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Northwest Africa 6743 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 6743 This is an OFFICIAL meteorite name. Abbreviation: NWA 6743 Observed fall: No Year found: 2008 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 612 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 15 Jun 2016 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 6743 (NWA 6743) Morocco Purchased: 2008 Apr Classification: Carbonaceous chondrite (CV3) History: The stone was purchased in Agadir in April 2008. Physical characteristics: One dark brown stone of 60.4 g. Saw cut shows brown matrix, chondrules and red-brown weathering areas. Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows dark fine groundmass with mineral fragments, chondrules (PO, RP; PP; GO) up to 1 mm (avg. 0.6 mm), and CAIs. Chondrule/matrix ratio ~0.9. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine, Fa25.2±20.9 (n=13); pyroxene, Fs1.4±0.7Wo1.0±0.2 (n=7); feldspar, An76Or0.9 (n=1). O-isotopes (R. Greenwood and I. Franchi, OU): δ17O = -3.86, δ18O = -0.14 (permil). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.27. Classification: Carbonaceous chondrite (CV3) Specimens: 12.1 g on deposit at Kiel, main mass AKnöfel, and Bart 6.9 g. | ||||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||
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) OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011) 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos: |
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Geography:![]() |
Statistics: This is 1 of 1973 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater) |