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Northwest Africa 7923
Basic information Name: Northwest Africa 7923
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7923
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 73.8 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2788 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7923 (NWA 7923)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (LL6)

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

Physical characteristics: Single stone, black fusion crust, saw cut reveals a breccia with cm-sized dark clasts and light-colored matrix, very fine grained.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a few indistinct chondrules, plagioclase up to 100 μm, ubiquitous high-Ca pyroxene, chromite, and troilite.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa32.5±0.3, Fe/Mn=65±2, n=7; low-Ca pyroxene Fs26.4±0.2Wo2.0±0.3, Fe/Mn=41±3, n=5.

Classification: Ordinary chondrite (LL6), weathering grade W1.

Specimens: 11.1 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 2012
Mass (g):73.82
Pieces:1
Class:LL6
Weathering grade:W1
Fayalite (mol%):32.5±0.3
Ferrosilite (mol%):26.4±0.2
Wollastonite (mol%):2.0±0.3
Classifier:C. Agee, UNM
Type spec mass (g):15
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-287; 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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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1459 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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