Other
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000lpico.997...57m&link_type=abstract
Workshop on Extraterrestrial Materials from Cold and Hot Deserts, p. 57
Other
3
Gas Composition, Meteorites, Cosmic Rays, Cosmology, Shergottites, Carbonates, Metamorphism (Geology), Snc Meteorites, Deserts, Crystallization, Weathering
Scientific paper
Dar al Gani 476 is the first Martian meteorite to be identified from the Libyan Sahara. It mostly consists of pyroxenes, feldspathic glass, olivine, and also about a few percent of carbonate of certain terrestrial weathering origin. Based on the petrographic and chemical characteristics, it has recently been classified as a basaltic Shergottite. The meteorite appears highly fractured and shows effects of metamorphism under a shock pressure in the range of 40 to 50 GPa. A crystallization age of about 800 Ma, cosmic ray exposure age of 1.2 Ma and terrestrial age of >32 Ka are reported for DaG476. We received two subsamples, one from the surface (approx. 110 mg) and another from the interior (approx..500 mg) from Dr. Zipfel (MPIC, Mainz) for the investigation of cosmogenic records and trapped gas composition.
Mohapatra Ranjita K.
Murty Sripada V. S.
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