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Northwest Africa 8479
Basic information Name: Northwest Africa 8479
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8479
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 155.8 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 92 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Jul 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8479 (NWA 8479)

(Northwest Africa)

Purchased: 2013 Jun 06

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased in Erfoud June 6, 2013.

Physical characteristics: Five complete stones with a thin translucent fusion crust. Cut surface reveals a homogeneous coarse-grained grayish interior.

Petrography: (J. Gattacceca, CEREGE): Unbrecciated and heavily fractured inequigranular igneous rock with poikilophytic texture. Typical grain size 800 μm. Mineralogy: pyroxene (53 vol%, with exsolution of augite in low-Ca pyroxenes), plagioclase (45 vol%), accessory chromite, ilmenite, silica, rare metal.

Geochemistry: Low Ca pyroxene Fs59.4±1.9Wo4.3±1.9 (n=8) FeO/MnO = 31.4±2.0. Augite exsolution Fs26.3Wo44.0 (n=1) FeO/MnO = 31.2. Plagioclase An88.5±0.2Ab11.2±0.3Or0.2±0.1 (n=4). Chromite Cr# 81% (n=1). Magnetic susceptibility 3.08 (log χ with χ in 10-9 m3/kg).

Classification: Eucrite (basaltic, unbrecciated). Low weathering.

Specimens: 24.1 g at CEREGE. Main mass with P. Thomas

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2013 Jun 06
Mass (g):155.8
Pieces:5
Class:Eucrite-unbr
Weathering grade:low
Ferrosilite (mol%):59.4±1.9
Wollastonite (mol%):4.3±1.9
Magnetic suscept.:3.08
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):24.13
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
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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