Meteoritical Bulletin: Entry for Northwest Africa 13913

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Northwest Africa 13913

Basic information

Name: Northwest Africa 13913
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13913
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 42 g

Classification
history:

Recommended:

CK6 [explanation]

This is 1 of 82 approved meteorites classified as CK6. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 25 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13913 (NWA 13913)

(Northwest Africa)

Purchased: 2020 Nov

Classification: Carbonaceous chondrite (CK6)

History: Purchased by Shun-Chung Yang and Juan Chen in November 2020 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Largely recrystallized with some vague chondrule-like features. Composed predominantly of olivine and augite with subordinate Cr-magnetite, intermediate plagioclase., low-Ca pyroxene, troilite, pentlandite and Cr-Zn-bearing hercynitic spinel.

Geochemistry: Olivine (Fa_32.6±0.4, range Fa_31.9-32.9, N = 5), pigeonite (Fs_25.4Wo_7.4), augite (Fs_9.0±0.7Wo_46.5±0.5, range Fs_8.5-9.5Wo_46.1-46.8, N = 2), plagioclase (An_64.7Or_0.9), magnetite (Cr₂O₃ = 4.6-4.7 wt.%, N = 3).

Classification: Carbonaceous chondrite (CK6).

Specimens: 8.9 g in the form of a polished endcut at UWB; remainder with Mr. Shun-Chung Yang and Mr. Juan Chen.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Tindouf
Date:	P 2020 Nov
Mass (g):	42
Pieces:	1
Class:	CK6
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	32.6±0.4
Ferrosilite (mol%):	25.4; 9.0±0.7
Wollastonite (mol%):	7.4; 46.5±0.5
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	8.9
Type spec location:	UWB
Main mass:	S.-C. Yang/J. Chen
Comments:	Work name SCY-19; 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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