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Northwest Africa 15722
Basic information Name: Northwest Africa 15722
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15722
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 179.7 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  CO3
Recommended:  CO3    [explanation]

This is 1 of 653 approved meteorites (plus 2 unapproved names) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15722 (NWA 15722)

(Northwest Africa)

Purchased: November, 2022

Classification: Carbonaceous chondrite (CO3)

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

Physical characteristics: Dark brownish rock lacking fusion crust.

Petrography: The meteorite shows a dark 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 170 µm. Opaque phases are metal and troilite mostly altered to iron oxides and hydroxides.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Ouarzazate, Morocco
Date:P November, 2022
Mass (g):179.7
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):19.4±14.9 (0.4-37.0, n=20)
Ferrosilite (mol%):2.8±0.5 (2.1-3.7, n=12)
Wollastonite (mol%):1.1±0.1 (1.0-1.3, n=12)
Classifier:A. Greshake, MNB
Type spec mass (g):27.9
Type spec location:MNB
Main mass:Fabien Kuntz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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