper from the local hardware store - 100, 200, 320, 400, 600. I purchase higher grits online because they are hard to find locally without paying an arm and leg - 800, 1000, 1200, 1500. But I don't recall seeing any sandpaper with diamond-based grit. I'd like to locate some if I can. Right now I am polishing a gorgeous IMB meteorite for another dealer. This meteorite takes a great polish, unlike the CR2 I am also preparing. I'll be busy polishing most of the night and my right-arm will be tired to the point of fatigue. I should have an incredible Hulk right arm by now. On the bright side of hand-polishing - I am learning to use my left hand/arm to good effect, once my right side tires out. LOL Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - On 10/28/11, Count Deiro countde...@earthlink.net wrote: Hi Peter, Ed, Mike and List, I have spent a few days cutting and polishing dozens of various types with Adam Hupe'. With his guidance I set up my own shop with 6 and 8 saws and table and hand mounted polishing equipment. Basically, Adam uses quality diamond blades and arbor free polishing discs. Inspection cuts and slices are made with as fine a blade as will do the material in order to keep the kerf as thin as possible and reduce loss.. and at the same time eliminate the deep saw marks left by cheaper, thicker, blades. Polishing is accomplished with diamond impregnated discs both powered and in hand held blocks. He is a virtuoso with being able to turn our nice even, polished slices by hand. But, I never saw him dry cut or polish anything. He uses distilled water. This could be the secret, because when I used the same equipment dry, I couldn't get the same results until I added water for cooling and cleaning. The water also
[meteorite-list] another option,if interested
Hi again list.I hope everyone is ready for a great weekend.I also would be willing to trade for something for my 16 gram cd w/hole.Please to this email only and off-list. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Eris and Pluto: Does Size Matter?
http://www.skyandtelescope.com/news/Eris-and-Pluto-Does-Size-Matter-132755658.html Eris and Pluto: Does Size Matter? Kelly Beatty Sky Telescope October 27, 2011 It's been nearly a year since dwarf planet Eris slipped directly in front of a 17th-magnitude star in north-central Cetus, and I've been curious about the outcome ever since. This occultation, successfully recorded by observers in South America, had the potential to measure the diameter of Eris with greater accuracy than can be achieved by any other method. (Example: now near aphelion in its orbit, some 9 billion miles away, Eris covers only 1.3 pixels when viewed by the Hubble Space Telescope.) So I mentally held my breath as the observing team meticulously analyzed the occultation's results. Would Eris remain the reigning king of the Kuiper Belt, up to a third bigger than Pluto, as infrared and radio measurements had indicated? Or would it turn out to be a bit smaller than Pluto, as a quick look http://www.skyandtelescope.com/community/skyblog/newsblog/106861063.html at the event's results indicated last year? The answer, published today http://www.nature.com/nature/journal/v478/n7370/full/nature10550.html in Nature, is a statistical tie! Eris has a diameter of 1,445 miles (2,326 km), with an uncertainty of just 0.5%. Pluto, as best we can tell, has a diameter somewhere between 1,430 and 1,490 miles. (In the latter's case, occultations of stars can't reduce the uncertainty â in fact, several events have been recorded over the past two decades â because Pluto's tenuous atmosphere muddies the exact timing of when the star winks out and reappears. We won't know Pluto's girth for sure until the New Horizons spacecraft zips by in July 2015.) My hat's off to Bruno Sicardy (Paris Observatory) and his team for a masterful analysis with relatively little to work with. Despite having dozens of observing teams watching that night across South America, southern Europe, and the Canary Islands, only three actually recorded the star's disappearing act. The resulting two chords across the disk of Eris are the bare minimum needed to divine a diameter â assuming that it's got a spherical shape. One small complication arose with the images recorded by Sebastian Saravia, Alain Maury, and Caisey Harlingten using Harlingten's 20-inch (50-cm) telescope at San Pedro de Atacama, Chile. The star's disappearance just happened to come during a brief gap between successive frames, which yielded two possible timings 1.2 seconds apart. That, in turn, led to some ambiguity regarding Eris's true shape. Sicardy explains that it is either very nearly spherical (the most probable situation) â or it's a fast-spinning ellipsoid that presented a just-so orientation during the occultation, which is just too far-fetched. In any case, there's more at stake than knowing whether Eris is larger than Pluto or vice versa. Both have satellites, so their masses can be deduced - and in this category Eris wins handily http://www.skyandtelescope.com/news/7975177.html. Despite the two bodies' nearly identical sizes, they are far from twins (as the headline of this ESO press release http://www.eso.org/public/news/eso1142/ erroneously suggests). The only plausible way for Pluto and Eris to be essentially the same size but for Eris to be 27% more massive is if Eris contains substantially more rock in its interior than Pluto, explains Mike Brown http://www.mikebrownsplanets.com/2010/11/dwarf-planets-are-crazy.html (Caltech), who led the team that discovered Eris in 2005. In fact, the amount of extra rock that Eris contains is about equal to the mass of the entire asteroid belt put together. That counts as a pretty big difference. But wait - there's more! Given its 19th-magnitude brightness, the new, smaller-than-before Eris must have an incredibly reflective surface that's literally as white as snow. Astronomers already knew Eris was covered with frozen methane, but the occultation results push the reflectivity to an even greater extreme: 96%. This isn't normal! Over time an icy surface should darken either due to exposure to space radiation or to meteoritic impacts. The only logical explanation is that Eris generated a thin methane atmosphere when it last reached perihelion (back in the late 1600s). Then, as Eris edged farther outward and the feeble sunlight dimmed further, those wisps completely froze onto the surface, creating a frosty crust that's at most just a few inches thick. If there's anything left of the atmosphere, the occultation didn't detect it. Sicardy's team reports an upper limit of about 1 nanobar - one-billionth the pressure of Earth's atmosphere and about 10,000 times more tenuous than Pluto's. By the way, the occultation results touched off a testy Twitter exchange today between Brown (@plutokiller), author of How I Killed Pluto and Why It Had It Coming', and Alan Stern (@AlanStern), principal investigator of the New Horizons mission. Check it out!
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?)
Hi Mike, Trade secrets to sanding? Maybe you mean just the experience of knowing each meteorites favorite way to be sanded. It's kind of silly not to use deionized water to wet sand the specimens that you've determined look better that way unless we're talking about a stone that's never slept outside over night, if you can dry them after quickly enough. I appreciate your perfectionism of not wanting to allow water to touch your meteorites, but stony meteorites are like sponges anyway and soak up water. Dew tends to form on them inside your house if you're not careful or outside and they are porous, and once out of the oven will always be picking up water - they absolutely don't stay dry. All of the desert specimens which have been in the desert got tens, hundreds and thoudands of years have the unstoppable phenomenon of terrestrialization; that is dew cycles more than half of the nights, each night, every day of every year. The desert is especially prone to dew on meteorites, even though it is so arid it is another of those conundrums - why so much dew in the desert? Simple ... the meteorite is cold as stone in the morning and that is the time everything is the desert has most likely settled down in terms of winds which are what would normally wisk away the humid air before it cooled enough to deposit its dew. The core of the meteorite continues cooling the immediate air around the meteorite (this is infrared heating/cooling) faster than the radiative heating of the Sun can warm, so the go dew-dew on the meteorites all the time. This is accentuated by passing through the dew point of the air almost always in the desert due to the extreme day/night temperature variation, remembering even the dryest desert in the world has a lot of water still in it. The result is drplets of water all over the meteorite which collect and rust below it sometime for a long time. People in some places supposedly in the Atacama in prehistoric times used to pile up rock just to collect the water in them. Stone castle walls can have the same effect. In China, desert farming is accomplished by scattering gravel on the ground to take advantage of this and no additional irrigation is necessary in some cases. If you really are making a business of this and find yourself evaluating a capital purchase of costly equipment or holding off for the time being - and as posted want diamond sandpaper without having to buy a motor and disk or ready to use laping machine, and to do it by hand, there is no reason that you can't put nearly an equal finish on it over glass while purchasing the same polishing grit for the final step and impregnating it on some sort of shammy that you can be sure is clean of prior hard particles, exactly as you have been doing, wet or dry whichever works best for the piece. Of course 3360 rpm of a 6 diameter wheel at the edge will be traveling exactly a mile a minute worth of arm strokes. Kindest wishes Dioug -Original Message- From: Michael Gilmer meteoritem...@gmail.com To: Count Deiro countde...@earthlink.net Cc: meteorite-list meteorite-list@meteoritecentral.com Sent: Fri, Oct 28, 2011 5:55 pm Subject: Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?) Hi Count and List, You are fortunate to work with Adam firsthand and watch him work his magic. It's no secret in the collector world that the Hupes do some top-notch preparation work for all of their specimens. When I purchase a meteorite from Adam or Greg, I know I am getting some of the best preparation available, even if the specimen is a small micro. I wouldn't expect them to divulge their trade-secrets for preparation, but I was hoping for a couple of pointers on how to polish these hard to polish types. The responses I have received in public and private have been valuable and I am very thankful for the advice. It seems part of my problem is dry sanding and part is the fact that I don't have a lap-polisher. I guess I could do some wet-sanding, using distilled water, but I don't like introducing moisture into a specimen unless it is absolutely necessary. That is why the specimens I prepare are stable and free of oxidation. The only water my specimens see is during cutting (which is unavoidable) and then they go straight into a hot waiting oven for 6-10 hours to purge all remaining water. I use distilled water during cutting. Once the pieces are dry, I don't like getting them wet again. But, I will try some wet-sanding tonight and see how it goes. Does anyone know if/where I can purchase some diamond grit sandpaper for hand-sanding? I have been using the typical carbide sandpaper from the local hardware store - 100, 200, 320, 400, 600. I purchase higher grits online because they are hard to find locally without paying an arm and leg - 800, 1000, 1200, 1500. But I don't recall seeing any sandpaper with diamond-based grit. I'd like to
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?)
Also if you plan on doing thin sections do NOT use oils or polishing compounds that are oil based. D_water = good! Jim Jim Wooddell https://k7wfr.us - Original Message - From: Michael Gilmer meteoritem...@gmail.com To: Count Deiro countde...@earthlink.net Cc: meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 3:38 PM Subject: Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?) Hi Count and List, Distilled water is the best. It has no chlorine in it. Anyone cutting with tap water is introducing chlorine into their specimens and that will result in an unstable specimen and could possibly start a lawrencite disease reaction. A gallon of distilled water is less than one dollar, so I don't understand why people don't use it - unless they have a giant 16 slabbing saw which would be impractical to use distilled water. My 6-inch saw coolant tank only holds about one quart of water to the top, but I only fill it just enough to cover the bottom cutting edge of the blade. I pour more into the tank through the blade slot when needed. Anyone who uses tap water is asking for trouble later on - rusting, ugly, sick specimens and unhappy buyers. Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - On 10/28/11, Count Deiro countde...@earthlink.net wrote: Hi Mike and List, Purchase the diamond polishing blocks online at: http://www.contractorsdirect.com/Tile-Tools/Polishing-Pads-Buffing-Compounds/Diamond-Hand-Pad-Polishing These are easier to use than the individual grit blocks and they are the same price. $100.00 I use a shallow plastic tray with a 1/2 inch, or so of distilled water and place the block in the bottom and move the meteorite by hand. Larger examples I hold on the bottom of the pan and move the block instead. Just enough water in the bottom to sluice off the block every few strokes. I find the argument that distilled water is bad for anything other than a pristine specimen undergoing scientific study unconvincing. I have had no incidents of accelerated deterioration, or rusting, with a specimen that has dried and stored properly. Just think how much water the stone has been subjected to in the hundreds to thousands of years prior to being found. (new falls excepted). Ambient high humidity locations subject your stones to water no matter what. I'm fortunate to live in the desert. Best regards, Count Deiro IMCA 3536 -Original Message- From: Michael Gilmer meteoritem...@gmail.com Sent: Oct 28, 2011 2:55 PM To: Count Deiro countde...@earthlink.net Cc: Ed Deckert edeck...@triad.rr.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas? (diamond grit sandpaper?) Hi Count and List, You are fortunate to work with Adam firsthand and watch him work his magic. It's no secret in the collector world that the Hupes do some top-notch preparation work for all of their specimens. When I purchase a meteorite from Adam or Greg, I know I am getting some of the best preparation available, even if the specimen is a small micro. I wouldn't expect them to divulge their trade-secrets for preparation, but I was hoping for a couple of pointers on how to polish these hard to polish types. The responses I have received in public and private have been valuable and I am very thankful for the advice. It seems part of my problem is dry sanding and part is the fact that I don't have a lap-polisher. I guess I could do some wet-sanding, using distilled water, but I don't like introducing moisture into a specimen unless it is absolutely necessary. That is why the specimens I prepare are stable and free of oxidation. The only water my specimens see is during cutting (which is unavoidable) and then they go straight into a hot waiting oven for 6-10 hours to purge all remaining water. I use distilled water during cutting. Once the pieces are dry, I don't like getting them wet again. But, I will try some wet-sanding tonight and see how it goes. Does anyone know if/where I can purchase some diamond grit sandpaper for hand-sanding? I have been using the typical carbide sandpaper from the local hardware store - 100, 200, 320, 400, 600. I purchase higher grits online because they are hard to find locally without paying an arm and leg - 800, 1000, 1200, 1500. But I don't recall seeing any sandpaper with diamond-based grit. I'd like to locate some if I can. Right now I am polishing a gorgeous IMB meteorite for another dealer. This meteorite takes a great polish, unlike the CR2 I am also preparing. I'll be busy
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas?
G'Day Mike and List It sounds like you've got a dilemma. I'd like to go into it, but I feel that those that have posted have given you good advice. One additional piece of information, who I've not been able to equal is Tom Phillips' ability to create a mirror surface on a meteorite. I kid you not, what I have in my possession would blow you away. It's a real shame that he doesn't post to the Met List anymore, but he has his reasons. I suppose it's similar to Michael Johnson's Picture of the Day, I respect Tom in all aspects. He has guided me, been by my side, he recommended me for the IMCA. Yes, I know I shouldn't be mentioning the IMCA here on the Met List but he deserves a lot more than what people give him. I will gladly put you in contact with him if you're not able to make correspondence. He definitely is impeccable in all his work. Cheers John Cabassi IMCA 2125 -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Gilmer Sent: Friday, October 28, 2011 6:06 AM To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hard to Polish Meteorites - Any Ideas?
Hi Mike, Speaking of fine polish, have you contacted Marcin Cimala of Polandmet for his suggestions? His polish is absolute glass and class. Bob On Fri, Oct 28, 2011 at 9:00 PM, John.L.Cabassi j...@cabassi.net wrote: G'Day Mike and List It sounds like you've got a dilemma. I'd like to go into it, but I feel that those that have posted have given you good advice. One additional piece of information, who I've not been able to equal is Tom Phillips' ability to create a mirror surface on a meteorite. I kid you not, what I have in my possession would blow you away. It's a real shame that he doesn't post to the Met List anymore, but he has his reasons. I suppose it's similar to Michael Johnson's Picture of the Day, I respect Tom in all aspects. He has guided me, been by my side, he recommended me for the IMCA. Yes, I know I shouldn't be mentioning the IMCA here on the Met List but he deserves a lot more than what people give him. I will gladly put you in contact with him if you're not able to make correspondence. He definitely is impeccable in all his work. Cheers John Cabassi IMCA 2125 -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Gilmer Sent: Friday, October 28, 2011 6:06 AM To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? Hi List, Some meteorites are hard to polish or just won't take a proper polish. Allende is one example that comes to mind readily. I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. It has a wicked glossy polish on it that accentuates the chondrules. I'm working on some CR2 slices that need polishing and they won't take a decent polish. I can get the saw marks out, but beyond that I can't get a polish to take. The more I try, it just muddies up the matrix and subdues the features. The metal fleck and rings around the armored chondrules come out nicely, but the rest of the specimen becomes muddy and the chondrules fade into the matrix. What am I doing wrong? This particular CR2 is similar to NWA 801, but a little more weathered. Could that have something to do with it? Do the Hupes have some magic trade-secret technique? Or am I overlooking something obvious? I started out with 320 grit and then progressed to 400, 600, and 800 grit - hand sanding, dry, on wet/dry sandpaper. Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone - __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Test
Test only. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Records of lunar impacts
I seem to remember a post with a link to a video featuring the moon with a meteor strike showing as a flash lasting about 1/2 second. Could this be the elusive volcano? Pete IMCA 1733 Original Message Subject: [meteorite-list] Records of lunar impacts From: E.P. Grondine epgrond...@yahoo.com Date: Fri, October 28, 2011 4:43 pm To: meteorite-list@meteoritecentral.com Hi Berndt - Thanks for the citation. There are probably multitudes of notes on lunar impacts in old astronomical records. Perhaps some of the old works on volcanoes on the Moon may have gathered some of them together. Darryl Futrell probably would have had them all at hand. Ed __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Share pictures of 220 kg oriented Sikhote-Alin
Just like to share pictures of 220 kg oriented Sikhote-Alin meteorite. If some one is interested please mail to my post. Pics available here: http://sikhote-alin-meteorite-220kg.blogspot.com/ Best regards Ivan __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Records of lunar impacts
Pete, List, Brief small lunar impact video. a 4 tons of TNT sized strike that left a 14 meter crater: http://science.nasa.gov/science-news/science-at-nasa/2006/13jun_lunarsporadic/ Bigger impacts have been SEEN but not filmed. This is a hard phenomenon to observe and record. Here's a list of images, videos, and advice on how to observe it: http://gvarros.com/lunarimpacts.htm Large planes (like airliners) fall out of the sky and crash with some frequency but there are almost no videos of it happening. Sterling K. Webb --- - Original Message - From: pshu...@messengersfromthecosmos.com To: The List meteorite-list@meteoritecentral.com Sent: Friday, October 28, 2011 11:02 PM Subject: Re: [meteorite-list] Records of lunar impacts I seem to remember a post with a link to a video featuring the moon with a meteor strike showing as a flash lasting about 1/2 second. Could this be the elusive volcano? Pete IMCA 1733 Original Message Subject: [meteorite-list] Records of lunar impacts From: E.P. Grondine epgrond...@yahoo.com Date: Fri, October 28, 2011 4:43 pm To: meteorite-list@meteoritecentral.com Hi Berndt - Thanks for the citation. There are probably multitudes of notes on lunar impacts in old astronomical records. Perhaps some of the old works on volcanoes on the Moon may have gathered some of them together. Darryl Futrell probably would have had them all at hand. Ed __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Weston Meteorite and Benjamin Silliman Revisted: Scholarly Reviews of A professor, a president, and a meteor
If you would like to learn about some new scholarly reviews of Cathryn Prince's book, A professor, a president, and a meteor, click on one of the links below to reach the Meteorite Manuscripts blog. Thanks! Mark Mark Grossman Meteorite Manuscripts http://meteoritemanuscripts.blogspot.com http://twitter.com/MetManuscripts http://www.facebook.com/#!/pages/Meteorite-Manuscripts/152949358073543?sk=wall __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
