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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 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 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 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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