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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 183 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 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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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