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Northwest Africa 15737
Basic information Name: Northwest Africa 15737
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15737
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 287 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 79 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 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15737 (NWA 15737)

Algeria

Find: 2021

Classification: Carbonaceous chondrite (CK3)

History: Found in Algeria, in the Erg Chech area, in 2021

Physical characteristics: A dark irregular stone. Cut surface reveals a dark grey interior with large chondrules and abundant matrix.

Petrography: (J. Gattacceca, CEREGE) Chondrite with large chondrules and CAIs to 2 mm set in an abundant recrystallized matrix with average plagioclase size 70 µm. Magnetite is abundant in matrix, as blebs to 300 µm, and in chondrules, as blebs to 200 µm and along chondrule rims. Sulfides (pentlandite) are rare due to terrestrial weathering. No metal was osberved.

Geochemistry: Olivine Fa23.2±15.8, range Fa0.5-37.2, NiO = 0.23±0.19 wt% (n=8). Pyroxene Fs15.1Wo50.2 (n=1). Plagioclase An30.1Ab68.2Or1.7 (n=1). Magnetite Cr2O3 2.91±0.44 wt% (n=4).

Classification: Carbonaceous chondrite (CK3). CK3 based on the scatter in olivine composition, and the Cr2O3 content of magnetite.

Specimens: Type specimen at CEREGE, main mass with Isabelle Pothier

Data from:
  MB112
  Table 0
  Line 0:
Date:2021
Mass (g):287
Pieces:1
Class:CK3
Weathering grade:high
Fayalite (mol%):23.2±15.8 (n=8)
Magnetic suscept.:4.39
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20
Type spec location:CEREGE
Main mass:Isabelle Pothier
Finder:anonymous
Comments:work name CM165; submitted by Jérôme Gattacceca
Institutions
   and collections		 CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1273 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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