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Northwest Africa 7543 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7543 This is an OFFICIAL meteorite name. Abbreviation: NWA 7543 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: 137 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 408 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 14 Nov 2013 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7543 (NWA 7543) Northwest Africa Purchased: 2012 Jun 21 Classification: HED achondrite (Eucrite, polymict) Petrography: (K. Metzler, IfP) Polymict breccia consisting of eucritic lithic clasts up to 2.5 cm with subophitic to granulitic textures and mineral fragments (pyroxene, plagioclase) set in a fine-grained, light gray matrix. Less than 10 vol% diogenitic low-Ca pyroxene fragments occur. Some dark melt rock clasts are observed. Most pyroxenes exhibit augite exsolution lamellae, but fragments of unequilibrated pyroxene can also be found. Accessories are silica, ilmenite, chromite, troilite and low-Ni metal. Geochemistry: Plagioclase compositions: An 88.3±5.1 (An82-97; n=13). Diogenitic pyroxene fragment: En71Fs26Wo3 Classification: Polymict eucrite | ||||||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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