RE: [meteorite-list] rust eh eh :)
Hi Moser, Better to use a lower temperature for a longer period of time than get it too hot too quick, it takes time for moisture to percolate out of all the pores in the material. I would think 100 degrees is a bit high. If you get them too hot, you may start to alter the metals properties, at high temperatures metal will start to oxidize and eventually you might eventually destroy the widmanstatten structure). Btw, don't use a gas oven, as gas releases lots of water when it burns, so it's best to use some form of 'electric' drying oven. And your right, oil/grease is best applied while still slightly warm so that the water doesn't get chance to re-condense. Btw IMHO, The best solvent to use is anhydrous ethanol (alcohol) since this absorbs water, it helps in drying them out.. Best Mark Ford -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Moser Francesco Sent: Thursday, October 20, 2005 10:19 PM To: ZZ ML Meteorite-List Subject: [meteorite-list] rust eh eh :) Hi All, yes you read well RUST, where?? on my Campo of course :)) I remove the rust with a steel brush after I use a metallic bruch with alcohol, I don't know the correct english name for the type of product, it is used like diluent for the syntetic painting. (butilic alcohol + toluene + acetone). After I put on the meteorite a lot of a silicon grease, with my Canyon Diablo work very well, no rust for 1 year. But I think is better to heat the Campo before apply the grease so the water will kick out. Anyone have an idea about the temperature and the time for a 1.5Kg Campo?? I think 80 - 100 °C for 3h can be fine, for you?? Thanks from me and my Campo. Ciao Francesco Moser http://web.tiscali.it/francesco.moser/ IMCA #1510 www.imca.cc There's just one kind of man that you can trust, that's a dead man, or an IMCA like me. __ 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] rust eh eh :)
so it's best to use some form of 'electric' drying oven I think to use an old electric grill just over a pot with inside the meteorite, all between 4 refractory brick. I will try with 70-80°C for 5h. My mother don't let me use the home oven :-) anhydrous ethanol I think is hard to find pure (96%). The solvent I used contains a lot of different alcohol. oil/grease is best applied while still slightly warm The grease that I use is stable from -30 to 230°C so the temperature isn't a trouble. If the meteorite is warm the pores and the cracks are open so the hot grase can go inside the meteorite and block the water at the best. In a store I found a product that convert the rust and the surface in a phosphate iron compound, but on the box there's write the surface become bluish like the tipical metal used for the reed (cane) of the rifle and the gun. The phosphate is very hard and stable. Can be interesting but I haven't an ugly meteorite for try. The product works on iron and steel but I don't know if it works on the iron minerals of the meteorite. Thanks, I will let you know about the results. Francesco Moser http://web.tiscali.it/francesco.moser/ IMCA #1510 www.imca.cc There's just one kind of man that you can trust, that's a dead man, or an IMCA like me. - Original Message - From: mark ford [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, October 21, 2005 9:50 AM Subject: RE: [meteorite-list] rust eh eh :) Hi Moser, Better to use a lower temperature for a longer period of time than get it too hot too quick, it takes time for moisture to percolate out of all the pores in the material. I would think 100 degrees is a bit high. If you get them too hot, you may start to alter the metals properties, at high temperatures metal will start to oxidize and eventually you might eventually destroy the widmanstatten structure). Btw, don't use a gas oven, as gas releases lots of water when it burns, so it's best to use some form of 'electric' drying oven. And your right, oil/grease is best applied while still slightly warm so that the water doesn't get chance to re-condense. Btw IMHO, The best solvent to use is anhydrous ethanol (alcohol) since this absorbs water, it helps in drying them out.. Best Mark Ford -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Moser Francesco Sent: Thursday, October 20, 2005 10:19 PM To: ZZ ML Meteorite-List Subject: [meteorite-list] rust eh eh :) Hi All, yes you read well RUST, where?? on my Campo of course :)) I remove the rust with a steel brush after I use a metallic bruch with alcohol, I don't know the correct english name for the type of product, it is used like diluent for the syntetic painting. (butilic alcohol + toluene + acetone). After I put on the meteorite a lot of a silicon grease, with my Canyon Diablo work very well, no rust for 1 year. But I think is better to heat the Campo before apply the grease so the water will kick out. Anyone have an idea about the temperature and the time for a 1.5Kg Campo?? I think 80 - 100 °C for 3h can be fine, for you?? Thanks from me and my Campo. Ciao Francesco Moser http://web.tiscali.it/francesco.moser/ IMCA #1510 www.imca.cc There's just one kind of man that you can trust, that's a dead man, or an IMCA like me. __ 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
Re: [meteorite-list] rust eh eh :)
so it's best to use some form of 'electric' drying oven I think to use an old electric grill just over a pot with inside the meteorite, all between 4 refractory brick. I will try with 70-80°C for 5h. My mother don't let me use the home oven :-) I also use old electric chicked grill. But I use auto off timer. Usually I use 15min heat for slices and smaller specimens. Occasionaly 30min. For +kilo specimens I think 1 hour is enough. anhydrous ethanol I think is hard to find pure (96%). The solvent I used contains a lot of different alcohol. Do not waste good alcohol for meteorites. :D Use Methanol. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re: Ambrose (Thuathe) catalogue
Hello list, I'm looking for a copy or scan of the David Ambrose (National University of Lesotho) catalogue - a record of recovered Thuathe meteorites, showing the mass, dimensions, place found, finder's name, description, etc. of each meteorite. Best Regards Peter Marmet __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Odyssey THEMIS Images: October 17-21, 2005
MARS ODYSSEY THEMIS IMAGES October 17-21, 2005 o Iani Chaos (Released 17 October 2005) http://themis.la.asu.edu/zoom-20051017a o Dunes on plains (Released 18 October 2005) http://themis.la.asu.edu/zoom-20051018a o Dust Devil Tracks (Released 19 October 2005) http://themis.la.asu.edu/zoom-20051019a o Syrtis Major Windstreaks (Released 20 October 2005) http://themis.la.asu.edu/zoom-20051020a o Lava Flows (Released 21 October 2005) http://themis.la.asu.edu/zoom-20051021a All of the THEMIS images are archived here: http://themis.la.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 collaboration 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] A Temperature Map of Comet Tempel 1
http://deepimpact.jpl.nasa.gov/gallery/Temperature_Map.html A Temperature Map of Tempel 1 Deep Impact Project [Temperature Map Image] A temperature map of the nucleus with different spatial resolutions. The context image (in black and white) is a HRIVIS image taken just before impact. The color bar in the middle gives temperature in Kelvins. The sun is to the right in all images. These data were acquired with the IR spectrometer using signal between 1.8 and 2.2 µm and modeled to contain both a reflected and an emitted component. After this model is applied, the resulting number is a temperature which is represented by different colors with red being the highest and purple the coldest. The derived temperature varies from 260 +/- 6 K to 329 +/- 8K. Shadows are the coolest temperatures, and the point directly below the sun is hottest. These temperatures indicate that the thermal inertia of the surface (the quality of the surface describing the ability to conduct and store heat) is low. In other words, on Tempel 1, it is hot in the sun and cold in the shadows. A value for thermal inertia is estimated at 100 W/K/m2/s1/2. Photo Credit: NASA/JPL/UMD and from ScienceExpress __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Allende
HI This is not fair I know. But I will do it anyway.. and may condemm me if you wish... Does anyone have a (quite)large Allende individual for,sale that they are willing to make a special deal with me I can pay.. but only over some time. Please contact me offline. :-) Lars __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - Rare italian newspaper with cover of a meteorite fall
Hello here its the auction http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=6572061352 its a rare italian newspaper with a cover where its rappresented a meteorite fall Matteo M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30030 - 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/ ___ Yahoo! Messenger: chiamate gratuite in tutto il mondo http://it.messenger.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
RE: [meteorite-list] Allende
ha! ha! ha! From: Lars Pedersen [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] Allende Date: Fri, 21 Oct 2005 19:28:52 +0200 HI This is not fair I know. But I will do it anyway.. and may condemm me if you wish... Does anyone have a (quite)large Allende individual for,sale that they are willing to make a special deal with me I can pay.. but only over some time. Please contact me offline. :-) Lars __ 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-2: [meteorite-list] Allende
Sincere, humble apology, Lars, I've been made aware of your situation. (How could I have known?) I would help, if I could. Pete Hi Lars, Pete, and List, Pete, my hat (though I never wear hats) is off to you for your prompt and immediate apology! I would help, if I could. Pete You can, we can. If, and I suppose, the person who made you aware of Lars' situation, is the one I am thinking of, well, if (s)he is willing to coordinate donations again, and there are more than 500 list members, .. I would be willing to donate $10 for an appreciable Allende slice. Appreciable ... ? 500 x 10 = $5,000. This would be one big slice for Lars, bigger than any Allende I own. Even if only 100 list members were willing to donate, say $5.00 or $2.00, the slice, Lars would get would still be something out of this world. Any comments? No, no comments, please! Donate or don't. Christmas is ante portas ;-) Lars, you just overlook this mail, will, you! And if the person who made Pete aware of Lars' situation is out there, (s)he will surely let you know in private how to contact him/her. Best regards, Bernd Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Obituary: Alastair G.W. Cameron, Noted Astrophysicist and Space Scientist
OBITUARY: ALASTAIR G.W. CAMERON, NOTED ASTROPHYSICIST AND SPACE SCIENTIST From UA Office of University Communications, 520-621-1877 October 21, 2005 -- Contacts for more information are listed at the end of this release -- Alastair G.W. (Graham Walter) Cameron, 80, one of the great astrophysicists of the 20th century, died of heart failure in Tucson, Ariz., on Oct. 3. Cameron, was born June 21, 1925, in Winnipeg, Manitoba. He sought to unlock the fundamental mysteries of the universe, the stars and the solar system. His public service influenced the course of the U.S. planetary exploration program over the past few decades. Cameron did fundamental research in astrophysics, planetary sciences, and meteoritics. He was among the first to develop the theory of nucleosynthesis the production of the chemical elements in stars and to advocate that the formation of the moon resulted from a giant impact on the early Earth by an object at least the size of Mars. Cameron was a scholar, researcher, advisor, editor and distinguished member and fellow of many prestigious and leading scientific organizations and associations. He was a member of the U.S. National Academy of Sciences and a fellow of the American Academy of Arts and Sciences and of the Royal Society of Canada. Cameron was also a fellow of the American Association for the Advancement of Science, the Meteoritical Society, and the American Geophysical Union. Among his many advisory roles, Cameron said his most important was as chairman of the Space Science Board of the National Academy of Sciences from 1976 to 1982. He spent 26 years of his academic career at Harvard University beginning in 1973 as associate director for planetary sciences at the Harvard-Smithsonian Center for Astrophysics and, later, as head of Harvard's astronomy department. He was named professor emeritus at Harvard University and appointed the Donald H. Menzel Research Professor of Astrophysics in 1999, a position he held at the time of his death. At the time of his death he was also a senior research scientist in the Lunar and Planetary Laboratory at The University of Arizona. He was a member of the Arizona Senior Academy in Tucson, which is a non-profit organization devoted to life-long learning, thinking and doing. Cameron's research interests included nucleosynthesis and associated areas of nuclear physics, stellar evolution, supernova explosions, neutron stars, star and planet formation, physics of planets and planetary atmospheres. He considered the main objective of his scientific research was to understand the structures and origins of astronomical objects and systems. As I look back on the account of my research career, I am struck by how fortunate I have been in the timing of my research opportunities. My training was in nuclear physics, and the field of nuclear astrophysics opened up just at the right time for me, he said in Adventures in Cosmogony, a retrospective of his career as he approached his retirement published in 1999. He became a leader and innovator in the application of emerging computer technology for solving astrophysics problems. He was a champion for academic freedom and a proponent for government funding to support basic research as a means to further technical development and applied research in many areas of knowledge, including the sciences. Among his many awards and medals of recognition for his contribution to the sciences was the R.M. Petrie Prize Lecture Award from the Canadian Astronomical Society in 1970, the NASA Distinguished Public Service Medal, awarded in 1983, the J. Lawrence Smith Medal from the National Academy of Sciences in 1988, the Harry H. Hess Medal from the American Geophysical Union in 1989, the Leonard Medal from the Meteoritical Society for his outstanding contributions to the science of meteoritics in 1994, and the Russell Lecturer prize from the American Astronomical Society, awarded to him in 1997 for a lifetime of preeminence in astronomical research. Five days before his death, Cameron was notified that he had also been named the 2006 recipient of the Hans A. Bethe prize from the Division of Nuclear Physics of the American Physical Society for his pioneering work in developing the fundamental concepts of nuclear astrophysics. These basic ideas, laid out almost 50 years ago, are still the basis of current research in this field, the society said. His numerous published works spanned decades. His last research article, Some Nucleosynthesis Effects Associated with R-Process Jets, was published in 2003 in the Astrophysical Journal. Cameron began his career as an undergraduate at the University of Manitoba, Canada, during the final years of World War II. Later he earned a doctorate in nuclear physics at the University of Saskatchewan, with renowned Canadian physicist Leon Katz as his thesis advisor. In
[meteorite-list] Meteorites carved by the Inca?
Anyone know more details about these meteorites that the Incas had carved on? I've found mention of meteorites found in Inca tombs, but no mention of carvings. http://www.theunion.com/article/20051019/NEWS/51019001 Worker laments loss of history The way Alex Mendibles figures it, a lot of history went up in flames when the family business was burned out in Auburn's Old Town Tuesday. The American River Mercantile Building which housed the family's American River Traders store and several others, was built in the 1850s and embodies the Old West. It was filled with artifacts from all over the world. We had an Iroquois chief's hat from the 1700s, Mandibles said. There was a bonnet from the 1800s, from the shop that specializes in Native American Indian products and artifacts but also sells things from around the world. There was lots of old stuff that museums would die for, Mandibles said. We had stuff from China and Africa and the Amazon and we traveled to the countries to get it. There was also a black rhino shield from Mongolia and meteorites that the Incas had carved on. It's gone, there's nothing there anymore, Mandibles said. We can rebuild it, we will survive. Mandibles said family members help out with the store periodically but it is owned by his cousin, Lisa Railsback. She's in shock, he said. Nobody's hurt, that's the important thing, Mandibles said. It's a complete loss. To contact senior staff writer Dave Moller, e-mail [EMAIL PROTECTED] or call 530-477-4237. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Photos of angrite thin sections
Hello all members of the list, I need good quality photos of thin sections in anyangrite meteorite. These photos will help me a lot to identify a new angrite from the sahara. Please send any available photos to the following e-mail: [EMAIL PROTECTED] Thank youfor your help. Best regards. Shams __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
