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Northwest Africa 8312
Basic information Name: Northwest Africa 8312
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8312
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 1338 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L-melt breccia
Recommended:  L-melt breccia    [explanation]

This is 1 of 28 approved meteorites classified as L-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8312 (NWA 8312)

(Northwest Africa)

Purchased: 2014 Jan

Classification: Ordinary chondrite (L, melt breccia)

History: Purchased by GHupé in January 2014 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Unaltered specimen composed of sparse chondrule-bearing L5 clasts within a dominant very fine grain size black matrix of fine grained mafic silicates with accessory sodic plagioclase, chromite and dispersed blebs of kamacite and troilite.

Geochemistry: Olivine (Fa23.9-24.3, N = 3), orthopyroxene (Fs13.8Wo2.0; Fs20.5-20.8Wo1.6-1.5, N = 2), subcalcic augite (Fs16.3-17.3Wo26.1-22.0).

Classification: Ordinary chondrite (L melt breccia).

Specimens: 22.4 g including one polished thick section at UWB. The remainder is held by GHupé.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014 Jan
Mass (g):1338
Pieces:1
Class:L-melt breccia
Shock stage:S6
Weathering grade:W0
Fayalite (mol%):23.9-24.3
Ferrosilite (mol%):20.5-20.8
Wollastonite (mol%):2.0-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.4
Type spec location:UWB
Main mass:G. Hupe
Comments:GH-456; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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