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Northwest Africa 7922
Basic information Name: Northwest Africa 7922
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7922
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 105.3 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H6
Recommended:  H6    [explanation]

This is 1 of 6132 approved meteorites (plus 5 unapproved names) classified as H6.   [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 7922 (NWA 7922)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (H6)

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 exterior, some weathered fusion crust, saw cut reveals many small chondrules and abundant metal grains set in an orange-brown groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous distinct POP chondrules, ~25% of metal is oxidized, some weathering veins.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa18.5±0.3, Fe/Mn=38±2, n=10; low-Ca pyroxene Fs16.4±0.3Wo0.9±0.4, Fe/Mn=23±2, n=10.

Classification: Ordinary chondrite (H6), weathering grade W2.

Specimens: 19 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):105.34
Pieces:1
Class:H6
Weathering grade:W2
Fayalite (mol%):18.5±0.3
Ferrosilite (mol%):16.4±0.3
Wollastonite (mol%):0.9±0.4
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-235; 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 1522 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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