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Northwest Africa 12573
Basic information Name: Northwest Africa 12573
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12573
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 181 g
Classification
  history:
Recommended:  Brachinite    [explanation]

This is 1 of 50 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Comments: Approved 23 Dec 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12573 (NWA 12573)

(Northwest Africa)

Purchased: 2018 Oct

Classification: Primitive achondrite (Brachinite)

Petrography: The meteorite shows an equilibrated texture with triple junctions. The dominant minerals of the meteorite are olivine (grain size 0.46-1.00 mm) and pyroxene (grain size 0.26-0.53 mm). Accessory minerals include plagioclase (grain size 0.12-0.29 mm), troilite and metal.

Geochemistry: Olivine Fa34.4-36.0, FeO/MnO=76.8-110.8, N=19; Pyroxene Fs28.3-29.9Wo3.1-4.3, FeO/MnO=50.2-69.0, N=8; Plagioclase An47.1-49.3 (EPMA).

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Beijing, China
Date:P 2018 Oct
Mass (g):181
Pieces:1
Class:Brachinite
Fayalite (mol%):35.6±0.4
Ferrosilite (mol%):28.9±0.6
Wollastonite (mol%):3.8±0.4
Classifier:Peng Hao and Fanyan, IGCAS
Type spec mass (g):21
Type spec location:IGCAS
Main mass:Wang Peng
Comments:Submitted by Li shijie
Institutions
   and collections
IGCAS: Institute of Geochemistry Chinese Academy of Sciences, Guiyang, China (institutional address; updated 27 Mar 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7100 approved meteorites from (Northwest Africa) (plus 2005 unapproved names)

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