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Northwest Africa 7494 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7494 This is an OFFICIAL meteorite name. Abbreviation: NWA 7494 Observed fall: No Year found: 2012 Country: Morocco Mass: 3.55 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 6826 approved meteorites (plus 6 unapproved names) classified as H6. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||
Comments: | Approved 18 Oct 2012 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 101:
Northwest Africa 7494 (NWA 7494) Morocco Purchased: Sept. 11, 2012 Classification: Ordinary chondrite (H6) History: Purchased by Reed in Denver, September 11, 2012. Physical characteristics: Single stone, dark weathered exterior, saw cut reveals very fine-grained metal and sulfide, and faint chondrules, set in a dark gray matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows an equilibrated chondrite texture with a few indistinct chondrules and plagioclase up to 200 microns. Abundant kamacite and troilite, metal is moderately oxidized. Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa19.0±0.4, Fe/Mn=38±1, n=4; low-Ca pyroxene Fs16.7±0.1Wo1.4±0.2, Fe/Mn=22±1. Classification: Ordinary chondrite (H6), weathering grade W2. Specimens: 29.7 g including a probe mount on deposit at UNM, Reed holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB101 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) Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, 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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