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Northwest Africa 13869
Basic information Name: Northwest Africa 13869
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13869
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 667 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 660 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 28 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13869 (NWA 13869)

(Northwest Africa)

Purchased: 2021 Mar

Classification: Ureilite

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

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a cumulate texture of olivine and pigeonite grains up to 2 mm in sizes. Olivine displays characteristic reduced rims in contact with FeNi-metal or graphite. The meteorite contains flaky graphite and calcite-filled cracks.

Geochemistry: reduced rims in olivine: Fa2.9-4.6; olivine contains 0.57±0.03 wt% Cr2O3 and 0.31±0.01 wt% CaO; pigeonite contains 1.39±0.06 wt% Cr2O3 and 1.72±0.08 wt% Al2O3

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Mar
Mass (g):667.2
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):20.8±0.1 (n=6)
Ferrosilite (mol%):17.5±0.2 (n=6)
Wollastonite (mol%):10.5±0.2 (n=6)
Classifier:A. Greshake, MNB
Type spec mass (g):24.2
Type spec location:MNB
Main mass:Hanno Strufe and Abdelfattah Gharad, Marrakesh, Morocco
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., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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