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Northwest Africa 12934
Basic information Name: Northwest Africa 12934
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12934
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 563 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  Angrite
Recommended:  Angrite    [explanation]

This is 1 of 35 approved meteorites classified as Angrite.   [show all]
Search for other: Achondrites, Angrites
Comments: Approved 23 Dec 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12934 (NWA 12934)

(Northwest Africa)

Purchased: Oct 2018

Classification: Angrite

Petrography: The meteorite mainly consists of irregular plagioclase (28 vol%, grain size 0.24 mm), olivine (31 vol%, grain size 0.96 mm) and pyroxene (41vol%, grain size 0.54 mm) and show a diabasic texture. Accessory troilite and ilmenite can be observed.

Geochemistry: Olivine Fa40.1-42.7, CaO content is 1.09 wt% , FeO/MnO=73.4-98.7, N=18; Pyroxene Fs7.7-11.7, Wo52.8-56.4, Al2O3 content is 7.08 wt%; TiO2 content is 1.34 wt%, FeO/MnO=55.1-193.2, N=8; Plagioclase An99.2-99.8 (EPMA).

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Beijing, China
Date:P Oct 2018
Mass (g):563
Pieces:1
Class:Angrite
Fayalite (mol%):41.9±0.5
Ferrosilite (mol%):9.4±1.4
Wollastonite (mol%):54.4±1.3
Classifier:Peng Hao and Fanyan, IGCAS
Type spec mass (g):22
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 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7482 approved meteorites from (Northwest Africa) (plus 1988 unapproved names)

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