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Northwest Africa 7819
Basic information Name: Northwest Africa 7819
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7819
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 21 g
Meteoritical Bulletin:  MB 103  (2014)  CO3
Recommended:  CO3    [explanation]

This is 1 of 642 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 1 Jul 2014
Writeup from MB 103:

Northwest Africa 7819 (NWA 7819)

(Northwest Africa)

Purchased: 2013 Feb

Classification: Carbonaceous chondrite (CO3)

History: Purchased by GHupé in February 2013 from a dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Composed of very small, well-formed chondrules (0.2-0.7mm)and rare, small, fine grained CAIs in a deep brown, very fine grained matrix. Olivine, orthopyroxene, subcalcic augite and augite.

Geochemistry: Olivine (Fa0.3-52.8; Cr2O3 in ferroan olivine = 0.09-0.15 wt.%, mean 0.11 wt.%, s.d. 0.02 wt.%, N = 7), orthopyroxene (Fs0.7-1.4Wo0.9-3.5), subcalcic augite (Fs1.0Wo33.7), augite (Fs0.8-1.7Wo41.7-40.1; Fs25.4Wo49.0).

Classification: Carbonaceous chondrite (CO3).

Specimens: A total of 20.2 g of material and one polished thin section are on deposit at UWB. GHupé holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2013 Feb
Mass (g):21
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.3-52.8
Ferrosilite (mol%):0.7-1.4
Wollastonite (mol%):0.9-3.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):4.2
Type spec location:UWB
Main mass:GHupé
Comments:GH-451; submitted by A. Irving
   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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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