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Northwest Africa 8478 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8478 This is an OFFICIAL meteorite name. Abbreviation: NWA 8478 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 64.6 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 499 approved meteorites (plus 2 unapproved names) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 18 Jul 2014 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8478 (NWA 8478) (Northwest Africa) Purchased: 2013 Jun 05 Classification: Carbonaceous chondrite (CV3) History: Purchased in Erfoud June 5, 2013. Physical characteristics: Thirteen dark fragments, some with dull fusion crust. Cut surface reveals chondrules and CAIs set in a dark matrix. Petrography: (J. Gattacceca, CEREGE): Chondrules up to 2 mm set in a fine-grained matrix. Chondrule:matrix ratio is 59%:41% (by point counting, n=323). Chondrule mean apparent size 850±430 μm (N=25). Troilite and metal are present. Metal is found in the matrix (~5 μm grains) and as blebs in the chondrules (10-50 μm). Geochemistry: Olivine Fa4.8±6.7 (PMD=90%, range 0.5-26.3, N=17), orthopyroxene Fs1.3±0.3Wo0.9±0.0 (N=3). Olivines are slightly zoned. Magnetic susceptibility log χ = 3.85 (χ in 10-9 m3/kg). Classification: Carbonaceous chondrite (CV3). moderate weathering Specimens: 13 g at CEREGE. Main mass with P. Thomas. | ||||||||||||||||||||||||||||||
Data from: MB103 Table 0 Line 0: |
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Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/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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