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Northwest Africa 7973
Basic information Name: Northwest Africa 7973
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7973
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 199.9 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H6
Recommended:  H6    [explanation]

This is 1 of 6544 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 12 Aug 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7973 (NWA 7973)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (H6)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, 2013.

Physical characteristics: Single stone, dark weathered exterior, saw cut reveals numerous small, indistinct chondrules set in a fine-grained brown-gray groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows equilibrated chondrules, abundant oxidized iron-metal, pervasive oxide veinlets.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa19.4±0.1, Fe/Mn=39±2, n=7, Low Ca-pyroxene Fs17.3±0.2Wo1.4±0.2, Fe/Mn=24±1, n=7.

Classification: Ordinary chondrite (H6), weathering grade (W3).

Specimens: 20.3 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):199.9
Pieces:1
Class:H6
Weathering grade:W3
Fayalite (mol%):19.4±0.1
Ferrosilite (mol%):17.3±0.2
Wollastonite (mol%):1.4±0.2
Classifier:C. Agee, UNM
Type spec mass (g):20.3
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-417; 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 1973 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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