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Northwest Africa 14857
Basic information Name: Northwest Africa 14857
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14857
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 13 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 588 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14857 (NWA 14857)

(Northwest Africa)

Purchased: January, 2022

Classification: Carbonaceous chondrite (CV3)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in January, 2022.

Physical characteristics: Brownish fragment without fusion crust.

Petrography: Carbonaceous chondrite composed of large chondrules (mean diameter about 0.9 mm; up to 1.5 mm in diameter), CAIs (up to 2 mm in diameter), and amoeboid olivine aggregates all set into a fine-grained dark brownish matrix. Several chondrules show brownish staining due to terrestrial alteration. Opaque phases include magnetite, sulfides, and their respective alteration products.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P January, 2022
Mass (g):13
Pieces:1
Class:CV3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):9.7±8.4 (0.6-28.2, n=18)
Ferrosilite (mol%):1.3±0.2 (1.0-1.6, n=11)
Wollastonite (mol%):1.4±0.9 (0.9-3.6, n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):2.8
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. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8420 approved meteorites from (Northwest Africa) (plus 1900 unapproved names)

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