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Northwest Africa 6823
Basic information Name: Northwest Africa 6823
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6823
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 48 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 20 Oct 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 6823 (NWA 6823)

(Northwest Africa)

Purchased: 2010

Classification: Ureilite

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

Physical characteristics: Brownish fragment without fusion crust.

Petrography: The meteorite shows a protogranular texture of up to 3 mm sized olivine and pigeonite grains. Olivine displays characteristic reduced rims and the meteorite contains abundant flaky graphite.

Geochemistry: reduced rims in olivine: Fa2.3-5.9; olivine contains 0.55±0.03 wt% Cr2O3 and 0.33±0.01 wt% CaO

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2010
Mass (g):48
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):9.8±0.1 (n=9)
Ferrosilite (mol%):8.9±0.1 (n=11)
Wollastonite (mol%):9.5±0.1 (n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):9.8
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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