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Northwest Africa 13850
Basic information Name: Northwest Africa 13850
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13850
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 856 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 573 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 28 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13850 (NWA 13850)

(Northwest Africa)

Purchased: January, 2021

Classification: Ureilite

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

Physical characteristics: Dark-grayish rock without fusion crust.

Petrography: The meteorite shows a coarse-grained cumulate texture of olivine and pigeonite grains up to 2.5 mm in sizes. Olivine and pyroxene display characteristic reduced rims and the meteorite contains flaky graphite.

Geochemistry: reduced rims in olivine: Fa3.5-4.6; olivine contains 0.82±0.04 wt% Cr2O3 and 0.42±0.01 wt% CaO; reduced rims in pyroxene: Fs6.4-7.6Wo7.5-8.5; pigeonite contains 1.10±0.03 wt% Cr2O3 and 0.31±0.01 wt% Al2O3

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P January, 2021
Mass (g):856
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):15.6±0.1 (n=6)
Ferrosilite (mol%):13.2±0.1 (n=6)
Wollastonite (mol%):8.4±0.1 (n=6)
Classifier:A. Greshake, MNB
Type spec mass (g):23.2
Type spec location:MNB
Main mass:Hanno Strufe
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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7741 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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