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Northwest Africa 7659 | |||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7659 This is an OFFICIAL meteorite name. Abbreviation: NWA 7659 Observed fall: No Year found: 2011 Country: Morocco Mass: 296 g | ||||||||||||||||||||||||||
Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||
Comments: | Approved 28 Jan 2013 | ||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7659 (NWA 7659) Morocco Purchased: 2011 Classification: Ordinary chondrite (H4) History: Purchased by David Robinson from Sean Tutorow in December 2011. Physical characteristics: Single stone, weathered rough exterior, saw cut reveals many small chondrules and metal set in a dark gray groundmass. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows many distinct BO, PO, and POP chondrules, some with mesostasis. Troilite and taenite present, ~50% of metal is oxidized, numerous weathering veins. Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa21.2±0.5, Fe/Mn=42±2, n=10; low-Ca pyroxene Fs12.5±4.5Wo0.6±0.3, Fe/Mn=22±5, n=10. Classification: Ordinary chondrite (H4), weathering grade W3. Specimens: 21.9 g including a probe mount on deposit at UNM, Sean Tutorow holds 50 g, David Robinson 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) | ||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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