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Northwest Africa 8767 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8767 This is an OFFICIAL meteorite name. Abbreviation: NWA 8767 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 835 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 13 Feb 2015 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 8767 (NWA 8767) (Northwest Africa) Purchased: 2014 Classification: HED achondrite (Eucrite, brecciated) History: The meteorite was bought 2014 at a mineral fair in Munich, Germany. Petrography: The meteorite is a eucritic breccia composed of angular to partly rounded basaltic fragments separated by shock veins and fine-grained cataclastic zones. Dominant minerals are exsolved pyroxenes and calcic plagioclase. Minor phases include chromite, troilite, and silica polymorphs. Shock veins are mostly recrystallized. Geochemistry: low-Ca pyroxene: Fs60.6±1Wo2.9±0.9 (Fs58.2-62.2Wo2-6.2, n=20, FeO/MnO=32-35); Ca-pyroxene: Fs26.1±0.7Wo44.2±0.6 (Fs25.3-27.8Wo41.9-45.1, n=20, FeO/MnO=31-37); calcic plagioclase: An88.3±1.1 (An84.9-91.3, n=19) | ||||||||||||||||||||||||||||
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) Stehlik: Harald Stehlik, 1220 Wien, Austria (private address) |
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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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