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Northwest Africa 14097
Basic information Name: Northwest Africa 14097
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14097
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 39.3 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 614 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 18 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14097 (NWA 14097)

(Northwest Africa)

Purchased: 2021 Apr

Classification: Carbonaceous chondrite (CM2)

Physical characteristics: Small sub-cm dark fragments.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter 290±160 µm, n=25) set in a abundant fine-grained iron-rich matrix (72 vol% by point counting, n=265). Opaque minerals are sulfides, magnetite and rare metal.

Geochemistry: Olivine Fa12.3±18.9, range Fa1.4-44.9 (n=4). Low-Ca pyroxene Fs1.5Wo2.8 (n=2). Defocused eletron microprobe analyses of the matrix give analytical totals of 79.5 wt% and FeO 33.7 wt%.

Classification: Carbonaceous chondrite (CM2). The low analytical totals in the matrix indicate the presence of hydrous phases.

Specimens: Type specimen at CEREGE. Main mass with Kuntz

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tindouf, Algeria
Date:P 2021 Apr
Mass (g):39.3
Pieces:many
Class:CM2
Fayalite (mol%):12.3±18.9 (n=4)
Ferrosilite (mol%):1.5 (n=2)
Wollastonite (mol%):2.8
Magnetic suscept.:4.01
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):8.3
Type spec location:CEREGE
Main mass:Kuntz
Finder:anonymous
Comments:work name K537; 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 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 8744 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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