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Northwest Africa 15020
Basic information Name: Northwest Africa 15020
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15020
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 456 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  CO3
Recommended:  CO3    [explanation]

This is 1 of 646 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 20 Jun 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15020 (NWA 15020)

(Northwest Africa)

Purchased: May 2022

Classification: Carbonaceous chondrite (CO3)

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

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite shows a dark brownish to reddish interior and is predominantly composed of abundant small chondrules, CAIs, and mineral fragments set into an abundant 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.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P May 2022
Mass (g):456
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):21.3±18.7 (0.6-44.8, n=24)
Ferrosilite (mol%):1.3±0.5 (0.8-2.7, n=11)
Wollastonite (mol%):2.3±1.3 (0.8-4.7, n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):21.1
Type spec location:MNB
Main mass:Polandmet - Marcin Cimala
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9772 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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