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Northwest Africa 13902 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13902 This is an OFFICIAL meteorite name. Abbreviation: NWA 13902 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 8.74 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 520 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 May 2021 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13902 (NWA 13902) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Diogenite) History: Reportedly found in the border area between Algeria and Mali in July 2020. Purchased from Ali Hnini. Physical characteristics: Three identically appearing stones (8 kg, 238.4 g, 50 0g) found together. All stones have fusion crust. Saw-cut surfaces reveal coarse dark gray-blue grains set in an orange-brown groundmass. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows fragmental breccia with ~95% orthopyroxene. Accessory phases are troilite, chromite, and iron oxide. No olivine or plagioclase was detected. Geochemistry: (C. Agee, UNM) Low-Ca pyroxene Fs25.8±1.5Wo1.6±0.2, Fe/Mn=28±1, n=12. Classification: HED diogenite Specimens: 22.2 g on deposit at UNM, Matthew Stream holds the 238.4 g and 500 g stones, the main mass is held by a Mauritanian meteorite dealer. | ||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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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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