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Northwest Africa 8503
Basic information Name: Northwest Africa 8503
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8503
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 45 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 516 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 14 Sep 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8503 (NWA 8503)

(Northwest Africa)

Purchased: 2013

Classification: Ureilite

Petrography: The meteorite displays a cumulate texture with abundant 120° grain boundaries. In the two thin sections studied only olivine and no pyroxene was found. It contains flaky graphite; olivine displays characteristic reduced rims.

Geochemistry: reduced olivine rims: Fa3.6-12.6; Cr2O3 in olivine: about 0.7 wt%

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2013
Mass (g):45
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):21.7
Classifier:A. Greshake, MNB
Type spec mass (g):10
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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