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Northwest Africa 12733
Basic information Name: Northwest Africa 12733
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12733
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 166.7 g
Classification
  history:
Recommended:  Brachinite    [explanation]

This is 1 of 46 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Comments: Approved 8 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12733 (NWA 12733)

Morocco

Purchased: 2019 Mar

Classification: Primitive achondrite (Brachinite)

Physical characteristics: Brown stone without fusion crust.

Petrography: (J. Gattacceca, CEREGE) Igneous rock with equigranular texture and typical grain size 400 µm. Olivine is ultradominant over Ca-pyroxene. No plagioclase was observed. Metal and sulfides are present as euhedral grains (to 200 µm), veins along silicate rims, and µm-sized blebs within silcates. Chromite is present.

Geochemistry: Olivine Fa29.9±0.5, FeO/MnO 55.2±2.1 (n=3). Ca-Pyroxene Fs9.6±0.1Wo43.5±0.1, FeO/MnO 26.4±0.7 (n=2). Chromite Cr# 0.82.

Classification: Brachinite

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2019 Mar
Mass (g):166.7
Pieces:1
Class:Brachinite
Weathering grade:moderate
Fayalite (mol%):29.9±0.5 (n=3)
Magnetic suscept.:3.98
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20.36
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K420; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1374 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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