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Northwest Africa 15397
Basic information Name: Northwest Africa 15397
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15397
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 283 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 15397 (NWA 15397)

(Northwest Africa)

Purchased: 2022

Classification: Ureilite

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

Physical characteristics: Dark brownish fragment with some fusion crust.

Petrography: The meteorite shows a protogranular texture of up to 2.5 mm sized olivine and pigeonite grains both displaying reduced Mg-rich rims associated with fine-grained FeNi-metal. The meteorite contains graphite. Iron oxide veins often decorate grain boundaries.

Geochemistry: reduced rims in olivine: Fa3.5-7.0, n=3; olivine contains 0.54±0.03 wt% Cr2O3 and 0.29±0.01 wt% CaO; reduced rims in pyroxene: Fs1.1-2.0Wo1.4-2.0, n=4; pyroxene contains 1.13±0.03 wt% Cr2O3 and 1.26±0.04 wt% Al2O3

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Guelmim, Morocco
Date:P 2022
Mass (g):283.4
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):20.3±0.1 (n=10)
Ferrosilite (mol%):17.4±0.1 (n=10)
Wollastonite (mol%):8.5±0.1 (n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Mohamed Naji
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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