Re: [meteorite-list] meteorite coins and other ridiculous wastes of time
Hi Thaddeus, what are your suggestions to improve those circumstances? For me personally, it would be interesting, how many of the list members opine, that meteorites shouldnt be objects of commerce. Can somebody set up a poll? Martin Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Thaddeus Besedin Gesendet: Donnerstag, 29. März 2007 07:38 An: meteorite-list@meteoritecentral.com Betreff: [meteorite-list] meteorite coins and other ridiculous wastes of time List, Do we need Franklin Mint-esque coins to hype the insuperable wonder of actual meteoritic material free of made-to-order home shopping network (no trademark) gimmick? These rank amongst the greatest achievements of Mike Farmer, capitalist of little self-control and imagination. Give us rocks, and that's it: you sell rocks. Collectors can become humorously obsessive when all reference to our target interests are accepted. Coins will distract from oxidation, reduction, recrystallization, and chondrules. -Thaddeus Besedin It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] blue crystals as desiccants
Here in Germany the dessicants with the cobalt-indicator is more and more replaced by the orange dessicants, as the cobalt-stuff was rated in 2000 to be weakly carcinogenic. I read, that the orange stuff uses that as indicator: http://en.wikipedia.org/wiki/Phenolphthalein Martin __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] New Meteorite Crater Found in California
1. Giant Meteorite Hit Ancient California, Crater Study Suggests by John Roach, National Geographic News, March 27, 2007 http://news.nationalgeographic.com/news/2007/03/070327-california-crater.html The proposed impact may have created the giant 3.4-mile-wide (5.5-kilometer-wide) craterlike formation that the team found buried 4,900 to 5,250 feet (1,490 to 1,600 meters) below sea level west of Stockton, California. they think it is between 37 to 49 million years old. 2. Oil exploration in California Reveals Giant Impact Crater CCN Magazine, CA - Mar 22, 2007 http://www.ccnmag.com/news.php?id=4947 3. Crater' spied under California, BBC News, UK, March 16, 2007 http://news.bbc.co.uk/2/hi/science/nature/6458841.stm Bets Regards, Paul Baton Rouge, LA Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains. http://farechase.yahoo.com/promo-generic-14795097 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Impact Origin of Silverpit Structure Disputed
The controversy over the origin of the Silverpit Structure continues. UK impact crater debate heats up by Jonathan Fildes BBC News, March 30, 2007 http://news.bbc.co.uk/2/hi/science/nature/6503543.stm Geology of Silverpit Structure Area http://news.bbc.co.uk/2/hi/science/nature/6503543.stm#map Alternative Theory for Origin of Silverpit Structure http://news.bbc.co.uk/2/shared/spl/hi/pop_ups/07/sci_nat_enl_1175254561/html/1.stm Best Regards, Paul Baton Rouge, LA Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] How to go from the Tucson show to the Ensisheim show
Note step 40. :-) http://maps.google.com/maps?f=dhl=ensaddr=new+york,+nydaddr=Dublin,+Irelandsll=57.984808,-55.019531sspn=72.354033,164.53125layer=ie=UTF8om=1z=4ll=48.166085,-36.5625spn=43.171238,82.265625 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] blue crystals as desiccants
Hi Zelimir and list, Many thanks for your well written information on desiccants and taking the time to share with all of us. While I didn't know the reasons chemically behind the crystals, I did know from experience that the crystals weren't detrimental from using them with specimens I keep. It is great to have the chemical understanding now and I am sure I speak for others who very much appreciate your taking the time to write this to the list!!! All my best to you! --AL Mitterling Zelimir Gabelica wrote: Hi Al, list, The blue crystals are indeed a cobalt chloride. Most of the current colored (blue) dessicants actually consist in impregnating silica gel beads (balls etc), by dehydrated cobalt chloride, that is blue. For those who worry about the chemistry involved, let me ensure you that (in principle) that compound, as well as silica gel, shouldn't behave harmful to meteorites, provided the dessicant is not in direct contact with the meteorite surface (what Al observed is therefore correct). For those who wish to know more about what is going on, on a molecular level, the old popular chemistry stated that anhydrous Co(II) chloride (CoCl2) was blue, while once hydrated with 6 water molecules, it gets a red-pink color, thus becoming CoCl2.6H2O. This is actually not so. The real reaction is as follows: In a fully dry medium, two (Co(H2O)6)Cl2 (pink) molecules would dehydrate, thus loose all their 12 H2O molecules, and eventually yield anhydrous Co(CoCl4). You can note that the coordination of Co(II) ion (or Co2+ ion) had changed. It was initially octahedral (6 water molecules surrounding a Co2+ ion - also noted Co(II)) and it became, upon dehydration, tetrahedrally coordinated, thus consisting in an anion CoCl4 2-, neutralized by a Co 2+ cation. In other words, two molecules of hexaaquacobalt(II) chloride transform, upon loosing their 12 water molecules, into anhydrous cobalt(II)tetrachlorocobaltate(II). The change of coordination is basically responsible for the color change. Sorry for those who are not familiar with (or hate) chemical formulas but the message is that as soon as the dessicant is blue, the chloride anions remain inside the coordination sphere of the cobalt complex as ligands and (probably) won't diffuse towards the meteorite, even if the dessicant is in contact. Upon rehydration (perfectly reversible), it is the water that migrates inside the coordination sphere of Co(II) (that now gets an octahedral symmetry) and the chlorides are now out of the coordination sphere, (thus perhaps more prompt to react with the meteorite if in contact, although probably not, because the whole salt, so neutralized, is still very stable). As a conclusion and whatever the chemistry be, both complexes are quite stable and I don't believe chloride ions will ever diffuse towards the meteorite surface if the dessicant is adequately separated from it (I mean water, that readily diffuses through the whole system, won't bring along the chloride ions during its migration). Also, bear in mind that the cobalt salt is only a color indicator of the ambient humidity (moisture). Red means there is water around and blue meaning the environment is really anhydrous. The silica gel is the real dessicant (it absorbs both the cobalt salt and water into its porous texture). In other words, the color of the impregnated Co salt indicates whether the silica gel is still empty (of water) and thus a good drying agent (blue) or it is saturated with water (pink), then meaning that water is all around and thus also in contact with the meteorite. Hoping this can help. If collectors use other type of colors (or dyes), it is better to check the chemical properties of the dye first. Have fun, Zelimir __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (AD) sale or trade
Hi list.Since I have traded for another piece od nwa 1685,I am willing to sell or trade my 198 gram individualAt selling,it will be $2.50 per gram plus shipping.Or thru trade pieces or a very nice piece of gao.Let me know off list. steve Steve R.Arnold,chicago,Ill,Usa!! Collecting Meteorites since 06/19/1999!! www.chicagometeorites.net Ebay I.D. Illinoismeteorites Food fight? Enjoy some healthy debate in the Yahoo! Answers Food Drink QA. http://answers.yahoo.com/dir/?link=listsid=396545367 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] blue crystals as desiccants
Hi, one basic question: which is the best way to bake-out the desiccant when it's exhausted? Is the procedure the same for the blue crystals and the impregnating silica gel beads? Thanks, Giovanni -- Passa a Infostrada. ADSL e Telefono senza limiti e senza canone Telecom http://click.libero.it/infostrada __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] meteorite coins and other ridiculous wastes of time
This is one time I am very happy for the email block capability in my Yahoo account. I jave just added one more person to it. --- Thaddeus Besedin [EMAIL PROTECTED] wrote: List, Do we need Franklin Mint-esque coins to hype the insuperable wonder of actual meteoritic material free of made-to-order home shopping network (no trademark) gimmick? These rank amongst the greatest achievements of Mike Farmer, capitalist of little self-control and imagination. Give us rocks, and that's it: you sell rocks. Collectors can become humorously obsessive when all reference to our target interests are accepted. Coins will distract from oxidation, reduction, recrystallization, and chondrules. -Thaddeus Besedin - It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Amateur Astronomers, Professionals Combine Observations to Produce Detailed Picture of Double Asteroid
3/29/07 - File #17511 Contact: Robert Sanders (510) 643-6998 [EMAIL PROTECTED] Amateur astronomers, professionals combine observations to produce detailed picture of double asteroid FOR IMMEDIATE RELEASE The full story is online at http://www.berkeley.edu/news/media/releases/2007/03/29_antiope.shtml. See images at http://www.eso.org/outreach/press-rel/pr-2007/pr-18-07.html Berkeley -- Roping together observations from the world's largest telescopes as well as the small instrument of a local backyard amateur, astronomers have assembled the most complete picture yet of a pair of asteroids whirling around one another in a perpetual pas de deux. In a paper to be published in the April 2007 issue of the journal Icarus, a team of University of California, Berkeley, and Paris Observatory astronomers depict the asteroid 90 Antiope as two slightly egg-shaped rubble piles locked in orbit, like two twirling dancers facing one another with linked arms. This new view of Antiope is the culmination of research that started in 2003 and that eventually included data supplied by both professional and amateur astronomers from around the globe. Before the year 2000, Antiope was just another main-belt asteroid, one of millions between the orbits of Mars and Jupiter. But that year, it was resolved into a doublet, thanks to sharper pictures obtained with adaptive optics (AO) on the largest ground-based telescope, the 10-meter Keck II telescope in Hawaii. Yet, even with AO, these two asteroids were too small for astronomers to discern their shape or to see more than two bright blobs revolving around their center of mass. Two years ago, with improved images from the European Southern Observatory's 8-meter Very Large Telescope (VLT) in Chile and Keck II, University of California, Berkeley astronomer Franck Marchis and colleagues in France were able to determine the orbits of the two asteroids, each of them about 86 kilometers in diameter and separated by about 171 kilometers. But uncertainties remained, and in 2005 the team invited observers around the world to turn their telescopes on the asteroid pair during a time when they predicted a mutual eclipse or occultation would cause a drop in brightness. In an eclipse, one of the pair casts a shadow over the other; in an occultation, one passes in front of, and completely blocks light from, the other. Sure enough, at the appointed time on May 31, 2005, one of the asteroids eclipsed the other, and team member Tadeusz Michalowski e- mailed Marchis and their colleagues from South Africa to confirm the eclipse. Michalowski, an astronomer at Adam Michiewicz University's Astronomical Observatory in Poznan, Poland, recorded the dip in Antiope's brightness from the South African Astronomical Observatory. Over the next six months, at Marchis' invitation, amateurs and professionals from as far afield as Brazil, France, Reunion Island in the Indian Ocean and Grass Valley, Calif., observed repeated occultations, as well as shadows passing over one of the pair. This is the first publication I've had in a professional journal, and I'm really happy about it, said amateur astronomer Peter Dunckel, 75, a retired paper company executive who observes from the backyard of his vacation home in Grass Valley. What is really a thrill is to have my little 7-inch telescope along with an 8- meter telescope on the same paper; it is unbelievable. Dunckel observed the binary pair for 35 hours over a period of six weeks, recording Antiope's brightness every minute with a CCD camera attached to his Maksutov Newtonian reflector telescope. Amateurs can be used for professional studies, compensating for the small size of their telescopes by the large numbers of observations and the frequency of observations they can do, Marchis said. You can time the orbits more precisely when a mutual event happens, which allows you to extract also the size, shape and surface detail of each component, and also what it's made of. The asteroid pair is itself the remnant of an ancient asteroid, dubbed Themis, which astronomers estimate was destroyed around 2.5 million years ago, probably hit by another asteroid. The rubble spread out from the point of impact but continued to follow approximately the same orbit around the sun in the outer part of the main asteroid belt. Themis was a carbonaceous chondrite left over from the formation of the solar system 2.5 billion years ago. Evidently, either another asteroid hit Antiope again to split it in two, or two of the Themis pieces remained bound to one another after the initial break up, possibly even remaining attached. However the doublet arose, computer simulations by another group suggest that the spinning, elongated rubble pile would have separated into two egg-shaped rubble piles, each the shape of a Roche ellipsoid, the theoretical shape predicted for
[meteorite-list] Mars Odyssey THEMIS Images: March 26-30, 2007
MARS ODYSSEY THEMIS IMAGES March 26-30, 2007 o Russell Crater (Released 26 March 2007) http://themis.asu.edu/zoom-20070326a o THEMIS ART #76 (Released 27 March 2007) http://themis.asu.edu/zoom-20070327a o THEMIS ART #77 (Released 28 March 2007) http://themis.asu.edu/zoom-20070328a o THEMIS ART #78 (Released 29 March 2007) http://themis.asu.edu/zoom-20070329a o THEMIS ART #79 (Released 30 March 2007) http://themis.asu.edu/zoom-20070330a 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. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Impact Origin of Silverpit Structure Disputed
UK impact crater debate heats up by Jonathan Fildes BBC News, March 30, 2007 http://news.bbc.co.uk/2/hi/science/nature/6503543.stm UK impact crater debate heats up By Jonathan Fildes BBC News March 30, 2007 A deep scar under the North Sea thought to be the UK's only impact crater is no such thing, claims a leading geologist. Professor John Underhill, from the University of Edinburgh, says the Silverpit structure, as it is known, has a far more mundane explanation. Detailed surveys reveal nine similar vast chasms in the area, he says. This suggests it was part of a more widespread process, probably the movement of salt rocks at depth, not a one-off meteorite impact, he believes. I feel like I'm spoiling a party, said Professor Underhill. It's a less glamorous explanation, but that's what the scientific data is saying. Professor Underhill first put forward his theory in 2004 and has spent the last three years collecting evidence to back it up. I just felt that there was a bit more to the story than met the eye John Underhill However, the group that discovered the structure in 2002 stands by its original theory of a cataclysmic asteroid or comet impact about 60-65 million years ago. I can't understand why John keeps banging away at an alternative model, said team member Dr Simon Stewart, a geologist with BP. The crater interpretation of Silverpit still stands, in my opinion. Regional view The 3km-wide (1.8 miles) wide bowl was discovered in 2002 by Dr Stewart and his colleague Phil Allen, of geoscience firm PGL, about 130km (80 miles) east of the Yorkshire coast. The structure, which comprises concentric, closely-spaced rings, is punched through a band of chalk. Today, it covered by shales and sandstones almost one kilometre deep. It can only be seen on seismic data, collected by petroleum companies hunting for new oil and gas fields. Silverpit is 130km east of Yorkshire (BBC) Two studies by Dr Stewart and Mr Allen, the latest of which mapped the structure in 3D, concluded that it was the result of a space impact. But Professor Underhill has never been convinced. I just felt that there was a bit more to the story than met the eye, he told BBC News. To establish whether the feature was unique, he examined a 3,750-sq-km-area around the structure. I decided to throw a more regional view at it, and ended up finding a whole load of these features with very similar cross sections, he said. Along with a colleague, Dr Zana Conway, he has identified at least nine major bowl-shaped depressions, known as synclines, and over 15 subsidiary structures including Silverpit itself. He says that more have also been identified elsewhere. Salt push He says that the swarm of structures is the result of movement of a thick layer of salt of Upper Permian (248-256 million years ago) age that lies below the whole area. The salt is highly mobile and flows between areas of high and low pressure. In some regions, huge blisters of salt force the overlying rocks up into domes, known as anticlines; elsewhere the salt flows entirely away and the overlying layers buckle and subside. This is what caused the crater-like Silverpit structure, argues Professor Underhill. The key observation is that every single syncline is exactly coincident with where the salt has thinned or withdrawn, he said. There is an absolute one-to-one correlation between these two levels. In addition, Dr Conway has examined the coastlines of Denmark and the east of England for evidence of tsunami deposits of the right age. If a space object did crash into the shallow North Sea, the argument goes, it would have caused great waves to dash the coastlines of surrounding countries. In addition, it would have left a layer with high levels of an element known as iridium in the rocks. There is a lack of any independent evidence for a meteorite impact for the time that they say in the place that they advocate, said Professor Underhill. Missing links Dr Stewart is un-moved. He points to a 300m-high central peak, or nipple, in the centre of the inner bowl, typical of impact craters. In addition, he argues the seismic surveys show areas of undeformed rock underlying the crater. He explained it was like finding a hole in the roof of your house at the same time as you were digging in the basement. With only this information, one might conclude your roof collapsed because of subsidence into the hole you made in the basement, he says. But if you then point out that the first floor is intact, undeformed, we would conclude the roof hole was unrelated to the basement hole and indeed was most likely to be caused by something dropping through it. Professor Underhill is unconcerned by this argument. He says that different rocks are mechanically stronger than others and will react in different ways when the salt withdraws. Conclusive proof The debate has drawn in other researchers from the geological community. Impact expert Dr Gareth Collins
[meteorite-list] New Green Comet Set for April Show (C/2007 E2 Lovejoy)
http://www.space.com/spacewatch/070330_ns_comet_lovejoy.html New Green Comet Set for April Show By Joe Rao space.com 30 March 2007 A new comet has recently been discovered, and like the brilliant Comet McNaught from earlier this year, this latest discovery belongs to an Australian: Comet Lovejoy (C/2007 E2). On March 15th, Terry Lovejoy of Thornlands, Queensland, Australia, discovered a 9th-magnitude comet in the southern constellation Indus the Indian. In reporting the find to the Central Bureau for Astronomical Telegrams (CBAT), in Cambridge, Massachusetts, Lovejoy described the comet as having a coma that appeared distinctly green in color, with a slight extension to the southwest. Remarkably, Lovejoy made the discovery not with a telescope but using an off-the-shelf digital camera! In fact, it appears to be the very first case of the discovery of a comet discovered in this manner. Lovejoy was using a Canon 350D with a zoom lens set to 200-mm focal length at f/2.8. Lovejoy spotted the object near the frame edge in 16 exposures of 90 seconds each. The images were obtained during a comet-hunting survey that Lovejoy has been conducting for more than two years. The first independent confirmation was obtained by John Drummond (Possum Observatory, Gisborne, New Zealand) on March 16. He used a 41-cm reflector and visually estimated the magnitude as 9.5 - about 15 times dimmer than the faintest sky objects that can be seen without optical aid. Drummond estimated the coma diameter as 2.6 arc minutes (roughly equal to about 1/12 that of the apparent width of the Moon). The green comet is too dim to see with the naked eye, but it's a nice target for backyard telescopes. The first official orbit was calculated by Brian G. Marsden of the CBAT on March 19. He took 36 precise positions spanning a three day interval and determined the comet's perihelion date (when it will sweep closest to the Sun - a distance of 101.3 million mi/ 163 million km.) as March 27. The comet's distinctive greenish hue seems to suggest that it is rich in cyanogens and diatomic carbon. Unlike Comet McNaught which took a southerly route after passing the Sun, Comet Lovejoy will be progressing north during April and will soon become favorably placed for observation for observers in the Northern Hemisphere. Also unlike Comet McNaught, Comet Lovejoy will (unfortunately) not become a naked-eye object; it probably will get no brighter than magnitude +7.5. That's still about two and a half times fainter than the faintest naked-eye star. But it still should continue to be an interesting object to follow with binoculars and small telescopes as it moves north during April. For most northern observers, it will not be until the second week of April that Comet Lovejoy will emerge from out of the dawn twilight and be positioned low in the southeast sky. It will be located between the constellations of Capricornus the Sea Goat and Sagittarius the Archer [sky map http://www.space.com/php/multimedia/imagedisplay/img_display.php?pic=070330_530amapril15_02.jpgcap=The+sky+from+mid-northern+latitudes+at+5%3A30+a.m.+on+April+15%2C+2007.]. During April 20-25, the comet will appear to cross the Milky Way while passing through the southern half of Aquila the Eagle. This is also about the time when it will be passing closest to Earth (41 million mi/66 million km, Apr. 24-26) and should appear at its brightest. Toward month's end, it will glide between Lyra the Lyre and Hercules, and appearing to pass almost directly overhead at around 3 a.m. local daylight time. On Comets ml - an Internet forum dedicated to the discussion of comets, Terry Lovejoy posted his thoughts after he made his discovery: After a very intense search effort in 2006 without success, I had wound back my efforts in 2007 (partly because of fatigue!). March 15 was only the second time this year I had done any searches in the morning sky. All told I estimate I have examined about 1000 image fields since late 2004, which would equate to about 1000 hours. 2007 has been a good year with two lifetime astronomy goals finally achieved. The first goal was to see a daylight comet (McNaught) and the second to discover a comet. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Cosby's Creek, Tennessee
Hi Robin and List, Here is some interesting info from the Vagn Buchwald trilogy. Happy reading and enjoy! For me, if I were you, the most interesting comment by Buchwald would be this one: It probably burst in the atmosphere and produced a limited shower centered around Cosby's Creek So, maybe there is still something out there waiting for you to go for it! Best wishes, Bernd BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 2, pp. 500-502, excerpts: Cosby's Creek, Tennessee, U.S.A. / 35° 47' N, 83° 15' W; 450 m / Coarse octahedrite, Og. Bandwidth 2.5±0.8 mm / Neumann bands / Group IAB-MG / 6.67% Ni / 0.53% Co / 0.29% P 91.5 ppm Ga, 431 ppm Ge, 2.9 ppm Ir The greater part was forged, but about 100 kg fragments have survived in collections. History: A fragment of a larger mass, found about 1837 near Cosby's Creek in Cocke County, was described by Troost (1840) with an analysis. Further information was provided by Shepard (1842; 1847), and by Huntington (1888; 1894) who discussed the identity of a number of similar irons (Sevier County, Greenbrier County, Jenny's Creek, Wilson County, Waldron's Ridge, Smithville and Cosby's Creek), reportedly coming from different places in the Appalachian Mountains. Several of Huntington's suite of irons certainly do not belong with Cosby's Creek, such as Greenbrier County, Jenny's Creek, Waldron Ridge and Smithville. Black Mountain is probably a transported fragment of Duel Hill (1873), since the detailed structures, the general locality of find and the state of terrestrial corrosion are almost identical. According to Shepard the greatest mass of 700-800 pounds weight (another less reliable estimate: 2,000 lbs) was found on an offset of an eminence about 30 m above the bed of Cosby's Creek. It was an oblong, square block from which it was easy to detach fragments because of the violent, terrestrial corrosion that had taken place. The mass was placed upon what is here called a log-heap, where after roasting for some time, it developed certain natural joints, of which advantage was taken with cold chisels and spikes, for its separation into fragments. These were put into a mountain wagon, and transported 30 or 40 miles to Lary's forge in Sevier County and Peter Brown's forge in Greene County. The greater part was wrought into gun scalps (in Tennessee the forged iron bar, before being bored for a gun barrel, is called a gun-scalp - Huntington 1894), horseshoe nails and other articles of common use, but some remnants of the mass fell into the hands of Dr. Troost. Another mass weighing 112 pounds, which was found in the immediate vicinity of the larger mass by a mountaineer, apparently escaped the fate of the larger. It became known under the synonym Sevier County, was divided and went through several hands (Troost, Shepard, Heuland), before it ended up in various collections, the largest part presumably in the British Museum. Many descriptions were given in the nineteenth century, of which, in addition to the above mentioned, those of Reichenbach (1862a), Rose (1864a) and Smith (1876a) are noteworthy. Bergemann (1857) and Cohen (1900b) presented the first reliable analyses, while Farrington (1915) reviewed the literature. Description: Most specimens in collections are heavily corroded fragments with weights from a few grams to a few kilograms. The original surface has lost its regmaglypts and atmospheric sculpturing due to terrestrial weathering and is now covered with 1-3 mm thick adhering crusts. Most specimens appear to be broken fragments; concave smooth impressions of now lost troilite-graphite nodules, 2-5 cm in size, are often found in the fracture surfaces. Some specimens have a crust that indicates slight, artificial reheating, since the color and morphology resemble scale on mill products. Such specimens are probably surviving fragments of the larger mass that was heated in order to split it more easily. Undamaged specimens show a coarse Widmanstätten pattern with a bandwidth of 2.50±0.80 mm. The thinner lamellae are invariably associated with cohenite-rich patches. In the cohenite-poor regions grain growth has often wiped out the Widmanstätten array and created almost equiaxial ferrite grains 3-20 mm in diameter. Neuman bands are common. Cohenite is the dominant mineral in most sections. It occurs typically as 3 x 0.5 mm oblong, rounded, monocrystalline fingers and is occasionally clustered sufficiently to create rosette-like aggregates. Graphite is common, probably always associated with troilite. Smaller graphite and troilite nodules are frequently met with. Some appear to have been parallel, elongated cones of finger size that were easily detached from the matrix. Daubreelite frequently occupies 5-10% of the troilite nodules. Schreibersite is present as 10 x 1 mm skeleton crystals with cohenite rim zones. It further occurs as grain boundary precipitates and as inclusions in cohenite. Phosphides
Re: [meteorite-list] How to go from the Tucson show to the Ensisheim show
Step 23 is pretty much a killer. - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 12:15 PM Subject: [meteorite-list] How to go from the Tucson show to the Ensisheim show Note step 40. :-) http://maps.google.com/maps?f=dhl=ensaddr=new+york,+nydaddr=Dublin,+Irelandsll=57.984808,-55.019531sspn=72.354033,164.53125layer=ie=UTF8om=1z=4ll=48.166085,-36.5625spn=43.171238,82.265625 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Strewn fields?..Re: Mars Odyssey THEMIS Images: March 26-30, 2007
Hi, One of the themis images seems to show some great strewn field craters... unless they are made from debris from a nearby larger impact! Take a look here. http://themis.asu.edu/fullimages/20070329a Ron Baalke wrote: MARS ODYSSEY THEMIS IMAGES March 26-30, 2007 o Russell Crater (Released 26 March 2007) http://themis.asu.edu/zoom-20070326a o THEMIS ART #76 (Released 27 March 2007) http://themis.asu.edu/zoom-20070327a o THEMIS ART #77 (Released 28 March 2007) http://themis.asu.edu/zoom-20070328a o THEMIS ART #78 (Released 29 March 2007) http://themis.asu.edu/zoom-20070329a o THEMIS ART #79 (Released 30 March 2007) http://themis.asu.edu/zoom-20070330a 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. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] How to go from the Tucson show to the Ensisheim show
Shouldent they let you use some alternate form of transportation to get through #23? A rowboat maybe? At least a wind surfer --- Darren Garrison [EMAIL PROTECTED] wrote: Note step 40. :-) http://maps.google.com/maps?f=dhl=ensaddr=new+york,+nydaddr=Dublin,+Irelandsll=57.984808,-55.019531sspn=72.354033,164.53125layer=ie=UTF8om=1z=4ll=48.166085,-36.5625spn=43.171238,82.265625 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Expecting? Get great news right away with email Auto-Check. Try the Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/newmail_tools.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: OVER 100 NWAs NOW ENDING ON EBAY
My big friday sale of over 100 ebay meteorites has just started to end and will finish ending over the next few hours. Of note is a bunch of my NWA irons that UCLA found as Zagora but I suspect the majority of them are the new NWA iron. Many started at a penny. I cant tell them apart so you can be surprised on which one that you will get. Several dozen started at a penny (And some still there) See my ebay id AMUNRE http://stores.ebay.com/AMUNRE-COLLECTIBLES-AND-GEMSTONES_Meteorites_W0QQcolZ4QQdirZ1QQfsubZ4QQftidZ2QQtZkm Dont forget to check out my ebay store items either. I have 450 meteorites now on ebay Cheers DEAN www.meteoriteshop.com Get your own web address. Have a HUGE year through Yahoo! Small Business. http://smallbusiness.yahoo.com/domains/?p=BESTDEAL __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Petrographic Thin Section Maker
RE: Thin Section Maker Stay tuned. I will soon have several nice thin sections up for sale with an AD here on this list. These are as good or even better than the others that I have previously made. Eventually, me and my partner will have a thin section site up. But for now I will list these as I make them. Steve Schoner IMCA #4470 [meteorite-list] Petrographic Thin Section Maker bernd . pauli Thu, 29 Mar 2007 12:50:11 -0800 Capt'n Blood: I have never used ANY other thin section maker. Cost is way higher than others, but product is vastly superior...He also takes MONTHS to get things made ... Good things do take time, as we all know. A superior product even longer! Paul and others may also be interested in this piece of information: Our very own Steve Schoner has also started producing his own thin sections. So far I've only acquired one of these, the Potter TS + the 1.2-gram slice this TS was cut from. To be able to say how professional Steve's thin sections are, I would have to see several different TS, especially ones with lots of chondrules, or ones with colorful crystals (brachinites, acapulcoites, etc.), ones with a lot of delicate details, etc. But, maybe, Steve would like to chime in and share his perspective! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] How to go from the Tucson show to the Ensisheim show
On Fri, 30 Mar 2007 15:07:08 -0400, you wrote: Step 23 is pretty much a killer. Darn, I see that link I provided gave the original NY to Dublin one. I had changed the map to from Tucson to Ensisheim to make the joke somewhat meteorite related. The swim across the atlantic ocean step was step 40 in that one. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] How to go from the Tucson show to theEnsisheim show
FROM: Tucson, AZ Ensisheim, France: http://maps.google.com/maps?f=dhl=ensaddr=new+york,+nydaddr=Dublin,+Irela ndsll=57.984808,-55.019531sspn=72.354033,164.53125layer=ie=UTF8om=1z=4 ll=48.166085,-36.5625spn=43.171238,82.265625 6,605 mi (about 30 days 23 hours) ... Well, average for this search Drive is 8.8896366 Mils per hour according to Google You only have Swim across the Atlantic Ocean 3.462 miles. If someone wants to calculate how fast should you drive and swim? ;-) Sergey -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Darren Garrison Sent: Friday, March 30, 2007 11:28 PM To: Dave Carothers Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] How to go from the Tucson show to theEnsisheim show On Fri, 30 Mar 2007 15:07:08 -0400, you wrote: Step 23 is pretty much a killer. Darn, I see that link I provided gave the original NY to Dublin one. I had changed the map to from Tucson to Ensisheim to make the joke somewhat meteorite related. The swim across the atlantic ocean step was step 40 in that one. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ NOD32 2157 (20070330) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] nwa 1685
My new 112 gram nwa 1685 came today from simon deboer.I know I cannot say,that I have seen many other nwa 1685,but this one is even better than my 198 gram piece.It has the dark nice black fusion crust on it as well as the brown patina of being in the ground for so long on it's bottom.It has nice little thumbprinting all over and jet black glossy fusion crust is simple spectacular.This one is 100% crusted.Picvture on my homepage of my website.This is such a mystery but so beautiful. steve arnold Steve R.Arnold,chicago,Ill,Usa!! Collecting Meteorites since 06/19/1999!! www.chicagometeorites.net Ebay I.D. Illinoismeteorites Don't get soaked. Take a quick peek at the forecast with the Yahoo! Search weather shortcut. http://tools.search.yahoo.com/shortcuts/#loc_weather __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] How to go from the Tucson show to theEnsisheim show
Dave, Sounds good to me! I hardly can swim 200 meters or so. All the best, Sergey -Original Message- From: Dave Freeman mjwy [mailto:[EMAIL PROTECTED] Sent: Saturday, March 31, 2007 12:50 AM To: Sergey Vasiliev Subject: Re: [meteorite-list] How to go from the Tucson show to theEnsisheim show How about 75 miles an hour and one mile an hour! Dave F. Sergey Vasiliev wrote: FROM: Tucson, AZ Ensisheim, France: http://maps.google.com/maps?f=dhl=ensaddr=new+york,+nydaddr=Dublin,+Irela ndsll=57.984808,-55.019531sspn=72.354033,164.53125layer=ie=UTF8om=1z=4 ll=48.166085,-36.5625spn=43.171238,82.265625 6,605 mi (about 30 days 23 hours) ... Well, average for this search Drive is 8.8896366 Mils per hour according to Google You only have Swim across the Atlantic Ocean 3.462 miles. If someone wants to calculate how fast should you drive and swim? ;-) Sergey -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Darren Garrison Sent: Friday, March 30, 2007 11:28 PM To: Dave Carothers Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] How to go from the Tucson show to theEnsisheim show On Fri, 30 Mar 2007 15:07:08 -0400, you wrote: Step 23 is pretty much a killer. Darn, I see that link I provided gave the original NY to Dublin one. I had changed the map to from Tucson to Ensisheim to make the joke somewhat meteorite related. The swim across the atlantic ocean step was step 40 in that one. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ NOD32 2157 (20070330) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ NOD32 2157 (20070330) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tiny Henbury
Hello All, Does anyone have a Henbury for sale that weighs under 1g...In fact under 0.50g would be preferred. Thanks, Cj Nothing in life is to be feared. It is only to be understood ... _ Mortgage refinance is hot 1) Rates near 30-yr lows 2) Good credit get intro-rate 4.625%* https://www2.nextag.com/goto.jsp?product=10035url=%2fst.jsptm=ysearch=mortgage_text_links_88_h2a5fs=4056p=5117disc=yvers=743 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] OT: Mark Bostick`s Meteorite chatroom anyone?
http://www.meteoritearticles.com/chatroom.html Meteorite topics please. Thanks to Mark Bostick! Dirk Ross...Tokyo __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hey Dean! Whatcha' doing down there!!!
Did you fire off a boxfull of your NWA's over the harbour last night? Good show ol' buddy! Take care, Mike http://www.tv3.co.nz/MeteorshoweroverAuckland/tabid/209/articleID/24248/Default.aspx Meteor shower over AucklandSat-31-Mar-2007 9:18am A meteor shower is believed to be responsible for a light show over Auckland's Waitemata Harbour this morning. A number of callers to police reported seeing colourful or white lights from the North Shore, Kohimarama and as far South as Kawakawa Bay at around five thirty. Inspector Willie Taylor says there has been no indication of any navy exercises or ships in distress, and the lights were probably fragments from a meteorite shower. 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Desiccants For Meteorites
3-29-07Hello Al, I have used the blue changing to pink desiccant for 13 years, and it works fine UNLESS (as you stated) it comes in contact with an iron meteorite. I had to re-etch a beautiful slice of Cape York because when I first started using the color changing desiccant I didn't know about the chloride in the desiccant. Otherwise, it works great! High flying regards, Fred Hall ** See what's free at http://www.aol.com. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] meteorite coins and other ridiculous wastes oftime
Hi Martin. You are nearly to be erradicated from the list, acused of beeing a comunist... Each time I spoke against this and others scientific uses of meteorites I was insulted by the pirates. I warned you. AA - Original Message - From: Martin Altmann [EMAIL PROTECTED] To: 'Thaddeus Besedin' [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 11:44 AM Subject: Re: [meteorite-list] meteorite coins and other ridiculous wastes oftime Hi Thaddeus, what are your suggestions to improve those circumstances? For me personally, it would be interesting, how many of the list members opine, that meteorites shouldn't be objects of commerce. Can somebody set up a poll? Martin Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Thaddeus Besedin Gesendet: Donnerstag, 29. März 2007 07:38 An: meteorite-list@meteoritecentral.com Betreff: [meteorite-list] meteorite coins and other ridiculous wastes of time List, Do we need Franklin Mint-esque coins to hype the insuperable wonder of actual meteoritic material free of made-to-order home shopping network (no trademark) gimmick? These rank amongst the greatest achievements of Mike Farmer, capitalist of little self-control and imagination. Give us rocks, and that's it: you sell rocks. Collectors can become humorously obsessive when all reference to our target interests are accepted. Coins will distract from oxidation, reduction, recrystallization, and chondrules. -Thaddeus Besedin It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Missed Meteorites Hunter/ Aid
is not mohamed ait ozrou?? all have the same names impossible to understand what of this it is. For the spam, good you not speackis well.. Matteo --- Michael Farmer [EMAIL PROTECTED] ha scritto: Aid Mohhamed is a nice guy, and a friend of mine, and he NEVER sent an email to list list. Michael Farmer So perhaps the endless spams to this list were from you, not Aid. --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: Thanks God, have ended to spam the list and in private shipping tons of emails with different emails Matteo --- Alhyane Abdelaziz [EMAIL PROTECTED] ha scritto: Dear List, There in Morocco, was a very good friend to most of us, he is Mohamed Aid, the MOROCCO METEORITES MAN, this honorable guy went to Algeria to get some stones, but unfortunatly was arested by Algerian Melitary and he is in jail now, I tried myself to get some news about him, but nothing made a large smile on my face, just disapointing and being so sad. Most of very rare stones, Lunar, Martian ... were purchased from this poor guy. To those whom know Mohamed Aid, please pray for him to getting back home, or at least write some words, they may encourage him when returns to us, his inbox is desabled and can not receive emails. Cheers Aziz - Be a PS3 game guru. Get your game face on with the latest PS3 news and previews at Yahoo! Games. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___ L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___ L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Abstract: EL3 Chondrite (not Aubrite) NorthwestAfrica 2828
I hate only determinated americans, type those that they claim to know all their even if in wrong or the super men's that they think to do all their, one of this you are and other few persons, for the remainder I have buy for 10 years meteorites in USA without any problem. The unique, I repeat, I hate its person type you only good to speack for nothing without any experiences only why the others they believe your words its the uniquebig mistake.. Matteo --- Michael Farmer [EMAIL PROTECTED] ha scritto: Matteo, why don't you just get it off your chest, and say here that you hate Americans. You have made it quite clear in many posts recently, so just say it once and for all, then you wont have to worry about sending meteorites to, or buying meteorites from Americans. Michael Farmer --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: unfortunately all analysis say this material I have here is not a EL but a Aubrite...is not possible have all from the world, dear USA people Matteo --- E.P. Grondine [EMAIL PROTECTED] ha scritto: Hello Sterling - The present ice age is not going to return. The currents of the Pacific Ocean were altered by a massive impact at the end of the last ice age, and most likely that impact was what ended it. The important point here is how long NWA meteorites have been accumulating, and as you point out it has been a relatively short period. Ed E.P. Grondine Man and Impact in the Americas $34.95 at amazon, or contact me off list --- Sterling K. Webb [EMAIL PROTECTED] cglobal.net wrote: Hi, All, an ancient fluvial and/or acidic lacustrine environment... Most people think of the Sahara as an ancient, primordial environment. It's a relatively new feature. The Sahara was a well-watered mixed forest and glassland temperate environment, with lakes and many rivers (whose ancient courses are still visible in many places) 14,000 years ago and more. There was plentiful game and a large human population. The NE Sahara seems to have desertified first, driving humans into the Nile Valley. By 8 to 10 thousand years ago, it was a dry grassland and the lakes and rivers were vanishing rapidly. The Sahara grows from its center, where the bulk of the sand is generated that flows out to make the Great Sand Sea. The process is on-going and the remains of vast Roman plantations can be found 100 miles or more into the Sand that were thriving and productive 1600 years ago! North Africa was the Breadbasket of the Roman Empire, green and growing. Like so many deserts, it is unlikely to revert to a paradise again when the present Ice Age resumes after this interglacial, because of the smothering effect of the Sand. The Amazon Rain Forest, another temporary Interglacial abnormality, will likely recover from the damage done by its runaway forestation and revert to the vast rolling Sea of Grass it was 12 to 16 thousand years ago, when things get back to normal. Any meteorite in the Sahara need not be highly ancient to be completely weathered out. One sees statements that completely weathered NWA's must have terrestrial ages of 40 to 50 thousand years. They would IF the Sahara had always been as dry as it is, but it hasn't been. They need only be old enough to have been exposed during the wet times. This one seems to have sat in the lake bottom for a long time, though, for all those changes. Still, I doubt it's more than 20,000 years old, tops, and it could be much younger. Chondrites don't last that long in water! Sterling K. Webb - - Original Message - From: Jeff Kuyken [EMAIL PROTECTED] To: Meteorite List meteorite-list@meteoritecentral.com Sent: Sunday, March 25, 2007 1:39 AM Subject: [meteorite-list] Abstract: EL3 Chondrite (not Aubrite) NorthwestAfrica 2828 Hi all, Thought some may find this abstract that I just found interesting. http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006AGUFM.P51E1247K Cheers, Jeff -- Title: EL3 Chondrite (not Aubrite) Northwest Africa 2828: An Unusual Paleo-meteorite Occurring as Cobbles in a Terrestrial Conglomerate Authors: Kuehner, S. M.; Irving, A. J.; Bunch, T. E.; Wittke, J. H. Publication: American Geophysical Union, Fall Meeting 2006, abstract #P51E-1247 Publication Date: 12/2006 Abstract: Although we recently
Re: [meteorite-list] blue crystals as desiccants
Hi Zelimir and list, Many thanks for your well written information on desiccants and taking the time to share with all of us. While I didn't know the reasons chemically behind the crystals, I did know from experience that the crystals weren't detrimental from using them with specimens I keep. It is great to have the chemical understanding now and I am sure I speak for others who very much appreciate your taking the time to write this to the list!!! All my best to you! --AL Mitterling Zelimir Gabelica wrote: Hi Al, list, The blue crystals are indeed a cobalt chloride. Most of the current colored (blue) dessicants actually consist in impregnating silica gel beads (balls etc), by dehydrated cobalt chloride, that is blue. For those who worry about the chemistry involved, let me ensure you that (in principle) that compound, as well as silica gel, shouldn't behave harmful to meteorites, provided the dessicant is not in direct contact with the meteorite surface (what Al observed is therefore correct). For those who wish to know more about what is going on, on a molecular level, the old popular chemistry stated that anhydrous Co(II) chloride (CoCl2) was blue, while once hydrated with 6 water molecules, it gets a red-pink color, thus becoming CoCl2.6H2O. This is actually not so. The real reaction is as follows: In a fully dry medium, two (Co(H2O)6)Cl2 (pink) molecules would dehydrate, thus loose all their 12 H2O molecules, and eventually yield anhydrous Co(CoCl4). You can note that the coordination of Co(II) ion (or Co2+ ion) had changed. It was initially octahedral (6 water molecules surrounding a Co2+ ion - also noted Co(II)) and it became, upon dehydration, tetrahedrally coordinated, thus consisting in an anion CoCl4 2-, neutralized by a Co 2+ cation. In other words, two molecules of hexaaquacobalt(II) chloride transform, upon loosing their 12 water molecules, into anhydrous cobalt(II)tetrachlorocobaltate(II). The change of coordination is basically responsible for the color change. Sorry for those who are not familiar with (or hate) chemical formulas but the message is that as soon as the dessicant is blue, the chloride anions remain inside the coordination sphere of the cobalt complex as ligands and (probably) won't diffuse towards the meteorite, even if the dessicant is in contact. Upon rehydration (perfectly reversible), it is the water that migrates inside the coordination sphere of Co(II) (that now gets an octahedral symmetry) and the chlorides are now out of the coordination sphere, (thus perhaps more prompt to react with the meteorite if in contact, although probably not, because the whole salt, so neutralized, is still very stable). As a conclusion and whatever the chemistry be, both complexes are quite stable and I don't believe chloride ions will ever diffuse towards the meteorite surface if the dessicant is adequately separated from it (I mean water, that readily diffuses through the whole system, won't bring along the chloride ions during its migration). Also, bear in mind that the cobalt salt is only a color indicator of the ambient humidity (moisture). Red means there is water around and blue meaning the environment is really anhydrous. The silica gel is the real dessicant (it absorbs both the cobalt salt and water into its porous texture). In other words, the color of the impregnated Co salt indicates whether the silica gel is still empty (of water) and thus a good drying agent (blue) or it is saturated with water (pink), then meaning that water is all around and thus also in contact with the meteorite. Hoping this can help. If collectors use other type of colors (or dyes), it is better to check the chemical properties of the dye first. Have fun, Zelimir __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tennessee fall picture on postcard ,Cosby Creek.
Hello Robin; Cosby Creek is available on the market.Geoff Cintron was selling it when i acquired my specimen from him.I have visually hunted Cosby and,so far,found nothing.There is a good campground there along the creek and a good place to stay and look.Cosby is between Newport and Gatlinburg Tn.A good place to visit and maybe even go to Dollywood in pigeon forge.If you go hunting there or anywhere else,i wish you the best of luck and enjoyment. Best Regards;Herman Archer. East Tennessee. ** See what's free at http://www.aol.com. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] meteorite coins and other ridiculous wastes oftime
Armando is back, I knew it would not take long for him to start calling people names again. Michael Farmer --- Armando Afonso [EMAIL PROTECTED] wrote: Hi Martin. You are nearly to be erradicated from the list, acused of beeing a comunist... Each time I spoke against this and others scientific uses of meteorites I was insulted by the pirates. I warned you. AA - Original Message - From: Martin Altmann [EMAIL PROTECTED] To: 'Thaddeus Besedin' [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 11:44 AM Subject: Re: [meteorite-list] meteorite coins and other ridiculous wastes oftime Hi Thaddeus, what are your suggestions to improve those circumstances? For me personally, it would be interesting, how many of the list members opine, that meteorites shouldn't be objects of commerce. Can somebody set up a poll? Martin Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Thaddeus Besedin Gesendet: Donnerstag, 29. März 2007 07:38 An: meteorite-list@meteoritecentral.com Betreff: [meteorite-list] meteorite coins and other ridiculous wastes of time List, Do we need Franklin Mint-esque coins to hype the insuperable wonder of actual meteoritic material free of made-to-order home shopping network (no trademark) gimmick? These rank amongst the greatest achievements of Mike Farmer, capitalist of little self-control and imagination. Give us rocks, and that's it: you sell rocks. Collectors can become humorously obsessive when all reference to our target interests are accepted. Coins will distract from oxidation, reduction, recrystallization, and chondrules. -Thaddeus Besedin It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Wow, nice tactites
http://news10now.com/content/all_news/?ArID=100315SecID=83 Museum exhibit showcases different uses of glass Updated: 3/30/2007 7:06:21 PM By: Kat De Maria Curiosities of Glassmaking pays tribute to unusual collections that date back centuries known as cabinets of curiosities. The cabinet of curiosities typically included botanical specimens, insects, unusual horns or tusks, and skeletons. Kind of all the kinds of things that were made in the natural world that were deemed interesting and unusual, modern glass curator Tina Oldknow said. So, Tina decided to create her own cabinets of curiosity. She went through the museum's collections and filled these cases with all things glass, many of which were rather unique. I found odd things from Corning Glass Works made during the second World War. Because of the metal shortages, they made things like glass-tipped bullets and glass irons, Oldknow said. Some of the curiosities date back a whole lot further, such as beads from the tenth century B.C. that were believed to ward off the evil eye and balls to ward off witches. And, those items don't even count among the most morbid. We have a copy of a patent that was issued by the US government in 1903 to a man from Herkimer, New York for preserving the dead in glass, Oldknow said. Some of the curiosities aren't even man-made. We also have in our collection wonderful examples of glass made by nature: fulgarites made when lightning strikes sand or tactite made from meteorite impacts, Oldknow said. The curator said the items' diversity represents the range of glass displayed elsewhere in the museum. They really don't expect to see the kind of range of things that they see throughout the museum. This show is kind of a little encapsulation of all that, Oldknow said. And, some other things for curiosity's sake. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Matteo's Hatred SPAM
Hello Matteo and All who are tired of his current SPAM rage, Matteo: Calm down! Hate is a very strong word. The only SPAM I am receiving (amongst the Nigerians, Lotteries, Moroccan Dealers and Other Get-Rick-Quick Schemes) are from YOU and now apparently Armondo, mostly personal attacks against Mike Farmer. Get over it and leave your anger-filled emails to yourself (or directly to who you 'hate' that day)!! I believe you have plenty of knowledgeable and informative thoughts you can contribute to this Meteorite List, why do you strive to stand out to be the Mike-hater (and 'some' Americans) instead of someone who contributes to the better of meteoritics and this List ?? Very tired and bored of the nonsense, Greg - Original Message - From: M come Meteorite Meteorites [EMAIL PROTECTED] To: Michael Farmer [EMAIL PROTECTED]; Meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 12:43 AM Subject: Re: [meteorite-list] Abstract: EL3 Chondrite (not Aubrite)NorthwestAfrica 2828 I hate only determinated americans, type those that they claim to know all their even if in wrong or the super men's that they think to do all their, one of this you are and other few persons, for the remainder I have buy for 10 years meteorites in USA without any problem. The unique, I repeat, I hate its person type you only good to speack for nothing without any experiences only why the others they believe your words its the uniquebig mistake.. Matteo --- Michael Farmer [EMAIL PROTECTED] ha scritto: Matteo, why don't you just get it off your chest, and say here that you hate Americans. You have made it quite clear in many posts recently, so just say it once and for all, then you wont have to worry about sending meteorites to, or buying meteorites from Americans. Michael Farmer --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: unfortunately all analysis say this material I have here is not a EL but a Aubrite...is not possible have all from the world, dear USA people Matteo --- E.P. Grondine [EMAIL PROTECTED] ha scritto: Hello Sterling - The present ice age is not going to return. The currents of the Pacific Ocean were altered by a massive impact at the end of the last ice age, and most likely that impact was what ended it. The important point here is how long NWA meteorites have been accumulating, and as you point out it has been a relatively short period. Ed E.P. Grondine Man and Impact in the Americas $34.95 at amazon, or contact me off list --- Sterling K. Webb [EMAIL PROTECTED] cglobal.net wrote: Hi, All, an ancient fluvial and/or acidic lacustrine environment... Most people think of the Sahara as an ancient, primordial environment. It's a relatively new feature. The Sahara was a well-watered mixed forest and glassland temperate environment, with lakes and many rivers (whose ancient courses are still visible in many places) 14,000 years ago and more. There was plentiful game and a large human population. The NE Sahara seems to have desertified first, driving humans into the Nile Valley. By 8 to 10 thousand years ago, it was a dry grassland and the lakes and rivers were vanishing rapidly. The Sahara grows from its center, where the bulk of the sand is generated that flows out to make the Great Sand Sea. The process is on-going and the remains of vast Roman plantations can be found 100 miles or more into the Sand that were thriving and productive 1600 years ago! North Africa was the Breadbasket of the Roman Empire, green and growing. Like so many deserts, it is unlikely to revert to a paradise again when the present Ice Age resumes after this interglacial, because of the smothering effect of the Sand. The Amazon Rain Forest, another temporary Interglacial abnormality, will likely recover from the damage done by its runaway forestation and revert to the vast rolling Sea of Grass it was 12 to 16 thousand years ago, when things get back to normal. Any meteorite in the Sahara need not be highly ancient to be completely weathered out. One sees statements that completely weathered NWA's must have terrestrial ages of 40 to 50 thousand years. They would IF the Sahara had always been as dry as it is, but it hasn't been. They need only be old enough to have been exposed during the wet times. This one seems to have sat in the lake bottom for a long time, though, for all those changes. Still, I doubt it's more than 20,000 years old, tops, and it could be much younger. Chondrites don't last that long in water! Sterling K. Webb - - Original Message - From: Jeff Kuyken [EMAIL PROTECTED] To: Meteorite List meteorite-list@meteoritecentral.com
Re: [meteorite-list] Matteo's Hatred SPAM
Hello Matteo, Again, YOU are mistaken because Mike and I do NOT argue on the List. You just seem to be misled by the need to complain to an open audience. Unfortunately you have found me as the only available ear tonight so, as I asked before, Calm Down, let it all go and keep your hatred and attacks off list. Get a clue, dude! Greg - Original Message - From: M come Meteorite Meteorites [EMAIL PROTECTED] To: Greg Hupe [EMAIL PROTECTED]; Meteorite-list@meteoritecentral.com Sent: Saturday, March 31, 2007 12:52 AM Subject: Re: Matteo's Hatred SPAM and I am a bit broken of idiots type Mike Farmer every time, if you not are of the same idea, start to insult, offence etc... and say he are the unique have reason...sorry but similar people I do not support them. I have say for 300 times to farmer to block my email, and he continue to broken me why read my messages, for not speack of the nicest private emails he send to me. Just you Greg say of the attacks to Farmer when for months you and Farmer have quarreled in this list, promising sparks when you found yourselves in Tucson and after nothing happened...please.. Matteo --- Greg Hupe [EMAIL PROTECTED] ha scritto: Hello Matteo and All who are tired of his current SPAM rage, Matteo: Calm down! Hate is a very strong word. The only SPAM I am receiving (amongst the Nigerians, Lotteries, Moroccan Dealers and Other Get-Rick-Quick Schemes) are from YOU and now apparently Armondo, mostly personal attacks against Mike Farmer. Get over it and leave your anger-filled emails to yourself (or directly to who you 'hate' that day)!! I believe you have plenty of knowledgeable and informative thoughts you can contribute to this Meteorite List, why do you strive to stand out to be the Mike-hater (and 'some' Americans) instead of someone who contributes to the better of meteoritics and this List ?? Very tired and bored of the nonsense, Greg - Original Message - From: M come Meteorite Meteorites [EMAIL PROTECTED] To: Michael Farmer [EMAIL PROTECTED]; Meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 12:43 AM Subject: Re: [meteorite-list] Abstract: EL3 Chondrite (not Aubrite)NorthwestAfrica 2828 I hate only determinated americans, type those that they claim to know all their even if in wrong or the super men's that they think to do all their, one of this you are and other few persons, for the remainder I have buy for 10 years meteorites in USA without any problem. The unique, I repeat, I hate its person type you only good to speack for nothing without any experiences only why the others they believe your words its the uniquebig mistake.. Matteo --- Michael Farmer [EMAIL PROTECTED] ha scritto: Matteo, why don't you just get it off your chest, and say here that you hate Americans. You have made it quite clear in many posts recently, so just say it once and for all, then you wont have to worry about sending meteorites to, or buying meteorites from Americans. Michael Farmer --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: unfortunately all analysis say this material I have here is not a EL but a Aubrite...is not possible have all from the world, dear USA people Matteo --- E.P. Grondine [EMAIL PROTECTED] ha scritto: Hello Sterling - The present ice age is not going to return. The currents of the Pacific Ocean were altered by a massive impact at the end of the last ice age, and most likely that impact was what ended it. The important point here is how long NWA meteorites have been accumulating, and as you point out it has been a relatively short period. Ed E.P. Grondine Man and Impact in the Americas $34.95 at amazon, or contact me off list --- Sterling K. Webb [EMAIL PROTECTED] cglobal.net wrote: Hi, All, an ancient fluvial and/or acidic lacustrine environment... Most people think of the Sahara as an ancient, primordial environment. It's a relatively new feature. The Sahara was a well-watered mixed forest and glassland temperate environment, with lakes and many rivers (whose ancient courses are still visible in many places) 14,000 years ago and more. There was plentiful game and a large human population. The NE Sahara seems to have desertified first, driving humans into the Nile Valley. By 8 to 10 thousand years ago, it was a dry grassland and the lakes and rivers were vanishing rapidly. The Sahara grows from its center, where the bulk of the sand is generated that flows out to make the Great Sand Sea. The process is on-going and the remains of vast Roman plantations can be found 100 miles or more into the Sand that were thriving and productive 1600 years ago! North Africa was the Breadbasket of the Roman Empire, green and growing. Like so many deserts, it is
Re: [meteorite-list] Wow, nice tactites
Hi, Thiz reportor neads an speell checher. Sterling K. Webb --- - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, March 30, 2007 10:54 PM Subject: [meteorite-list] Wow, nice tactites http://news10now.com/content/all_news/?ArID=100315SecID=83 Museum exhibit showcases different uses of glass Updated: 3/30/2007 7:06:21 PM By: Kat De Maria Curiosities of Glassmaking pays tribute to unusual collections that date back centuries known as cabinets of curiosities. The cabinet of curiosities typically included botanical specimens, insects, unusual horns or tusks, and skeletons. Kind of all the kinds of things that were made in the natural world that were deemed interesting and unusual, modern glass curator Tina Oldknow said. So, Tina decided to create her own cabinets of curiosity. She went through the museum's collections and filled these cases with all things glass, many of which were rather unique. I found odd things from Corning Glass Works made during the second World War. Because of the metal shortages, they made things like glass-tipped bullets and glass irons, Oldknow said. Some of the curiosities date back a whole lot further, such as beads from the tenth century B.C. that were believed to ward off the evil eye and balls to ward off witches. And, those items don't even count among the most morbid. We have a copy of a patent that was issued by the US government in 1903 to a man from Herkimer, New York for preserving the dead in glass, Oldknow said. Some of the curiosities aren't even man-made. We also have in our collection wonderful examples of glass made by nature: fulgarites made when lightning strikes sand or tactite made from meteorite impacts, Oldknow said. The curator said the items' diversity represents the range of glass displayed elsewhere in the museum. They really don't expect to see the kind of range of things that they see throughout the museum. This show is kind of a little encapsulation of all that, Oldknow said. And, some other things for curiosity's sake. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
