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Northwest Africa 13724
Basic information Name: Northwest Africa 13724
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13724
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 476 g
Classification
  history:
Recommended:  CR2    [explanation]

This is 1 of 175 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13724 (NWA 13724)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CR2)

Physical characteristics: Brown stone. Cut face reveals a brown interior with large chondrules and metal.

Petrography: (J. Gattacceca, CEREGE) Chondrite with large chondrules (apparent average diameter 1200±250 µm, n=14) set in an abundant fine-grained, iron-rich matrix. Abundant metal as large blebs decorating chondrules. Sulfides are present in the matrix.

Geochemistry: Olivine Fa1.7±0.5, range Fa0.8-2.6, Cr2O3 0.55±0.15, n=9. Low-Ca pyroxene Fs2.3Wo0.8 (n=1). Defocused analyses of the matrix FeO = 39.7±3.3 wt%, analytical total 83.7±1.5 wt% (n=3). The low analytical total reveals the presence of hydrous phases in the matrix.

Classification: Carbonaceous chondrite (CR2)

Specimens: Type speciment at CEREGE. Main mass with Labenne

Data from:
  MB110
  Table 0
  Line 0:
Date:P 2020
Mass (g):476
Pieces:1
Class:CR2
Weathering grade:moderate
Fayalite (mol%):1.7±0.5 (n=9)
Ferrosilite (mol%):2.3 (n=1)
Wollastonite (mol%):0.8
Magnetic suscept.:4.93
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20
Type spec location:CEREGE
Main mass:Labenne
Finder:anonymous
Comments:work name LL120520a; 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
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 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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