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Northwest Africa 10932
Basic information Name: Northwest Africa 10932
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10932
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 268 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Brachinite
Recommended:  Brachinite    [explanation]

This is 1 of 49 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Comments: Approved 10 Dec 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10932 (NWA 10932)

(Northwest Africa)

Purchased: 2016

Classification: Primitive achondrite (Brachinite)

History: Purchased by Aziz Habibi in Agadir.

Physical characteristics: Weathered exterior. Fresh broken surfaces reveal brown, sub-millimeter olivine grains.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a texturally equilibrated mosaic of olivine and pyroxene grains with many triple junction grain boundaries. Olivine makes up approximately 90% of this meteorite. Cl-rich apatite, merrilite, and Ni-bearing sulfide are present. No plagioclase detected.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa30.6±0.2, Fe/Mn=64±4, n=7; low-Ca pyroxene Fs25.0±9.1Wo2.2±0.0, Fe/Mn=39±2, n=5; high-Ca pyroxene Fs10.4±0.1Wo43.4±0.6, Fe/Mn=39±2, n=5.

Classification: Brachinite based on the high olivine/pyroxene ratio, relatively high Fa-content of olivine, and the observed equlilbrated texture typical for brachinites.

Specimens: 20.5 g including a probe mount on deposit at UNM, Aziz Habibi holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):268
Pieces:1
Class:Brachinite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):30.6±0.2
Ferrosilite (mol%):25.0±9.1, 10.4±0.1
Wollastonite (mol%):2.2±0.0, 43.4±0.6
Classifier:C. Agee, UNM
Type spec mass (g):20.5
Type spec location:UNM
Main mass:Aziz Habibi
Comments:Field name AH200; submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6984 approved meteorites from (Northwest Africa) (plus 2008 unapproved names)

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