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Northwest Africa 13769
Basic information Name: Northwest Africa 13769
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13769
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 761 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 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13769 (NWA 13769)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was purchased from a dealer in Errachidia, Morocco.

Physical characteristics: Grayish fragment partly covered by fusion crust.

Petrography: The meteorite shows a grayish 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. Few chondrules are surrounded by fine-grained rims. 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:Errachidia, Morocco
Date:P 2020
Mass (g):761
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:low
Fayalite (mol%):18.8±16.1 (0.4-36.9, n=18)
Ferrosilite (mol%):2.4±1.1 (1.3-5.7, n=14)
Wollastonite (mol%):0.9±0.1 (0.6-1.1, n=14)
Magnetic suscept.:4.3
Classifier:A. Greshake, MNB
Type spec mass (g):24.2
Type spec location:MNB
Main mass:Tomasz Jakubowski
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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