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Northwest Africa 11209
Basic information Name: Northwest Africa 11209
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11209
Observed fall: No
Year found: 2015
Country: Mali
Mass:help 50.2 g
Classification
  history:
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 65 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 22 Apr 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11209 (NWA 11209)

Mali

Purchased: 2015

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased from El Moktar Ait Hiba at the 2015 Munich meteorite show.

Physical characteristics: A stone with fresh fusion crust. Broken surface reveals homogeneous grey interior.

Petrography: Igneous rock with ophitic texture. Low-Ca pyroxenes have augite exsolution. Average grain size 400 μm. Accessory silica polymorph, ilmenite, chromite. Rare metal.

Geochemistry: Low-Ca pyroxene Fs60.2±0.2Wo1.7±0.2, FeO/MnO=30.9±2.3 (N=5). Augite exsolution Fs30.5Wo38.1 (N=1). Plagioclase An79.2Ab17.7Or3.1 (N=4).

Classification: Eucrite, unbrecciated

Specimens: type specimen and polished sections at CEREGE. Main mass with Pierre-Marie Pelé.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2015
Mass (g):50.24
Pieces:1
Class:Eucrite-unbr
Weathering grade:minimal
Ferrosilite (mol%):60.2±0.2 (N=5)
Wollastonite (mol%):1.7±0.2
Magnetic suscept.:2.81
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):10.23
Type spec location:CEREGE
Main mass:Pierre-Marie Pelé
Finder:Pierre-Marie Pelé
Comments:work name HO-1A15; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Europole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 9 Mar 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
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Geography:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 20 approved meteorites from Mali (plus 1 unapproved name)

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