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Northwest Africa 5686 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 5686 This is an OFFICIAL meteorite name. Abbreviation: NWA 5686 Observed fall: No Year found: 2008 Country: (Northwest Africa) Mass: 549 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 236 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 2 Feb 2015 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 5686 (NWA 5686) (Northwest Africa) Purchased: 2008 Classification: HED achondrite (Eucrite, brecciated) History: The meteorite was bought from a Moroccan meteorite dealer in 2008. Petrography: The meteorite shows a grayish to slighly greenish interior and is brecciated. It is composed of lithic and mineral clasts set into a fine-grained clastic matrix. Clast are basaltic litholigies and impact melt fragments. Dominant minerals in clasts and matrix are exsolved pyroxene and calcic plagioclase. Minor phases include SiO2 polymorphs and chromite. Geochemistry: low-Ca pyroxene: Fs30.6±2.2Wo4.2±1.1 (Fs26.1-33.2Wo1.9-7.7, n=41, FeO/MnO=26-36); Ca-pyroxene: Fs13±1.3Wo42±1.8 (Fs11.6-16.8Wo37.9-44.2, n=21, FeO/MnO=20-31); calcic plagioclase: An93.1±0.5 (An92.5-93.9, n=12) | ||||||||||||||||||||||||||||
Data from: MB104 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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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