Name: Graves Nunataks 12512 This is an OFFICIAL meteorite name. Abbreviation: GRA 12512 Observed fall: No Year found: 2012 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 21.6 g
The exterior is covered with fractured, brown/black fusion crust. Exposed areas are pitted and weathered a rusty brown color. The interior is a dark gray to black matrix with abundant inclusions of various sizes; most are white or rusty in color. Some oxidation and rusty areas are visible.
Thin Section Description (,2) - Cari Corrigan and Linda Welzenbach
The section consists of abundant small (up to 1 mm) chondrules, chondrule fragments and has mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Olivine ranges in composition from Fa1-74, with a continuous range of intermediate compositions and a slight peak at Fa1-5. One pyroxene analysis is Fs1Wo3. The matrix appears to consist largely of Fe-rich olivine. The meteorite is a CO3 chondrite.
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013) 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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