Meteoritical Bulletin: Entry for Northwest Africa 12573

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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: 181 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	Brachinite
Recommended:			Brachinite [explanation]

This is 1 of 59 approved meteorites classified as Brachinite. [show all]
Search for other: Brachinites, Primitive achondrites

Comments:

Approved 23 Dec 2019

Writeup

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 Fa_34.4-36.0, FeO/MnO=76.8-110.8, N=19; Pyroxene Fs_28.3-29.9Wo_3.1-4.3, FeO/MnO=50.2-69.0, N=8; Plagioclase An_47.1-49.3(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 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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