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Northwest Africa 13970
Basic information Name: Northwest Africa 13970
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13970
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 500 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 573 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 18 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13970 (NWA 13970)

(Northwest Africa)

Purchased: 5 Jan 2021

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was acquired by the mass holder in Ain Ben Tili, Mauritania.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a brownish interior and is predominantly composed of abundant small chondrules, CAIs, and mineral fragments set into a fine-grained matrix. Chondrules have a mean diameter of about 0.2 mm and are partly surrounded by fine-grained dust rims. Opaque phases are often altered metal and troilite.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Ain Ben Tili, Mauritania
Date:P 5 Jan 2021
Mass (g):500
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):15.3±17.3 (0.8-46.6, n=16)
Ferrosilite (mol%):2.7±2.4 (0.9-7.9, n=14)
Wollastonite (mol%):1.0±0.2 (0.7-1.3, n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):22
Type spec location:MNB
Main mass:Said Muftha Bachir
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 7810 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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