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Northwest Africa 7925
Basic information Name: Northwest Africa 7925
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7925
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 130.1 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H4
Recommended:  H4    [explanation]

This is 1 of 5963 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7925 (NWA 7925)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (H4)

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

Physical characteristics: Single stone, dark irregular oxidized exterior, saw-cut reveals many densely packed chondrules of variable size, fine-grained metal, some areas with completely oxidized metal.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous POP chondrules, a few with mesostasis, metal is significantly oxidized, some carbonate detected.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa21.7±0.6, Fe/Mn=43±2, n=31; low-Ca pyroxene Fs16.7±1.2Wo1.2±1.8, Fe/Mn=25±5, n=29.

Classification: Ordinary chondrite (H4), weathering grade W3.

Specimens: 20.7 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):130.1
Pieces:1
Class:H4
Weathering grade:W3
Fayalite (mol%):21.7±0.6
Ferrosilite (mol%):16.7±1.2
Wollastonite (mol%):1.2±1.8
Classifier:C. Agee, UNM
Type spec mass (g):20.7
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-358; 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 1503 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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