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Northwest Africa 13675
Basic information Name: Northwest Africa 13675
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13675
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 24 g
Classification
  history:
Recommended:  CK5    [explanation]

This is 1 of 182 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 30 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13675 (NWA 13675)

(Northwest Africa)

Purchased: 2020 Sep

Classification: Carbonaceous chondrite (CK5)

History: Purchased by Shun-Chung Yang and Juan Chen in September 2020 from a dealer in Guelmim, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Sparse granular, Cr-magnetite-bearing chondrules are set in a recrystallized matrix containing Cr-magnetite and plagioclase.

Geochemistry: Olivine (Fa29.3±0.8, range Fa28.3-30.1, N = 4), low-Ca pyroxene (Fs25.2Wo2.0), pigeonite (Fs23.1Wo5.7; Fs24.2Wo14.1; N = 2), augite (Fs15.0Wo37.0), plagioclase (An27.5Or3.9), magnetite (Cr2O3 = 3.4-3.6 wt.%, N = 2).

Classification: Carbonaceous chondrite (CK5).

Specimens: 6.9 g in the form of a polished endcut at UWB; remainder with Mr. S.-C. Yang and Mr. J. Chen.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Guelmim
Date:P 2020 Sep
Mass (g):24
Pieces:1
Class:CK5
Shock stage:low
Weathering grade:low
Fayalite (mol%):29.3±0.8
Ferrosilite (mol%):25.2; 23.1; 24.2; 15.0
Wollastonite (mol%):2.0; 5.7; 14.1; 37.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):6.9
Type spec location:UWB
Main mass:S.-C. Yang/J. Chen
Comments:Work name SCY-9; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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