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Northwest Africa 14331
Basic information Name: Northwest Africa 14331
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14331
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 278 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 642 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 11 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14331 (NWA 14331)

(Northwest Africa)

Purchased: 2021 May

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was purchased from a group of meteorite hunters in Nouadhibou, Mauritania, in May, 2021.

Physical characteristics: Dark brownish rock with some fusion crust.

Petrography: The meteorite shows a dark brownish interior and is predominantly composed of abundant small chondrules (mean diameter of about 180 µm), CAIs, and mineral fragments set into a fine-grained matrix. Opaque phases are partly altered metal and troilite. Some regions show brownish staining due to terrestrial weathering.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P 2021 May
Mass (g):278
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):17.8±21.8 (1.2-64.6, n=25)
Ferrosilite (mol%):1.3±0.2 (0.9-1.7, n=17)
Wollastonite (mol%):0.9±0.2 (0.7-1.5, n=17)
Classifier:A. Greshake, MNB
Type spec mass (g):22.2
Type spec location:MNB
Main mass:Salamu Ali
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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