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Northwest Africa 13035
Basic information Name: Northwest Africa 13035
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13035
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 818 g
Classification
  history:
Recommended:  CK4    [explanation]

This is 1 of 106 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 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13035 (NWA 13035)

Algeria

Find: 2019 May

Classification: Carbonaceous chondrite (CK4)

History: Found by prospectors in the vicinity of Adrar, Algeria, in May 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Relatively closely-packed well-formed, equilibrated chondrules (mostly granular but also PO and BO) are set in a sparse finer grained matrix (~15 vol.%). Both chondrules and matrix contain Cr-magnetite, some of which has minor light orange staining.

Geochemistry: Olivine (Fa31.8±0.2 (range Fa31.6-31.9, N = 7), orthopyroxene (Fs26.2±0.2Wo0.8±0.1 (range 26.0-26.4Wo0.7-0.9, N = 5), augite (Fs13.8Wo39.9; Fs8.2-9.7Wo46.7-47.1; N = 3), plagioclase (An35.0Or3.8), magnetite (Cr2O3 4.1-4.2 wt.%, N = 2).

Classification: Carbonaceous chondrite (CK4).

Specimens: 21 g including one polished thin section at UWB; remainder with anonymous finders.

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:Adrar
Date:2019 May
Mass (g):818
Pieces:2
Class:CK4
Shock stage:S2
Weathering grade:low
Fayalite (mol%):31.8±0.2
Ferrosilite (mol%):26.2±0.2
Wollastonite (mol%):0.8±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21
Type spec location:UWB
Main mass:Anonymous
Comments:Work names DL 1006&1009; 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. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 995 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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