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Northwest Africa 11899 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11899 This is an OFFICIAL meteorite name. Abbreviation: NWA 11899 Observed fall: No Year found: 2017 Country: Mali Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 432 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||||||||||
Comments: | Approved 31 Aug 2018 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 11899 (NWA 11899) Mali Purchased: 2017 Classification: HED achondrite (Howardite) History: Purchased by Dustin Dickens from Nomad in Mali. Physical characteristics: Many identically appearing pieces. Fusion crusted exterior. A saw cut reveals a breccia with light and dark clasts set in light-brown matrix. Petrography: (C. Agee, UNM) This meteorite is a polymict breccia consisting of approximately 60% diogenite and 40% eucrite clasts. Accessory Fe-Ni metal, Fe-sulfide, and silica observed. Geochemistry: (C. Agee, UNM) diogenite low-Ca pyroxene Fs25.1±2.5Wo3.6±2.2, Fe/Mn=30±2, n=10; eucrite low-Ca pyroxene Fs49.7±5.2Wo4.8±2.8, Fe/Mn=29±2, n=7;.plagioclase AN93.1±1.2, n=7. Classification: Howardite Specimens: 22.8 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB107 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 Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography:![]() |
Statistics: This is 1 of 85 approved meteorites from Mali (plus 2 unapproved names) |