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Northwest Africa 7928
Basic information Name: Northwest Africa 7928
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7928
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 107 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L5
Recommended:  L5    [explanation]

This is 1 of 6696 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7928 (NWA 7928)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (L5)

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

Physical characteristics: Single stone, dark brown, oxidized fusion crust, saw cut reveals breccia with clasts up to 10s of cm, many dark melt veins.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows an equilibrated chondrite texture, scarce indistinct chondrules, melt pockets, apatite (Cl-rich), chromite, FeNi metal, troilite, up to ~50% of metal is oxidized, some weathering veins.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa26.0±1.0, Fe/Mn=52±5, n=6; low-Ca pyroxene Fs22.1±1.0Wo1.7±0.1, Fe/Mn=31±2, n=6; plagioclase Ab84±2, n=3.

Classification: Ordinary chondrite (L5), weathering grade W2.

Specimens: 18.9 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):106.97
Pieces:1
Class:L5
Weathering grade:W2
Fayalite (mol%):26.0±1.0
Ferrosilite (mol%):22.1±1.0
Wollastonite (mol%):1.7±0.1
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-371; 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
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1466 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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