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Northwest Africa 13711
Basic information Name: Northwest Africa 13711
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13711
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 26.3 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  CM2
Recommended:  CM2    [explanation]

This is 1 of 641 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 20 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13711 (NWA 13711)

(Northwest Africa)

Purchased: March 2020

Classification: Carbonaceous chondrite (CM2)

Physical characteristics: A single crusted stone broken in multiple fragments. Cut surface reveals a dark interior with small chondrules.

Petrography: (J. Gattacceca, CEREGE) Chondrite with chondrules (apparent average diameter 300±160 µm, n=27) and mineral clasts set in an abundant (79 vol%, by point counting, n=286), fine-grained, iron-rich matrix. Chondrules have fine grained dust rims.

Geochemistry: Olivine Fa13.2±16.6, range Fa0.4-44.7 (n=9), Cr2O3 in ferroan olivine 0.46±0.14 (n=6). Pyroxene Fs1.3Wo4.0 and Fs7.5Wo4.6 (n=2). Defocused matrix analyses FeO = 35.2 wt%, analytical total 84.2 wt% (n=2). The low total reveals the presence of hydrous phases in the matrix.

Classification: Carbonaceous chondrite (CM2)

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tindouf, Algeria
Date:P Mar 2020
Mass (g):26.32
Pieces:1
Class:CM2
Fayalite (mol%):13.2±16.6 (n=9)
Magnetic suscept.:3.88
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):5.68
Type spec location:CEREGE
Main mass:Kuntz
Finder:anonymous
Comments:work name K506; 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 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
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 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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