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Northwest Africa 15453
Basic information Name: Northwest Africa 15453
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15453
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 70 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 658 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 4 Dec 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15453 (NWA 15453)

(Northwest Africa)

Purchased: 2022

Classification: Ureilite

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

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite shows a protogranular texture of up to 2 mm angular to subrounded olivine and pigeonite crystal. Olivine displays characteristic reduced rims. The meteorite contains flaky graphite, troilite, and mostly altered kamacite.

Geochemistry: reduced rims in olivine: Fa2.9-6.6, n=3; olivine contains 0.66±0.30 wt% Cr2O3 and 0.33±0.02 wt% CaO; pigeonite contains 1.12±0.03 wt% Cr2O3 and 0.65±0.02 wt% Al2O3.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022
Mass (g):70
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):16.5±0.1 (n=10)
Ferrosilite (mol%):14.5±0.1 (n=10)
Wollastonite (mol%):6.7±0.1 (n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):14
Type spec location:MNB
Main mass:Mateusz Szyszko
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. 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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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