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Northwest Africa 13905 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13905 This is an OFFICIAL meteorite name. Abbreviation: NWA 13905 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 2.2 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12727 approved meteorites (plus 11 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 10 Apr 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13905 (NWA 13905) (Northwest Africa) Purchased: 2020 Classification: Ordinary chondrite (L6) History: Purchased from Mostafa Hnini in December 2020. Physical characteristics: Twenty identically appearing stones found together. All stones have smooth sand blasted exterior surfaces. Saw-cut surfaces reveal light brown and gray grains, a few distinct chondrules, all of which are set in a dark gray groundmass. Distinct shock melt veins are clearly visible in polished cut-faces. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a few porphyritic and barred chondrules, the groundmass consists of recrystallized silicates, Fe,Ni-metal, and troilite. Plagioclase grains are up to ~200 μm in size. Geochemistry: (C. Agee, UNM) Olivine Fa24.1±0.3, Fe/Mn=47±2, n=8; low-Ca pyroxene Fs20.1±0.2Wo1.7±0.2, Fe/Mn=28±1, n=6. Classification: Ordinary chondrite L6 Specimens: 70.85 g on deposit at UNM, Matthew Stream holds the main mass. | ||||||||||||||||||||||||||||||
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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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