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Northwest Africa 8548 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8548 This is an OFFICIAL meteorite name. Abbreviation: NWA 8548 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 245 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 16 approved meteorites classified as Achondrite-prim. [show all] Search for other: Primitive achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 18 Oct 2014 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8548 (NWA 8548) (Northwest Africa) Purchased: 2013 Classification: Primitive achondrite History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, April, 2013. Physical characteristics: Single stone, partially black fusion-crusted, dark green exterior patina. Saw cut reveals fine grained metal/sulfide set in a gray crystalline silicate groundmass. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows ~60% olivine and ~40% pyroxene forming a recrystallized porphyroblastic to poikiloblastic texture, some domains are clastic to brecciated, some domains look like relict chondrules, minor plagioclase grains ~20 μm, FeNi metal, sulfide, and chromite throughout. Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa38.0±0.4, Fe/Mn=95±5, n=8; low-Ca pyroxene Fs30.2±0.2Wo3.4±0.1, Fe/Mn=59±2, n=10; plagioclase An50.3±1.3Ab48.4±1.6Or1.3±0.3, n=5. Classification: Primitive achondrite (ungrouped), probably paired with NWA 6901, NWA 3250, and NWA 2994. Specimens: 20.6 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB103 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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Photos: |
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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: |
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