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Northwest Africa 13208
Basic information Name: Northwest Africa 13208
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13208
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 164.8 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 531 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 29 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13208 (NWA 13208)

(Northwest Africa)

Purchased: 2019

Classification: Ureilite

History: The meteorite was purchased from a Morrocan dealer at the mineral show in Munich, Germany.

Physical characteristics: Three dark brownish rocks without fusion crust.

Petrography: The meteorite shows a characteristic cumulate texture of typically 1.5 and up to 2 mm sized olivine and pigeonite grains. Olivine and pigeonite are enriched in Cr2O3 and display both typical reduced rims. The meteorite contains graphite.

Geochemistry: reduced rims in olivine: Fa1.7-2.0; olivine contains 0.52±0.02 wt% Cr2O3 and 0.36±0.01 wt% CaO; reduced rims in pyroxene: Fs10.9-15.0Wo4.4-10.1; pigeonite contains 0.87±0.02 wt% Cr2O3 and 0.68±0.02 wt% Al2O3

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2019
Mass (g):164.8
Pieces:3
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):21.2±0.1 (n=11)
Ferrosilite (mol%):17.6±0.1 (n=11)
Wollastonite (mol%):9.4±0.1 (n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):20.9
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. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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