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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 616 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 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 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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