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Northwest Africa 8091
Basic information Name: Northwest Africa 8091
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8091
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 21 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 22 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8091 (NWA 8091)

(Northwest Africa)

Purchased: 2013 July

Classification: Ureilite

Petrography: (A. Greshake, MNB) The meteorite shows a characteristic cumulate texture of up to 2-mm sized blocky olivine, orthopyroxene, and rare augite grains. Olivine shows characteristic reduced rims. Carbon is present as graphite.

Geochemistry: Reduced rims in olivine: Fa6.3-9.1; low-Ca pyroxene: Fs10.6Wo4.6; augite: Fs6.5Wo36.7

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2013 July
Mass (g):21
Pieces:2
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):12
Ferrosilite (mol%):10.6; 6.5
Wollastonite (mol%):4.8; 36.7
Classifier:A. Greshake, MNB
Type spec mass (g):4.8
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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