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Northwest Africa 8737 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8737 This is an OFFICIAL meteorite name. Abbreviation: NWA 8737 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 670 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 22 approved meteorites classified as CO3.0. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 5 Feb 2015 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 8737 (NWA 8737) (Northwest Africa) Purchased: 2014 Classification: Carbonaceous chondrite (CO3.0) History: Purchased by Aziz Habibi in Morocco, January 2014. Physical characteristics: Many identical appearing pieces with dark-brown exterior. A saw cut reveals very small chondrules and scattered small CAIs set in a dark brown matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous chondrules 5-250 μm (155±93 μm, n=64), fine-grained matrix makes up about 25% of this meteorite. Geochemistry: (C. Agee and N. Muttik, UNM) Olivine range Fa0.6-56.6, n=28. Type I chondrule olivine Fa1.0±0.3, n=14; ferroan chondrule olivine Fa31.3±16.0, Fe/Mn=83±31, Cr2O3=0.29±0.11 wt%, n=14; enstatite Fs2.2±1.7Wo1.7±1.3, n=26; aluminous diopside and Cl-apatite found. Classification: Carbonaceous chondrite (CO3.0) based on mean Cr2O3=0.29±0.11 wt% in ferroan olivines, values plotting close to Colony (CO3.0) as reported by Grossman and Brearley (2005). Specimens: 20.1 g including a probe mount on deposit at UNM, Aziz Habibi holds the main mass. | ||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB104 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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