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Northwest Africa 13332
Basic information Name: Northwest Africa 13332
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13332
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 17.8 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 50 approved meteorites classified as CK3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites
Comments: Approved 4 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13332 (NWA 13332)

(Northwest Africa)

Purchased: 2005

Classification: Carbonaceous chondrite (CK3)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and then donated to PSF.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) This small stone has experienced considerable desert weathering resulting in pervasive staining by iron hydroxides. Well-formed granular chondrules (apparent diameter 1080±570 µm, N = 21) containing rounded grains of altered Cr-magnetite plus sparse very fine grained CAI are set in a fine grained matrix (~25 vol.%, deep red-brown in thin section) containing altered Cr-magnetite, kamacite and troilite. CAI are composed of mainly of gehlenite together with diopside, spinel, taenite, hercynite and pentlandite.

Geochemistry: Olivine (Fa36.2±20.2, range Fa0.3-59.2, N = 6), low-Ca pyroxene (Fs27.2±17.6Wo0.6±0.1, range Fs6.9-39.0Wo0.5-0.6, N = 3), subcalcic augite (Fs47.4Wo20.7), diopside (Fs3.0Wo40.0),plagioclase (An94.3Or0.0), magnetite (Cr2O3 = 1.6 wt.%).

Classification: Carbonaceous chondrite (CK3).

Specimens: The entire specimen including one polished thin section is at PSF.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):17.8
Pieces:1
Class:CK3
Shock stage:S2
Weathering grade:high
Fayalite (mol%):36.2±20.2
Ferrosilite (mol%):27.2±17.6
Wollastonite (mol%):0.6±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):17.8
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC20001; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7374 approved meteorites from (Northwest Africa) (plus 1957 unapproved names)

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