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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:
Recommended:  CM2    [explanation]

This is 1 of 546 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 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
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 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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