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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 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 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 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 8746 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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