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Northwest Africa 7549 | |||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7549 This is an OFFICIAL meteorite name. Abbreviation: NWA 7549 Observed fall: No Year found: 2012 Country: (Northwest Africa) 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 7549 (NWA 7549) Northwest Africa Purchased: 2012 Classification: HED achondrite (Eucrite, monomict) Physical characteristics: Very fresh fusion crust with light-gray interior. Petrography: Monomict subophitic basaltic breccia with thin glassy shock-melt veins interstial to mostly cm-size breccia fragments. This stone contains orthopyroxene, augite, chromite, metal, silica, and FeS. Geochemistry: Orthopyroxene, Fs55.2Wo4.5; augite, Fs30.1Wo42; plagioclase, An90.4; chromite Cr/[Cr +Al] = 0.78. Classification: Achondrite (eucrite, monomict) Specimens: A total of 13 g are on deposit at PSF, the main mass is held by D. DGregory | ||||||||||||||||||||||||||
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 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |