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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:
Recommended:  CO3    [explanation]

This is 1 of 628 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 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 Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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