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Northwest Africa 12890 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12890 This is an OFFICIAL meteorite name. Abbreviation: NWA 12890 Observed fall: No Year found: 2005 Country: (Northwest Africa) Mass: 1980 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 7 Sep 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12890 (NWA 12890) (Northwest Africa) Purchased: 2005 Classification: Ordinary chondrite (H4) History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by PSF, then sold in 2019 to the Harkness Collection. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU; T. Bunch and J. Wittke, NAU) Well-formed, relatively small chondrules are set in a relatively coarse grained matrix containing abundant altered metal. Geochemistry: Olivine (Fa18.6±0.7 (range Fa18.1-19.5, N = 4), low-Ca pyroxene (Fs16.5±0.2Wo0.5±0.3 (range Fs16.2-16.6Wo0.7-0.2, N = 3). Classification: Ordinary chondrite (H4). Specimens: 47.02 g including one polished thin section at PSF; remainder in Harkness Collection. | ||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
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Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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