[meteorite-list] Calcalong Creek sample needed for research
Dear all, For research purposes we are looking for a tiny chip from the interior of the Calcalong Creek lunar meteorite. Please drop me an email off list if you think you may be able to provide this. Cheers, Romain -- Romain Tartèse Post Doctoral Research Associate Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) Muséum National d'Histoire Naturelle Laboratoire de Minéralogie, 61 rue Buffon 75005 Paris - France +447490868677 --- http://sites.google.com/site/romaintartese/__ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Calcalong Creek
Hello Steve, here the well known story of Calcalong Creek (can be found on Rob Elliott's page of Fernlea meteorites) Calcalong Creek (Wiluna District,Western Australia) Lunar, impact melt breccia Found after 1960, recognised 1990: Total known weight 19g It's the only lunar meteorite to have a name instead of a number, it's the first non-Antarctic lunarite to be discovered and just look at the incredibly low total known weight! Calcalong Creek is also the best known of all the moon rocks and is likely to remain so, with it's name now firmly in the meteoritical history books. Calcalong Creek is an impact melt breccia, calculated from the bulk analysis as: 50% anorthosite, 20% KREEP, 15% Sc-Cr-V and 15% low-Ti mare basalt - a material found during the Luna 16 mission on the surface of the Moon. The small 100% fusion crusted rock was probably collected by an Aboriginal meteorite hunter while searching for specimens of the Millbillillie eucrite meteorite fall of October 1960. Gold prospector Harry Redford visited the Wiluna area and found a few dozen Millbillillie eucrites but he was alone and it was hard going, so he enlisted the help of the local Aborigines by offering rewards for all Millbillillies recovered. With an army of eagre hunters working with him, Redford recovered hundreds of Millbillillies which he later sold to the "Meteorite Man".Tucson's Robert Haag. While picking through the many Millbillillie stones, Haag examined each one carefully and came across a small, completely fusion crusted 19g stone "that felt different", so he put it aside to examine later. When he re-examined the stone again, Haag noticed small gas vesicules on the fusion crust, a rare texture previously seen on only a few other meteorites. The fusion crust also had a slight greenish tinge which separated it from the glossy black fusion crusted Millbillillie stones. He ground a small corner off and noticed small while clasts that he'd seen before in photographs of moon rocks. Haag took the small stone for expert analysis and received the following report from W.Boynton and D.Hill at the University of Arizona Lunar and Planetary Lab. "We have analysed the new meteorite by neutron activation analysis and believe it to be of lunar origin based on comparison with other meteorites and samples returned from Apollo landing sites" It was official - Robert Haag had discovered the first ever lunar meteorite found outside of Antarctica!! Haag donated about 6g to science and retained the remainder in his own magnificent meteorite collection. Meteorite hunters have since found a comparatively small amount more lunar material while scouring the Sahara Desert but Calcalong Creek remains the most highly prized of all. It contains both Lunar Highland AND Mare regions and has the highest known concentration of all KREEP rare earth elements out of all known lunar material. including Apollo return samples!! Couretesy of the Department of Earth and Planetary Sciences, Washington University in St.Louis comes the following extract: "The Calcalong Creek meteorite is the first lunar meteorite to be found outside of Antarctica. Compositionally, it is unique among lunar meteorites in having high concentrations of incompatible trace elements, which indicates that it probably came from the Procellarum region of the Moon." http://epsc.wustl.edu/admin/resources/meteorites/calcalong.html Peter Marmet
[meteorite-list] Calcalong Creek
Peter Marmet wrote: It's the only lunar meteorite to have a name instead of a number Hello Steve, Peter and List! Peter, you are not quite right ;-) There is another, albeit very small one, the famous Hadley Rille, EH, recovered by Apollo 15 astronauts at Station 9, near Hadley Rille. This tiny specimen contains euhedral and acicular enstatite grains + kamacite globules. It was significantly impact melted when it accreted to the lunar regolith (see Met.Bull. 81, 1997, A160). And, last but not least, there is Bench Crater (CM1-like matrix) brought back to Earth from the moon by the Apollo 12 astronauts. There is only a single fragment 3mm x 1.5 mm in a thin section of rock fragments and List member Allan Treiman says it is the only rock from on the moon that contains water-bearing minerals. Best regards, Bernd __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Calcalong Creek
Bernd and list: Bench Crater Hadley Rille are not lunar meteorites. See the only published paper on this subject, and a fine one at that! Rubin A.E. and Grossman J. N., 1998, What is a meteorite? The pursuit of a comprehensive definition. Meteorite!, v.4 no. 3, 24-25. The adjective indicates the point of origin, not the body that the meteorite fell on. Like most meteorites that fall on earth, these two are asteroidal meteorites. jeff At 10:15 AM 1/15/2003, Bernd Pauli HD wrote: Peter Marmet wrote: It's the only lunar meteorite to have a name instead of a number Hello Steve, Peter and List! Peter, you are not quite right ;-) There is another, albeit very small one, the famous Hadley Rille, EH, recovered by Apollo 15 astronauts at Station 9, near Hadley Rille. This tiny specimen contains euhedral and acicular enstatite grains + kamacite globules. It was significantly impact melted when it accreted to the lunar regolith (see Met.Bull. 81, 1997, A160). And, last but not least, there is Bench Crater (CM1-like matrix) brought back to Earth from the moon by the Apollo 12 astronauts. There is only a single fragment 3mm x 1.5 mm in a thin section of rock fragments and List member Allan Treiman says it is the only rock from on the moon that contains water-bearing minerals. Best regards, Bernd __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list Dr. Jeffrey N. Grossman phone: (703) 648-6184 US Geological Survey fax: (703) 648-6383 954 National Center Reston, VA 20192, USA
