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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:
Meteoritical Bulletin:  MB 111  (2023)  CV3
Recommended:  CV3    [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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