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Northwest Africa 7551 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7551 This is an OFFICIAL meteorite name. Abbreviation: NWA 7551 Observed fall: No Year found: 2012 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 May 2013 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7551 (NWA 7551) Morocco Purchased: 2012 Classification: HED achondrite (Eucrite, monomict) Physical characteristics: Moderately well-preserved fusion crust that covers ~65 % of the surface. Petrography: Partially crushed cataclastic cumulate eucrite breccia with protogranular texture of equal amounts of pyroxenes, and plagioclase with minor FeS, chromite, and silica. Geochemistry: Pigeonite, Fs54.5Wo13.2 (FeO/MnO = 41); augite Fs34.3Wo41.4; plagioclase, An90.2; chromite Cr/(Cr+Al) = 0.80. Classification: Achondrite (eucrite, monomict) Specimens: 21.9 g are at PSF; DGregory holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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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) DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address) |
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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 1929 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater) |