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Northwest Africa 7953
Basic information Name: Northwest Africa 7953
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7953
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 50.8 g
Meteoritical Bulletin:  MB 102  (2013)  CK4
Recommended:  CK4    [explanation]

This is 1 of 119 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 18 Nov 2013
Writeup from MB 102:

Northwest Africa 7953 (NWA 7953)

(Northwest Africa)

Purchased: 2013 Jun

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Adam Aaronson in Temara, Morocco, in May 2013.

Petrography: (A. Irving and S. Kuehner, UWS) Exceptionally fresh, unequilibrated chondrite containing well-formed chondrules and dispersed grains of magnetite (some in chondrule rims). Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, Ti-Cr-bearing magnetite, pentlandite, Ni-bearing pyrrhotite, Ni-free pyrrhotite and chlorapatite.

Geochemistry: Olivine (Fa27.2-36.5, n = 3; FeO/MnO = 67-85), orthopyroxene (Fs26.4-27.6Wo0.9-1.3), clinopyroxene (Fs8.9-10.6Wo46.5-46.1).

Classification: Carbonaceous chondrite (CK3).

Specimens: 10.2 g and one polished thin section are at UWB. The remainder is held by GHupé.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2013 Jun
Mass (g):50.8
Shock stage:S1
Weathering grade:low
Fayalite (mol%):27.2-36.5 (n=3)
Ferrosilite (mol%):26.4-27.6
Wollastonite (mol%):0.9-1.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):10.2
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1575; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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