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Northwest Africa 7867 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7867 This is an OFFICIAL meteorite name. Abbreviation: NWA 7867 Observed fall: No Year found: 2012 Country: Morocco Mass: 3.39 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 100 approved meteorites classified as LL7. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||
Comments: | Approved 27 May 2013 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7867 (NWA 7867) Morocco Purchased: 2012 Classification: Ordinary chondrite (LL7) History: Purchased by Aziz Habibi in Morocco, 2012. Physical characteristics: Single stone, weathered fusion crust, broken surface reveals scattered small clasts set in a fine-grained, friable, light-gray matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a brecciated, recrystallized chondrite, no chondrules present. Numerous equilibrated chondrite clasts from 500 μm to 2 mm set in a fine-grained cataclastic matrix. Three distinct LL lithologies identified based on texture and olivine Fa-content. Geochemistry: (C. Agee and L. Burkemper, UNM) Lithology-1: Fa30.6±0.5, Fe/Mn=61±3, n=17; low-Ca pyroxene Fs25.1±0.3Wo2.2±0.6, Fe/Mn=37±1, n=13; lithology-2: Fa32.5±0.3, Fe/Mn=65±3, n=8; low-Ca pyroxene Fs26.6±0.5Wo2.1±0.4, Fe/Mn=40±2, n=6; lithology-3: Fa29.2±0.5, Fe/Mn=60±2, n=5; low-Ca pyroxene Fs23.7±0.1Wo1.9±1.5, Fe/Mn=35±1, n=3. Classification: Ordinary chondrite (LL7), breccia, chondrules absent, weathering grade W1. Specimens: 33 g including a probe mount on deposit at UNM, Aziz Habibi holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB102 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. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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