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Northwest Africa 7097 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7097 This is an OFFICIAL meteorite name. Abbreviation: NWA 7097 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 391 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 31 May 2012 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 100:
Northwest Africa 7097 (NWA 7097) (Northwest Africa) Purchased: 2011 Classification: HED achondrite (Eucrite, polymict) Petrography: Moderately weathered polymict breccia consisting of fine-grained and more coarse-grained basaltic lithologies, impact melt fragments, and mineral clasts set in a finer grained brecciated groundmass of dominantly calcic plagioclase and exsolved Ca-pyroxene. Minor phases include silica polymorphs, troilite, ilmenite and Ti-rich chromite. Geochemistry: low Ca-pyroxene Fs45.6 (29.2-63.6) Wo7.5 (1.9-12.1), Fe/Mn=29-32; high Ca-pyroxene Fs32.8 (32.0-33.6) Wo37.2 (36.4-37.8), Fe/Mn=29-30; plagioclase An89.1 (82.2-92.5). The low-Ca pyroxene Fs ranges may reflect both diogenite and eucrite components. | ||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1625: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
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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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Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |