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Northwest Africa 12964
Basic information Name: Northwest Africa 12964
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12964
Observed fall: No
Year found: 2018
Country: Morocco
Mass:help 278 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 516 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 29 Nov 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12964 (NWA 12964)

Morocco

Purchased: 2018

Classification: Ureilite

Petrography: (J. Gattaceca, CEREGE) Blocky silicate assemblage. Grain size about 1 mm. Olivine dominates strongly over pyroxene. Olivine shows reduced rims. Carbon material is present at grain boundaries.

Geochemistry: Olivine cores Fa22.8±0.2 (n=3), rim Fa18.2 (n=1), CaO 0.27 wt%, Cr2O3 0.54 wt%. Pigeonite Fs18.9Wo10.2, FeO/MnO=32.9 (n=2).

Classification: Ureilite

Specimens: Type specimen at CEREGE. Main mass with George Peneff.

Data from:
  MB108
  Table 0
  Line 0:
Date:P 2018
Mass (g):278
Pieces:30
Class:Ureilite
Magnetic suscept.:3.40
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):21.19
Type spec location:CEREGE
Main mass:George Penneff
Comments:work name GP01; 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)
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1419 approved meteorites from Morocco (plus 15 unapproved names) (plus 1 impact crater)

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