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Northwest Africa 8490 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8490 This is an OFFICIAL meteorite name. Abbreviation: NWA 8490 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 21 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 14 Sep 2014 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8490 (NWA 8490) (Northwest Africa) Purchased: 2014 Classification: HED achondrite (Eucrite) Physical characteristics: The two small individuals are partly covered by fusion crust and display a light grayish interior. Petrography: The meteorite consists of basaltic lithologies of dominantly exsolved pyroxene and calcic plagioclase set into a fine-grained clastic groundmass. Minor phases are SiO2 polymorphs, chromite, and pyrrhotite. Geochemistry: low-Ca pyroxene: Fs55.2-61.6Wo2.3-8.6; FeO/MnO=31-35; Ca-pyroxene: Fs28.6-35.4Wo33.9-42.1; FeO/MnO=30-36; calcic plagioclase: An83.5-89.7 | ||||||||||||||||||||||||||||
Data from: MB103 Table 0 Line 0: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) Stehlik: Harald Stehlik, 1220 Wien, Austria (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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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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