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Northwest Africa 1931
Basic information Name: Northwest Africa 1931
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1931
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 267 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  H5
MetBase:  v. 7.1  (2006)  H5
Recommended:  H5    [explanation]

This is 1 of 12057 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Data from:
  MB113
  Table 0
  Line 0:
Type spec location:ASU type specimen actually at UWB. 21.1 g including one polished thin section at UWB; remainder with owner.
Comments:Work names 200 and F10, thin section OKJ5
Data from:
  MB88
  Table 4
  Line 87:
Place of purchase:Rissani
Date:P Jun 2003
Mass (g):267
Pieces:1
Class:H5
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):19.1
Ferrosilite (mol%):16.5
Classifier:T. Bunch and J. Wittke, NAU
Type spec mass (g):21.1
Type spec location:ASU
Main mass:MFarmer
Institutions
   and collections		 ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States (institutional address; updated 12 Apr 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Published in Meteoritical Bulletin, no. 113, in preparation (2024)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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