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Northwest Africa 7976
Basic information Name: Northwest Africa 7976
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7976
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 1312 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  EH6
Recommended:  EH6    [explanation]

This is 1 of 6 approved meteorites classified as EH6.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 22 Oct 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7976 (NWA 7976)

Morocco

Purchased: 2013

Classification: Enstatite chondrite (EH6)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, 2012.

Physical characteristics: Single stone, some fusion crust, saw cut reveals light brown, fine-grained matrix, crisscrossed by veinlets, a few scattered indistinct chondrules.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous enstatite grains ~100 μm, with ubiquitous plagioclase and sulfide. Fe-metal, most now oxidized pockets and veinlets, makes up ~20-30% of this meteorite.

Geochemistry: (C. Agee and M. Spilde, UNM) Enstatite Fs0.9±0.9Wo1.5±0.3; plagioclase Or4.2±0.4Ab80.6±0.6An15.2±0.9; kamacite Fe=94.0±3.2 Ni=2.9±1.6 Si=3.0±2.2 (all wt%), n=5.

Classification: Enstatite chondrite (EH6), EH based on high Si content of kamacite. Weathering grade W4.

Specimens: 29 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):1311.7
Pieces:1
Class:EH6
Weathering grade:W4
Ferrosilite (mol%):0.9±0.9
Wollastonite (mol%):1.5±0.3
Classifier:C. Agee, UNM
Type spec mass (g):29
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-198; 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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1402 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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