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Northwest Africa 7138 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7138 This is an OFFICIAL meteorite name. Abbreviation: NWA 7138 Observed fall: No Year found: 2010 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 625 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 17 May 2012 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 100:
Northwest Africa 7138 (NWA 7138) Morocco Found: 2010 Classification: Carbonaceous chondrite (CM2) Petrography: Wide range of chondrule sizes up to 4 mm. Abundant (AOAs), matrix altered to physillocates. Geochemistry: Olivine Fa1.5-66.7, Fe/Mn=134, Cr2O3 = 0.22-0.42 wt.%; AOA olivine Fa1.5; plagioclase An87; diopside Fs2.1Wo50; metal Ni = 2.2 wt.%. Classification: Carbonaceous chondrite (CM2) | ||||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1653: |
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Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) Kuntz: Fabien Kuntz, France; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Photos: |
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Geography:![]() |
Statistics: This is 1 of 1991 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) |