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Northwest Africa 12210 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12210 This is an OFFICIAL meteorite name. Abbreviation: NWA 12210 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 151 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 318 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 12 Nov 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 12210 (NWA 12210) (Northwest Africa) Purchased: 2018 Jun Classification: Martian meteorite (Shergottite) History: Purchased by Ben Hoefnagels in June 2018 from a dealer in Zagora, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Poikilitic texture. Large pyroxene oikocrysts (up to 6 mm across) enclose olivine chadacrysts, and are set in a relatively coarse grained groundmass containing olivine, pyroxenes, lath-like maskelynite, abundant phosphates (both merrillite and chlorapatite), Ti-poor chromite and pyrrhotite. Mafic silicates exhibit very limited compositional zoning. Cores of pyroxene oikocrysts are stained orange. Geochemistry: Olivine (Fa38.1-40.7, FeO/MnO = 49-51, N = 3), low-Ca pyroxene core (Fs24.7Wo4.1, FeO/MnO = 30), pigeonite (Fs26.4-30.8Wo11.0-7.5; Fs28.1Wo16.3; FeO/MnO = 25-29; N = 3), subcalcic augite (Fs16.8-18.5Wo33.7-36.6, FeO/MnO = 23-25, N = 2), maskleynite (An53.8-54.4Or2.1-2.2, N = 2). Classification: Martian (shergottite, poikilitic). Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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