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Northwest Africa 7901
Basic information Name: Northwest Africa 7901
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7901
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 1962 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H6
Recommended:  H6    [explanation]

This is 1 of 6825 approved meteorites (plus 6 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 27 May 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7901 (NWA 7901)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (H6)

History: Purchased by Blaine Reed in Tucson, 2013.

Physical characteristics: Single stone, weathered fusion crust, saw cut reveals densely packed small chondrules, but also one chondrule with apparent diameter ~5 mm, abundant fine-grained metal set in a dark-gray groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous texturally equilibrated chondrules, ~20% Fe,Ni metal and oxidized Fe,Ni metal. Accessory troilite and Cl-rich apatite.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa19.5±0.2, Fe/Mn=39±1, n=6; low-Ca pyroxene Fs17.0±0.2Wo1.3±0.2, Fe/Mn=22±1, n=5.

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

Specimens: 29.7 g including a probe mount on deposit at UNM, Reed holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2013
Mass (g):1962.4
Pieces:1
Class:H6
Weathering grade:W2
Fayalite (mol%):19.5±0.2
Ferrosilite (mol%):17.0±0.2
Wollastonite (mol%):1.3±0.2
Classifier:C. Agee, UNM
Type spec mass (g):29.7
Type spec location:UNM
Main mass:Reed
Comments: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)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address)
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 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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