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Northwest Africa 6731 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 6731 This is an OFFICIAL meteorite name. Abbreviation: NWA 6731 Observed fall: No Year found: 2007 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 54 approved meteorites classified as Eucrite-cm. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 Aug 2012 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 101:
Northwest Africa 6731 (NWA 6731) (Northwest Africa) Purchased: 2007 Feb Classification: HED achondrite (Eucrite, cumulate) History: One small stone was purchased in Erfoud in February 2007 Physical characteristics: One partly crusted 13.7 g stone. Petrography: (R. Bartoschewitz, Bart) Monomict breccia of subhedral pyroxene and plagioclase crystals (<1 mm) in a finer grained matrix and melt pockets. Ilmenite occurs as clusters of tiny crystals. Further accessory minerals are olivine, silica and troilite. Geochemistry: (R. Bartoschewitz, Bart; P. Appel, B. Mader, Kiel) Ca-poor pyroxene Fs52.7-60.1Wo3.2-4.8, Ca-rich pyroxene Fs29.6-60.1Wo43-6.1, olivine Fa75.1, feldspar An71-92Or<2.8. Kamacite Ni <0.1 wt%, Co=1.1 wt%, ilmenite, troilite, and silica. Classification: Cumulate eucrite (fresh) Specimens: Type specimens 2.75 g Kiel; 1.5 g Bart. | ||||||||||||||||||||||||||||||
Data from: MB101 Table 0 Line 0: |
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Institutions and collections |
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013) Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |