Name: Miller Range 11290 This is an OFFICIAL meteorite name. Abbreviation: MIL 11290 Observed fall: No Year found: 2011 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 327 g
95% of the exterior of this achondrite has jet black fusion crust, glassy and minor rust in areas. The interior matrix is gray with white inclusions, and some minor oxidation.
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach, Pamela Salyer
This meteorite is dominated by coarse-grained basaltic material. Feldspar laths are up to 1.5 mm. Pyroxene grains are also up to 1.5 mm. One finer-grained clast exists, with grain sizes up to 0.5 mm (also pyroxene and feldspar). Mineral compositions are orthopyroxene (Fs59-67Wo3-5), with lamellae of augite (Fs50Wo20, although lamellae were too small to get pure end-member compositions), and plagioclase (An78-85Or0.8-1.7). One olivine analysis was Fa80. The Fe/Mn ratio of the pyroxene is 29-34. The meteorite is a eucrite.
JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022) SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
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