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Northwest Africa 8004 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8004 This is an OFFICIAL meteorite name. Abbreviation: NWA 8004 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 12.4 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 185 approved meteorites classified as CR2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 29 Sep 2013 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 8004 (NWA 8004) (Northwest Africa) Purchased: 2013 April Classification: Carbonaceous chondrite (CR2) History: Purchased by B. Li in Tucson in April 2013. Physical characteristics: Meteorite fragment, surface party covered by fusion crust, saw cut face shows many chondrules, CAIs, black inclusions, and metal specks, set in a dark-colored matrix. Magnetic susceptibility log χ = 4.92. Petrography: (R. Bartoschewitz, Bart, and B. Li, Beijing) Microprobe examination of a polished thin section shows dominantly porphyritic and rare radial chondrules up to 0.3 mm (av. 0.1 mm), some rims decorated with metal/sulfide blebs. Abundant, fine-grained matrix with metal grains up to 0.2 mm. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine: Fa0.4-41.4, mean Fa13.4±15.1; Cr2O3=0.38±0.16, CaO=0.29±0.13 wt% (n=22); enstatite: Fs0.9-8.1Wo0.5-2.1, mean Fs4.1±2.7Wo1.1±0.5 (n=8); Kamacite: Ni=2.2-7.8, Co=0.27-0.41 (wt.%); troilite, pentlandite (Ni=23.9, Co=1.0 wt.%) Classification: Carbonaceous chondrite (CR2). Specimens: 3.5 g on deposit at Kiel, B. Li holds the main mass and 1.7 g with Bart. | ||||||||||||||||||||||||||||||
Data from: MB102 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) Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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