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Northwest Africa 10921
Basic information Name: Northwest Africa 10921
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10921
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 137 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 459 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 3 Dec 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10921 (NWA 10921)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Diogenite)

History: Purchased by Mendy Ouzillou from a Moroccan meteorite dealer in 2016.

Physical characteristics: Single stone, partially fusion crusted. Black fusion crust up to ~1 mm thick. Broken surfaces show centimeter-size green pyroxene grains, many with cleavage faces.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows approximately 98% orthopyroxene with accessory silica, chromite, Fe-metal, and Fe-sulfide. No olivine or plagioclase observed.

Geochemistry: (C. Agee and M. Spilde, UNM) Low-Ca pyroxene Fs28.0±0.3Wo3.2±0.2, Fe/Mn=29±1, n=8.

Classification: Orthopyroxenitic diogenite

Specimens: 20.14 g including a probe mount on deposit at UNM, Mendy Ouzillou holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):137
Pieces:1
Class:Diogenite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):28.0±0.3
Wollastonite (mol%):3.2±0.2
Classifier:C. Agee, UNM
Type spec mass (g):20.14
Type spec location:UNM
Main mass:Mendy Ouzillou
Comments:Field name MO-8; 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
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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