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Northwest Africa 12926
Basic information Name: Northwest Africa 12926
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12926
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 40 g
Classification
  history:
Recommended:  H7    [explanation]

This is 1 of 21 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Nov 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12926 (NWA 12926)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (H7)

History: Purchased by Mustapha Oulkouch in Morocco from anonymous dealer and sent to Dustin Dickens for classification.

Physical characteristics: Single stone with brown, desert weathered, exterior. Saw cut reveals polygonal texture of dark colored silicates and opaques, significant oxidation present.

Petrography: (C. Agee, UNM) This meteorite has an intergranular texture of olivine and pyroxene, with grain size 50-500 μm, plagioclase grain size up to 100 μm. Oxidized metal and sulfide, numerous oxide veinlets present. No chondrules observed.

Geochemistry: (C. Agee, UNM) Olivine Fa18.5±0.2, Fe/Mn=38±2, n=6; low-Ca pyroxene Fs16.6±0.1Wo3.6±0.3, Fe/Mn=23±1, n=6; plagioclase Ab82.6±1.4, n=4.

Classification: Ordinary chondrite H7. Type 7 based on absence of chondrules, presence of plagioclase, relatively high wollastonite content of orthopyroxene.

Specimens: 8 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):40
Pieces:1
Class:H7
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):18.5±0.2
Ferrosilite (mol%):16.6±0.1
Wollastonite (mol%):3.6±0.3
Classifier:C. Agee, UNM
Type spec mass (g):8
Type spec location:UNM
Main mass:Dustin Dickens
Comments:Field name DD-51; submitted by C. Agee, UNM
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. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7048 approved meteorites from (Northwest Africa) (plus 1998 unapproved names)

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