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Northwest Africa 7877 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7877 This is an OFFICIAL meteorite name. Abbreviation: NWA 7877 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 395 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 30 Sep 2013 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7877 (NWA 7877) (Northwest Africa) Purchased: 2012 Dec Classification: HED achondrite (Eucrite, polymict) History: Purchased by F. Kuntz in December 2012 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia. Petrographic examination shows abundant mineral debris with sparse clasts of basaltic, quenched, and gabbroic eucritic lithologies. Section also contains minor amounts (approximately 7 vol.% based on BSE image analysis) of diogenitic orthopyroxene. Other minerals are calcic plagioclase, pigeonite (some with fine augite exsolution lamellae), ilmenite, Ti-chromite, troilite, fayalite, Ni-poor metal and rare, irregular grains of Ni-poor kamacite. Geochemistry: Diogenitic orthopyroxene (Fs24.6Wo2.0; FeO/MnO = 32), pigeonite (Fs36.8Wo6.2; FeO/MnO = 30), clinopyroxene lamella in exsolved pigeonite (Fs29.3Wo42.3; FeO/MnO = 35). Classification: Eucrite (polymict breccia). Specimens: Type specimen plus one polished thick section on deposit with PSF; main mass with Kuntz. | ||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) Kuntz: Fabien Kuntz, France; Website (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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Photos: |
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Geography: |
Statistics: This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |