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Northwest Africa 12781 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12781 This is an OFFICIAL meteorite name. Abbreviation: NWA 12781 Observed fall: No Year found: 2019 Country: Morocco Mass: 34 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 628 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 23 May 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 12781 (NWA 12781) Morocco Purchased: 2019 Classification: Carbonaceous chondrite (CV3) History: (Ziyao Wang) Purchased by Ziyao Wang from Craig Zlimen in the US, 2019. Zlimen had bought it from a Moroccan dealer. Physical characteristics: (Ziyao Wang) dark-yellow flat stone 34 g, without fusion crust Petrography: (R. Bartoschewitz, Bart) well-defined chondrules (~70 vol%, 0.4-3 mm, av. 0.7 mm) of various types and AOAs set in a opaque brown matrix. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa14.2 (1.1-22.6; n=27); pyroxene Fs6.7Wo0.9 (Fs2.2-18.6Wo0.2-3.5, n=11); Cr-spinel. Kamacite Ni=4.2, Co=1.4 (n=1); taenite Ni=21-40, Co=0.3-1.0 (n=2) (all wt%); troilite; pyrrhotite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.83 Classification: Carbonaceous chondrite (CV3) Specimens: 6.9 g at Kiel on deposit, Ziyao Wang holds the main mass and 6 g with Bart. | ||||||||||||||||||||||||||||||
Data from: MB109 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. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 2049 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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