Re: [meteorite-list] Glass in meteorites
I think it is fairly clear that the glass in chondrites, which forms in chondrules because of their rapid cooling from a partially molten state, is stable on the time-scale of the age of the solar system. In the most primitive chondrites, the ones unaffected by reheating or alteration on asteroids, the glass is preserved in pristine condition to this day. In metamorphosed chondrites, glass may survive in protected areas of type 3.9-4 material, but the reheating caused most of the glass to crystallize into feldspar early in solar system history. In aqueously altered chondrites, like CMs, the glass was mostly replaced by phyllosilicates and other phases due to the chemical action of water on the asteroid. Water is apparently a key ingredient in devitrifying silicate glasses, especially important in earth rocks. The image on Tom's website is almost certainly one of dendrites (probably olivine) in what was once glass. These dendrites were the result of rapid crystallization during cooling of a chondrule melt. Because this is a metamorphosed chondrite, the glass is now most likely replaced by fine-grained feldspathic material. Jeff At 12:24 AM 6/25/2008, [EMAIL PROTECTED] wrote: Hi, Several years ago I ran onto an unusual chondrule in JaH 055 that looks like glass but it is forming in crystals. I have had various explanations presented to me and all involved Glass This might be On topic? If any one is up to taking a look and sharing their observations, I would greatly appreciate it. Just go to my Meteorite Times Micrograph Gallery http://www.meteorite.com/meteorite-gallery/meteorites-alpha_frame.htm and select alphabetical sorting, JaH 055, and then crystal structure. These shots were produced using incident (reflected light). Thanks, Tom Phillips In a message dated 6/24/2008 10:02:55 P.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Have any studies been done on decay of glasses in meteorites into crystaline configurations? Is there a mesurable rate, or does it not happen? This story brought that to mind-- if impact-generated glasses in meteorites HAVE NOT decayed into crystaline material in 4 billion years, it's fairly good evidence that it won't happen in billions of years, as the story speculates. Dr. Jeffrey N. Grossman phone: (703) 648-6184 US Geological Survey fax: (703) 648-6383 954 National Center Reston, VA 20192, USA __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Glass in meteorites
Hi Jeff, Congratulations on the cover story in Science on formation conditions of chondrules. Your color photograph of a Semarkona cross section is fabulous. Cheers, Jim Baxter I think it is fairly clear that the glass in chondrites, which forms in chondrules because of their rapid cooling from a partially molten state, is stable on the time-scale of the age of the solar system. In the most primitive chondrites, the ones unaffected by reheating or alteration on asteroids, the glass is preserved in pristine condition to this day. In metamorphosed chondrites, glass may survive in protected areas of type 3.9-4 material, but the reheating caused most of the glass to crystallize into feldspar early in solar system history. In aqueously altered chondrites, like CMs, the glass was mostly replaced by phyllosilicates and other phases due to the chemical action of water on the asteroid. Water is apparently a key ingredient in devitrifying silicate glasses, especially important in earth rocks. The image on Tom's website is almost certainly one of dendrites (probably olivine) in what was once glass. These dendrites were the result of rapid crystallization during cooling of a chondrule melt. Because this is a metamorphosed chondrite, the glass is now most likely replaced by fine-grained feldspathic material. Jeff At 12:24 AM 6/25/2008, [EMAIL PROTECTED] wrote: Hi, Several years ago I ran onto an unusual chondrule in JaH 055 that looks like glass but it is forming in crystals. I have had various explanations presented to me and all involved Glass This might be On topic? If any one is up to taking a look and sharing their observations, I would greatly appreciate it. Just go to my Meteorite Times Micrograph Gallery http://www.meteorite.com/meteorite-gallery/meteorites-alpha_frame.htm and select alphabetical sorting, JaH 055, and then crystal structure. These shots were produced using incident (reflected light). Thanks, Tom Phillips In a message dated 6/24/2008 10:02:55 P.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Have any studies been done on decay of glasses in meteorites into crystaline configurations? Is there a mesurable rate, or does it not happen? This story brought that to mind-- if impact-generated glasses in meteorites HAVE NOT decayed into crystaline material in 4 billion years, it's fairly good evidence that it won't happen in billions of years, as the story speculates. Dr. Jeffrey N. Grossman phone: (703) 648-6184 US Geological Survey fax: (703) 648-6383 954 National Center Reston, VA 20192, USA __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (no subject)
Mirko Graul Meteorite Quittenring.4 16321 Bernau GERMANY Phone: 0049-1724105015 E-Mail: [EMAIL PROTECTED] IMCA-Member: 2113 (International Meteorite Collectors Association) Web: www.meteorite-mirko.de __ Gesendet von Yahoo! Mail. Dem pfiffigeren Posteingang. http://de.overview.mail.yahoo.com __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] More Impressions of Ensisheim Meteorite Show
Hello List and friends from Meteorites, back from France i have list on my homepage arround 80 photos from the Ensisheim Meteorite Show. Enjoy the view of the many photos. The show was very nice and the meetings with all friends was very good! Here the links to the 8 galleries: http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac608d3b02/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098861f/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac60989d2e/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098b03d/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098c84c/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713bd454/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713c2a72/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac808e921e/index.html Enjoy the view of the many photos. Many greetings Mirko Mirko Graul Meteorite Quittenring.4 16321 Bernau GERMANY Phone: 0049-1724105015 E-Mail: [EMAIL PROTECTED] IMCA-Member: 2113 (International Meteorite Collectors Association) Web: www.meteorite-mirko.de __ Gesendet von Yahoo! Mail. Dem pfiffigeren Posteingang. http://de.overview.mail.yahoo.com __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] More Impressions of Ensisheim Meteorite Show
Thanks, Mirko and also Hanno, for the great Ensisheim pics. Matthias Baermann - Original Message - From: Mirko Graul [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 4:21 PM Subject: [meteorite-list] More Impressions of Ensisheim Meteorite Show Hello List and friends from Meteorites, back from France i have list on my homepage arround 80 photos from the Ensisheim Meteorite Show. Enjoy the view of the many photos. The show was very nice and the meetings with all friends was very good! Here the links to the 8 galleries: http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac608d3b02/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098861f/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac60989d2e/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098b03d/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098c84c/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713bd454/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713c2a72/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac808e921e/index.html Enjoy the view of the many photos. Many greetings Mirko Mirko Graul Meteorite Quittenring.4 16321 Bernau GERMANY Phone: 0049-1724105015 E-Mail: [EMAIL PROTECTED] IMCA-Member: 2113 (International Meteorite Collectors Association) Web: www.meteorite-mirko.de __ Gesendet von Yahoo! Mail. Dem pfiffigeren Posteingang. http://de.overview.mail.yahoo.com __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Santa Fe, NM Impact Crater article
Dirk: Any idea on the exact position of this structure (Lat/Long)? Chuck http://www.ottawa.rasc.ca/articles/odale_chuck/earth_craters/index.html Date: Tue, 24 Jun 2008 16:35:39 -0700 (PDT) From: drtanuki [EMAIL PROTECTED] Subject: [meteorite-list] Santa Fe, NM Impact Crater article Dear List, A recent article about the newly discovered Santa Fe impact crater: http://space.newscientist.com/article/mg19826604.800-roadside-crater-should-have-made-more-of-an-impact.html?feedId=space_rss20 Best, Dirk Ross...Tokyo __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Peep Show - Tit for Tat
Dear List Members, To go along with today's Picture of The Day, graciously hosted by Michael Johnson, here are some additional photos of the younger, healthier sister to the Venus Stone: Tit for Tat The younger, healthier sister squaring off to the Venus Stone (replica shown). A 2413-gram Saharan chondrite displaying subtle, yet stunning flow lines cresting over to the back side of this remarkable center-piece. http://www.lunarrock.com/6-25-2008/tit-4-tat.jpg Side View http://www.lunarrock.com/6-25-2008/dsc00010.jpg Left View http://www.lunarrock.com/6-25-2008/dsc7.jpg Right View http://www.lunarrock.com/6-25-2008/dsc00012.jpg I think the younger sister needs a name. Pamela has been suggested, any other names you may have in mind? Enjoy! Greg Greg Hupe The Hupe Collection NaturesVault (eBay) [EMAIL PROTECTED] www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Santa Fe, NM Impact Crater Latitude and Longitude
In “Santa Fe, NM Impact Crater article”, Charles O'Dale asked about the Santa Fe - Hyde Park, New Mexico, Impact Structure: “Any idea on the exact position of this structure (Lat/Long)?” According to the SEIS database, version 10, it is: Latitude: 35.728277 Longitude: 105.85966 The SEIS database, version 10 can be found at: http://web.eps.utk.edu/ifsg.htm yours, Paul H. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Glass in meteorites
Hi Jeff and Jim, Wow, tell us more about the article in Science. Could it be ordered as a single copy at this point? Tom In a message dated 6/25/2008 7:27:00 A.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Hi Jeff, Congratulations on the cover story in Science on formation conditions of chondrules. Your color photograph of a Semarkona cross section is fabulous. Cheers, Jim Baxter I think it is fairly clear that the glass in chondrites, which forms in chondrules because of their rapid cooling from a partially molten state, is stable on the time-scale of the age of the solar system. In the most primitive chondrites, the ones unaffected by reheating or alteration on asteroids, the glass is preserved in pristine condition to this day. In metamorphosed chondrites, glass may survive in protected areas of type 3.9-4 material, but the reheating caused most of the glass to crystallize into feldspar early in solar system history. In aqueously altered chondrites, like CMs, the glass was mostly replaced by phyllosilicates and other phases due to the chemical action of water on the asteroid. Water is apparently a key ingredient in devitrifying silicate glasses, especially important in earth rocks. The image on Tom's website is almost certainly one of dendrites (probably olivine) in what was once glass. These dendrites were the result of rapid crystallization during cooling of a chondrule melt. Because this is a metamorphosed chondrite, the glass is now most likely replaced by fine-grained feldspathic material. Jeff At 12:24 AM 6/25/2008, [EMAIL PROTECTED] wrote: Hi, Several years ago I ran onto an unusual chondrule in JaH 055 that looks like glass but it is forming in crystals. I have had various explanations presented to me and all involved Glass This might be On topic? If any one is up to taking a look and sharing their observations, I would greatly appreciate it. Just go to my Meteorite Times Micrograph Gallery http://www.meteorite.com/meteorite-gallery/meteorites-alpha_frame.htm and select alphabetical sorting, JaH 055, and then crystal structure. These shots were produced using incident (reflected light). Thanks, Tom Phillips In a message dated 6/24/2008 10:02:55 P.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Have any studies been done on decay of glasses in meteorites into crystaline configurations? Is there a mesurable rate, or does it not happen? This story brought that to mind-- if impact-generated glasses in meteorites HAVE NOT decayed into crystaline material in 4 billion years, it's fairly good evidence that it won't happen in billions of years, as the story speculates. Dr. Jeffrey N. Grossman phone: (703) 648-6184 US Geological Survey fax: (703) 648-6383 954 National Center Reston, VA 20192, USA __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list **Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut000507) __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] New Paper on Silverpit (Impact ??) Structure, North Sea
Dear Friends, In the Journal of the Geological Society, there is a new paper on the proposed Silverpit Impact Structure. It is: Wall, M.L.T. , and J. Cartwright and R.J. Davies, 2008, An Eocene age for the proposed Silverpit Impact Crater. Journal of the Geological Society. vol. 165, no. 4, pp. 781-794 DOI: 10.1144/0016-76492007-138 http://ejournals.ebsco.com/Article.asp?ContributionID=1441435 http://ejournals.ebsco.com/direct.asp?ArticleID=4ABEBE2BF6408E5C5CB6 Using seismic stratigraphy, and microfossil, including calcareous nannofossil, data from regional wells, they dated the age of the first sediments onlapping into this structure. This relationship suggests that the structure is Middle Eocene in age. As a result, they conclude that this structure is 10 to 15 million years younger than previous age estimates and this structure is far too young to be associated with the K-T boundary. They also argue that the Silverpit structure is considerably younger than when regional folding and salt flowage occurred. This, they argue makes it too young to have been created by this regional folding and salt flowage as argued by other papers. Silverpit crater http://en.wikipedia.org/wiki/Silverpit_crater North Sea crater shows its scars http://news.bbc.co.uk/1/hi/sci/tech/4360815.stm Yours, Paul H. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars-- megawhack?
http://www.cnn.com/2008/TECH/space/06/25/twofaced.mars.ap/index.html Ancient impact may explain Mars mystery LOS ANGELES, California (AP) -- Why is Mars two-faced? Scientists say fresh evidence supports the theory that a monster impact punched the red planet, leaving behind perhaps the largest gash on any heavenly body in the solar system. Today, the Martian surface has a split personality. The southern hemisphere of Mars is pockmarked and filled with ancient rugged highlands. By contrast, the northern hemisphere is smoother and covered by low-lying plains. Three papers in Thursday's journal Nature provide the most convincing evidence yet that an outside force was responsible. According to the researchers, an asteroid or comet whacked a young Mars some 4 billion years ago, blasting away much of its northern crust and creating a giant hole over 40 percent of the surface. New calculations reveal the crater known as the Borealis basin measures 5,300 miles across and 6,600 miles long -- the size of Asia, Europe and Australia combined. It's believed to be four times bigger than the current titleholder, the South Pole-Aitken basin on Earth's moon. Astronomers have long puzzled over Mars' landscape ever since images beamed back in the 1970s showed different-looking halves. An orbiting spacecraft later observed the northern lowlands were on average 2 miles lower than the southern highlands and had a thinner crust. Scientists who had no role in the studies said the latest research strengthens the case for a colossal Martian impact, but it does not rule out the other theory that hot rock from inside the planet could have welled up and formed the different crusts. The betting odds have gone up a lot in favor of the impact model, said Walter Kiefer, a staff scientist at the Lunar and Planetary Institute in Houston. The idea of an ancient impact was first advanced by Steve Squyres of Cornell University and Don Wilhelms of the U.S. Geological Survey in the 1980s. Squyres, currently the lead scientist for the twin Mars rovers, had always hoped other scientists would pick that ball up and run with it. It wasn't a totally nutty idea that there could have been an impact, Squyres said. But finding evidence of one proved difficult because part of the basin rim is now covered by a bulging volcanic range. For one study, a team of scientists from the Massachusetts Institute of Technology and NASA's Jet Propulsion Laboratory recreated what the Martian surface would have looked like before the volcanoes formed using gravity and surface measurements from spacecraft. They determined the impact basin is oval-shaped, similar to what would be expected if a space object had hit at an angle. The shape is really one of the key pieces of evidence that it was probably formed in a giant impact, said MIT postdoctoral researcher Jeffrey Andrews-Hanna, whose original gut feeling favored the other theory. A separate group led by the California Institute of Technology developed 3-D simulations to determine the sweet spot of conditions that would form the basin. According to their calculations, a 1,000-mile-wide object traveling at more than 13,000 miles per hour -- or 24 times faster than a jetliner -- would hit Mars at an angle between 30 and 60 degrees. The collision would be equal to an explosion of 75 to 150 trillion megatons of TNT. In the third study, a team of researchers led by the University of California, Santa Cruz, found that shock waves from such an impact would disrupt the southern crust. All three teams believe there was a single giant blow and not several small hits because there's no evidence of other basins. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] More Impressions of Ensisheim Meteorite Show
I always look forward to and enjoy these show pictures - thanks, Mirko. (is it just me, or does Mike Farmer look like a big kid that never ages?) Cheers, Pete Date: Wed, 25 Jun 2008 14:21:54 + From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] More Impressions of Ensisheim Meteorite Show Hello List and friends from Meteorites, back from France i have list on my homepage arround 80 photos from the Ensisheim Meteorite Show. Enjoy the view of the many photos. The show was very nice and the meetings with all friends was very good! Here the links to the 8 galleries: http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac608d3b02/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098861f/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac60989d2e/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098b03d/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac6098c84c/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713bd454/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac713c2a72/index.html http://www.meteorite-mirko.de/0334af993b0042c09/0334af9ac808e921e/index.html Enjoy the view of the many photos. Many greetings Mirko Mirko Graul Meteorite Quittenring.4 16321 Bernau GERMANY Phone: 0049-1724105015 E-Mail: [EMAIL PROTECTED] IMCA-Member: 2113 (International Meteorite Collectors Association) Web: www.meteorite-mirko.de __ Gesendet von Yahoo! Mail. Dem pfiffigeren Posteingang. http://de.overview.mail.yahoo.com __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list _ Find hidden words, unscramble celebrity names, or try the ultimate crossword puzzle with Live Search Games. Play now! http://g.msn.ca/ca55/212 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite dealers
Hi list, My micrograph gallery gets me some interesting emails from people whom are not part of the meteorite world. I just got this email from a company that wants to purchase meteorites to be used as a give away? I occasionally sell on eBay but I do not look at myself as a meteorite dealer by any stretch. I have no personal knowledge of this company and have no idea of the quantities involved. I just thought I would pass it along to any one who wanted to email them. I think there is fear of fake meteorites that causes many to be over cautious as they enter the world of meteorite ownership for the first time. I got the OK to pass on his email so any contact will not come as a surprise. Tom Hi Tom, We were looking at purchasing small pieces of meteorites to give out to all the employees of our organization. Why Meteorites? As you can see the company corporate logo below, we have stars in it and to our understanding meteorites are nothing but “star dust”….correct us if we are wrong. What we need from you? Firstly, please let us know if we can buy the meteorites Secondly, from where can we buy authentic meteorites? Brief note on what we do? We are one of the leading event management companies in India. A brief introduction of the company is mentioned below for your reference. Introduction of our company Our full title is Wizcraft International Entertainment Pvt Ltd. We are probably known better as 'Wizcraft'. We're a team of individuals tied together through a desire to create truly inspiring and engaging experiences that help companies improve their performance, increase sales, achieve growth and build brands. We use a mix of communication techniques and media (including live events, print, web, environments and film) to work with companies and brands to help change specific beliefs and behaviours in order to strengthen relationships, increase understanding and deliver sustainable business results. Each year, we create hundreds of experiences for leading brands across every industry sector. Through a unique combination of strategic, creative and delivery specialists we provide thinking and creativity combined with an unrivalled ability to design and deliver programmes for many different types of audiences. Our clients represent nearly 75% of India's top corporate houses. Wizcraft has executed sporting events in India like national Games, Afro Asian Games, and the handover ceremony of common wealth games at Melbourne Australia. Wizcraft has created brands like IIFA Awards which are like the Oscars to the Indian Cinema. We recently executed this in Bangkok, Thailand. Have put fashion in India on a high Platform with the F-Awards. Much of our work is aimed at employees - helping to create honest encounters and dialogue, provide clarity and insight and help support the process of change for the people vital to the continued success of a business. This internal focus is a large percentage of the work we do with our clients but is by no means all. We also have a long and proud track record of creating powerful experiences aimed at other key audiences - business customers, consumers, stakeholders, the media and the general public. No matter the audience - from visitors to a trade exhibition or a conference, to those watching the Opening and Closing ceremonies of the first Afro Asian Games - we aim to engage, surprise and reward participation and help strengthen the relationship between all those involved. If you'd like to know more about what we do and who we do it for, take a Look at our website: www.wizcraftworld.com. We would really appreciate your help in giving us the above information. Thanks Regards Naveen Ghantasala, Asst. Manager – Operations, Wizcraft International Entertainment PVT Ltd. No – 25, 12th B Main, HAL 2nd Stage, Indiranagar, Bangalore 38 Tel: - +91 80 25216952, Fax: - +91 80 25272760, Hand Phone: - +91 9845557484 Website: www.wizcraftworld.com **Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut000507) __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Peep Show - Tit for Tat
Obviously, The Aphrodite Stone. What do I win? Michael on 6/25/08 9:00 AM, Greg Hupe at [EMAIL PROTECTED] wrote: Dear List Members, To go along with today's Picture of The Day, graciously hosted by Michael Johnson, here are some additional photos of the younger, healthier sister to the Venus Stone: Tit for Tat The younger, healthier sister squaring off to the Venus Stone (replica shown). A 2413-gram Saharan chondrite displaying subtle, yet stunning flow lines cresting over to the back side of this remarkable center-piece. http://www.lunarrock.com/6-25-2008/tit-4-tat.jpg Side View http://www.lunarrock.com/6-25-2008/dsc00010.jpg Left View http://www.lunarrock.com/6-25-2008/dsc7.jpg Right View http://www.lunarrock.com/6-25-2008/dsc00012.jpg I think the younger sister needs a name. Pamela has been suggested, any other names you may have in mind? Enjoy! Greg Greg Hupe The Hupe Collection NaturesVault (eBay) [EMAIL PROTECTED] www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Life is short! Break the rules! Forgive quickly! Kiss slowly! Love truly, Laugh uncontrollably.. And never regret anything that made you smile. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Paneth-meteorite kolloqium 29.-31 October 2008 in Ries-crater
Dear Meteorite friends, end of October (29.-30.) 2008, there will be a lot of interesting meteorite-lectures in the Ries-crater in Germany. (all will be in english) When you ever planned to visit the crater, this will be an interesting opportunity to register for the colloqium too. 80 participants registered already. The Paneth-Kolloquium is a small European meeting that brings together students and researchers from different fields of cosmochemistry, planetology and astrophysics. All information about the Paneth-Kolloquium 2008, registration and registration fee, abstract submission as well as accommodation is available at http://www.kosmochemie.de/ Deadline for late registration: October 15 Deadline for abstract submission: September 30 Everybody from the list, who will register, please let me know, because I´m living since 2007 in the Ries-crater and could give you some support. With best wishes from Germany, Thomas -- Pt! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Is this a meteorite
A friend of mine who lives in Germany was given this and was told it was a meteorite. http://i131.photobucket.com/albums/p298/BobaDebt/Meteorites/Markus.jpg I told him I didn't recognize it as a meteorite bit I figured I would post here just to be sure. Does anyone know what this is? Thanks __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Is this a meteorite
Looks like Silica Metal. I have something like that myself. Man made byproduct of smelting... I found some in the woods when I was 8 or 9 - kept it as my first meteorite and still have it on the shelf - good example of a wrong to show people... http://i280.photobucket.com/albums/kk196/STM_images/Meteorites/Wrongs001.jpg Sean. - Original Message - From: David Kitt Deyarmin [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 6:30 PM Subject: [meteorite-list] Is this a meteorite A friend of mine who lives in Germany was given this and was told it was a meteorite. http://i131.photobucket.com/albums/p298/BobaDebt/Meteorites/Markus.jpg I told him I didn't recognize it as a meteorite bit I figured I would post here just to be sure. Does anyone know what this is? Thanks __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Is this a meteorite
Looks to me like Chromium. The link is to a picture of a piece of chromium I have here. http://www.nepra.com/cr.JPG Drake A rock pile ceases to be a pile of rocks, the moment one contemplates it and envisions a cathedral. Drake Doc Dameräu L3CC Member http://home.sprynet.com/~monel/ www.rocketmaterials.org www.endlessmountaincandle.com www.nepra.com - Original Message - From: David Kitt Deyarmin [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 6:30 PM Subject: [meteorite-list] Is this a meteorite A friend of mine who lives in Germany was given this and was told it was a meteorite. http://i131.photobucket.com/albums/p298/BobaDebt/Meteorites/Markus.jpg I told him I didn't recognize it as a meteorite bit I figured I would post here just to be sure. Does anyone know what this is? Thanks __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Is this a meteorite
It looks like Nantan there's a lot of this at the Gem and Mineral shows. I have some that Skip Wilson gave me, looks just like it. Take a look at mine. http://www.mr-meteorite.com/nantan.htm Ruben Garcia Phoenix, Arizona http://www.mr-meteorite.com --- On Wed, 6/25/08, Sean T. Murray [EMAIL PROTECTED] wrote: From: Sean T. Murray [EMAIL PROTECTED] Subject: Re: [meteorite-list] Is this a meteorite To: David Kitt Deyarmin [EMAIL PROTECTED], meteorite-list@meteoritecentral.com Date: Wednesday, June 25, 2008, 4:28 PM Looks like Silica Metal. I have something like that myself. Man made byproduct of smelting... I found some in the woods when I was 8 or 9 - kept it as my first meteorite and still have it on the shelf - good example of a wrong to show people... http://i280.photobucket.com/albums/kk196/STM_images/Meteorites/Wrongs001.jpg Sean. - Original Message - From: David Kitt Deyarmin [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 6:30 PM Subject: [meteorite-list] Is this a meteorite A friend of mine who lives in Germany was given this and was told it was a meteorite. http://i131.photobucket.com/albums/p298/BobaDebt/Meteorites/Markus.jpg I told him I didn't recognize it as a meteorite bit I figured I would post here just to be sure. Does anyone know what this is? Thanks __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Rocks from Space Picture of the Day - June 25, 2008
Tsk, tsk, tsk [though true!!] Jerry Flaherty - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 12:38 AM Subject: [meteorite-list] Rocks from Space Picture of the Day - June 25, 2008 http://www.rocksfromspace.org/June_25_2008.html **Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut000507) __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Glass in meteorites
I guess there's glass and then there's GLASS. Jerry Flaherty - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 12:03 AM Subject: [meteorite-list] Glass in meteorites Have any studies been done on decay of glasses in meteorites into crystaline configurations? Is there a mesurable rate, or does it not happen? This story brought that to mind-- if impact-generated glasses in meteorites HAVE NOT decayed into crystaline material in 4 billion years, it's fairly good evidence that it won't happen in billions of years, as the story speculates. http://www.foxnews.com/story/0,2933,370864,00.html Scientists have made a breakthrough discovery in the bizarre properties of glass, which behaves at times like both a solid and a liquid. The finding could lead to aircraft that look like Wonder Woman's plane. Such planes could have wings of glass or something called metallic glass, rather than being totally invisible. The breakthrough involved solving the decades-old problem of just what glass is. It has been known that that despite its solid appearance, glass and gels are actually in a jammed state of matter - somewhere between liquid and solid - that moves very slowly. Like cars in a traffic jam, atoms in a glass are in something like suspended animation, unable to reach their destination because the route is blocked by their neighbors. So even though glass is a hard substance, it never quite becomes a proper solid, according to chemists and materials scientists. Work so far has concentrated on trying to understand the traffic jam, but now Paddy Royall from the University of Bristol in England, with colleagues in Canberra, Australia and Tokyo, has shown that glass fails to be a solid due to the special atomic structures that form in a glass when it cools. Icosahedron jams Some materials crystallize as they cool, arranging their atoms into a highly regular pattern called a lattice, Royall said, but although glass wants to be a crystal, as it cools the atoms become jammed in a nearly random arrangement, preventing it from forming a regular lattice. In the 1950s, Sir Charles Frank in the Physics Department at Bristol suggested that the arrangement of the jam should form what is known as an icosahedron, but at the time he was unable to prove it. An icosahedron is like a 3-D pentagon, and just as you cannot tile a floor with pentagons, you cannot fill 3-D space with icosahedrons, Royall explained. That is, you can't make a lattice out of pentagons. When it comes to glass, Frank thought, there is a competition between crystal formation and pentagons that prevents the construction of a crystal. If you cool a liquid down and it makes a lot of pentagons and the pentagons survive, the crystal cannot form. It turns out that Frank was right, Royall said, and his team proved this experimentally. You can't watch what happens to atoms as they cool because they are too small, so Royall and his colleagues used special particles called colloids that mimic atoms, but are large enough to be visible using state-of-the-art microscopy. The team cooled some down and watched what happened. What they found was that the gel these particles formed also wants to be a crystal, but it fails to become one due to the formation of icosahedra-like structures - exactly as Frank had predicted. It is the formation of these structures that underlie jammed materials and explains why a glass is a glass and not a liquid - or a solid, Royall said. The findings are detailed in the June 22 issue of the journal Nature Materials. The research was supported in part by a grant from Britain's Ministry of Education, Culture, Sports, Science and Technology as well as the Royal Society. Preventing jetliner disasters Knowing the structure formed by atoms as a glass cools represents a major breakthrough in the understanding of meta-stable materials and will allow further development of new strong yet light materials called metallic glasses, Royall said, which is already used to make some golf clubs. This stuff is generally shiny black in color, not transparent, due to having a lot of free electrons (think of mercury in an old thermometer). Metals normally crystallize when they cool, but stress builds up along the boundaries between crystals, which can lead to metal failure. For example, the world's first jetliner, the British built De Havilland Comet, fell out of the sky due to metal failure. When metals are be made to cool with the same internal structure as a glass and without crystal grain boundaries, they are less likely to fail, Royall said. Metallic glasses could be suitable for a whole range of products beyond golf clubs that need to be flexible such as aircraft wings and engine parts, he said. Glass is not what it seems Royall is part of a group of scientists who think that if you wait long enough,
[meteorite-list] looking for a nicely sculpted taza
Hi list.I am looking for a nicely sculpted taza iron.200 to 500 grams.I have $900 to spend.I can paypal right now if the right piece comes around.Let me know off list. Steve R.Arnold,chicago,Ill,Usa!! The Asteroid Belt! http://chicagometeorites.net/ Collecting Meteorites since 06/19/1999 Ebay I.D. Illinoismeteorites __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Paneth-meteorite kolloqium 29.-31 October 2008 inRies-crater
Sounds like a terrific opportunity Thomas. I wish I could attend. Perhaps an article in Meteorite Magazine highlighting some of the lectures might be something that many of us on the List would benefit from. Thanks. Jerry Flaherty - Original Message - From: Thomas Kurtz [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 5:35 PM Subject: [meteorite-list] Paneth-meteorite kolloqium 29.-31 October 2008 inRies-crater Dear Meteorite friends, end of October (29.-30.) 2008, there will be a lot of interesting meteorite-lectures in the Ries-crater in Germany. (all will be in english) When you ever planned to visit the crater, this will be an interesting opportunity to register for the colloqium too. 80 participants registered already. The Paneth-Kolloquium is a small European meeting that brings together students and researchers from different fields of cosmochemistry, planetology and astrophysics. All information about the Paneth-Kolloquium 2008, registration and registration fee, abstract submission as well as accommodation is available at http://www.kosmochemie.de/ Deadline for late registration: October 15 Deadline for abstract submission: September 30 Everybody from the list, who will register, please let me know, because I´m living since 2007 in the Ries-crater and could give you some support. With best wishes from Germany, Thomas -- Pt! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Google too
By KENNETH CHANG The lopsided shape of Mars may well be the result of a cataclysmic impact of a Pluto-size meteor billions of years ago, three teams of scientists are reporting. New theory on the two faces of Mars: gigantic solar collision San Francisco Chronicle Scientists think Mars took a punch that made it two-faced USA Today BBC News - The Associated Press - Scientific American - National Geographic all 163 news articles » Jerry Flaherty __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Paneth-meteorite kolloqium 29.-31 October 2008 inRies-crater
Hello Thomas: An article in Meteorite magazine sounds good to me. Does not need to be long or techncal. Larry PS Thomas, please let me know if you get this. Our University system is not allowing me to email to you for some reason. Jerry, can you forward this to Thomas, just in case? Thnx On Wed, June 25, 2008 6:36 pm, Jerry wrote: Sounds like a terrific opportunity Thomas. I wish I could attend. Perhaps an article in Meteorite Magazine highlighting some of the lectures might be something that many of us on the List would benefit from. Thanks. Jerry Flaherty - Original Message - From: Thomas Kurtz [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, June 25, 2008 5:35 PM Subject: [meteorite-list] Paneth-meteorite kolloqium 29.-31 October 2008 inRies-crater Dear Meteorite friends, end of October (29.-30.) 2008, there will be a lot of interesting meteorite-lectures in the Ries-crater in Germany. (all will be in english) When you ever planned to visit the crater, this will be an interesting opportunity to register for the colloqium too. 80 participants registered already. The Paneth-Kolloquium is a small European meeting that brings together students and researchers from different fields of cosmochemistry, planetology and astrophysics. All information about the Paneth-Kolloquium 2008, registration and registration fee, abstract submission as well as accommodation is available at http://www.kosmochemie.de/ Deadline for late registration: October 15 Deadline for abstract submission: September 30 Everybody from the list, who will register, please let me know, because I´m living since 2007 in the Ries-crater and could give you some support. With best wishes from Germany, Thomas -- Pt! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Santa Fe, NM Impact Crater Latitude and Longitude
Thank you everyone for responding to my question regarding the newly discovered Santa Fe impact structure. If I ever fly over the area, I will post my pictures of the crater. Thanks again Chuck http://www.ottawa.rasc.ca/articles/odale_chuck/earth_craters/index.html __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dr. Jeffrey N. Grossman Chondrule paper in Science
Hi list, I just read Jeff's paper on chondrule and chondrite formation. I'm still trying to get my brain around some of the points. Well done!!! A whole new way of looking at everything! I had a question related to the paper but just a little off topic. It is directed to Jeff but any one with knowledge in this area should jump in. The many structures found in chondrules, are they formed during the condensation process at formation or later during subsequent heating and shock events? Perhaps both? I often see structures within chondrules that give the appearance (at least) of having grown out of chemical reactions within the chondrule. Structures that I can not imagine shock forces having caused. Tom Phillips In a message dated 6/25/2008 7:27:00 A.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Hi Jeff, Congratulations on the cover story in Science on formation conditions of chondrules. Your color photograph of a Semarkona cross section is fabulous. Cheers, Jim Baxter I think it is fairly clear that the glass in chondrites, which forms in chondrules because of their rapid cooling from a partially molten state, is stable on the time-scale of the age of the solar system. In the most primitive chondrites, the ones unaffected by reheating or alteration on asteroids, the glass is preserved in pristine condition to this day. In metamorphosed chondrites, glass may survive in protected areas of type 3.9-4 material, but the reheating caused most of the glass to crystallize into feldspar early in solar system history. In aqueously altered chondrites, like CMs, the glass was mostly replaced by phyllosilicates and other phases due to the chemical action of water on the asteroid. Water is apparently a key ingredient in devitrifying silicate glasses, especially important in earth rocks. The image on Tom's website is almost certainly one of dendrites (probably olivine) in what was once glass. These dendrites were the result of rapid crystallization during cooling of a chondrule melt. Because this is a metamorphosed chondrite, the glass is now most likely replaced by fine-grained feldspathic material. Jeff At 12:24 AM 6/25/2008, [EMAIL PROTECTED] wrote: Hi, Several years ago I ran onto an unusual chondrule in JaH 055 that looks like glass but it is forming in crystals. I have had various explanations presented to me and all involved Glass This might be On topic? If any one is up to taking a look and sharing their observations, I would greatly appreciate it. Just go to my Meteorite Times Micrograph Gallery http://www.meteorite.com/meteorite-gallery/meteorites-alpha_frame.htm and select alphabetical sorting, JaH 055, and then crystal structure. These shots were produced using incident (reflected light). Thanks, Tom Phillips In a message dated 6/24/2008 10:02:55 P.M. Mountain Daylight Time, [EMAIL PROTECTED] writes: Have any studies been done on decay of glasses in meteorites into crystaline configurations? Is there a mesurable rate, or does it not happen? This story brought that to mind-- if impact-generated glasses in meteorites HAVE NOT decayed into crystaline material in 4 billion years, it's fairly good evidence that it won't happen in billions of years, as the story speculates. Dr. Jeffrey N. Grossman phone: (703) 648-6184 US Geological Survey fax: (703) 648-6383 954 National Center Reston, VA 20192, USA __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list **Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut000507) __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Traces of Catastrophe-- A Handbook of Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures
http://www.scribd.com/doc/2945478/Traces-of-Catastrophe You have to (painlessly) regester to download it. I had a difficult time downloading it-- Acrobat kept timing out in Mozilla, finally managed to download it through IE. I'd share it on my web space, but it is slightly too large to fit. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] The Fire Came By (Tungska)
I still remember finding (and reading) this book in my school library back when I was in primary school back in the late 70's early 80's: http://www.scribd.com/doc/3188210/-The-Fire-Came-By- __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
