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Northwest Africa 8478
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:help 64.6 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CV3
Recommended:  CV3    [explanation]

This is 1 of 531 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 18 Jul 2014
Writeuphelp
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:
Place of purchase:Erfoud, Morocco
Date:P 2013 Jun 05
Mass (g):64.6
Pieces:13
Class:CV3
Weathering grade:moderate
Fayalite (mol%):4.8±6.7 (PMD=90%)
Ferrosilite (mol%):1.3±0.3
Wollastonite (mol%):0.9±0.0
Magnetic suscept.:3.85
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):13
Type spec location:CEREGE
Main mass:P. Thomas
Comments:Submitted by J. Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
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: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7296 approved meteorites from (Northwest Africa) (plus 1980 unapproved names)

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