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Northwest Africa 12732
Basic information Name: Northwest Africa 12732
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12732
Observed fall: No
Year found: 2018
Country: Algeria
Mass:help 79 g
Classification
  history:
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 90 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 8 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12732 (NWA 12732)

Algeria

Purchased: 2018 Oct

Classification: HED achondrite (Eucrite, unbrecciated)

History: Bought from Mohamed Elguirah in October 2018

Physical characteristics: Dark green stone with no fusion crust.

Petrography: (J. Gattacceca, CEREGE) Unbrecciated igenous rock with subophitic texture. Silicates are fractured and have typical grain size of 300 µm. Main minerals are pyroxene and plagioclase. Silica polymorph is present. Opaques are troilite, ilmenite (to 50 µm), metal.

Geochemistry: Low-Ca pyroxene Fs56.2±2.4Wo6.4±3.8, FeO/MnO34.1±2.0 (n=5). Plagioclase An77.5±2.5Ab21.5±2.2Or1.0±0.3 (n=3).

Classification: Achondrite (Eucrite, unbrecciated).

Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger.

Data from:
  MB108
  Table 0
  Line 0:
Date:P 2018 Oct
Mass (g):79
Pieces:1
Class:Eucrite-unbr
Ferrosilite (mol%):56.2±2.4 (n=5)
Wollastonite (mol%):6.4±3.8
Magnetic suscept.:2.59
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):16
Type spec location:CEREGE
Main mass:Jean Redelsperger
Comments:work name JR070; submitted by Jérôme 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. 108, in preparation (2019)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 964 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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