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Northwest Africa 13903 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13903 This is an OFFICIAL meteorite name. Abbreviation: NWA 13903 Observed fall: No Year found: 2021 Country: Algeria Mass: 1753 g | ||||||||||||||||||||||||||||||
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 13903 (NWA 13903) Algeria Purchased: 2021 Classification: HED achondrite (Diogenite) History: Purchased from Mostafa Hnini and Ali Mftah both Mauritanian meteorite dealers. Reportedly found in the border region between Algeria and Mali close to Erg Chech in 2020. Physical characteristics: Ten identically appearing stones found together. Partially fresh fusion crusted. 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 ~90% orthopyroxene. Accessory phases are olivine, troilite, chromite, and iron metal. No plagioclase was detected. Geochemistry: (C. Agee, UNM) Olivine Fa29.6±1.4, Fe/Mn=47±3, n=4; low-Ca pyroxene Fs24.6±2.0Wo1.4±0.1, Fe/Mn=26±1, n=8. Classification: HED diogenite (olivine-bearing) Specimens: 21 g on deposit at UNM, Matthew Stream holds the 1100 g, Ari Machiz holds 450 g. | ||||||||||||||||||||||||||||||
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 1336 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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