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Northwest Africa 11284
Basic information Name: Northwest Africa 11284
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11284
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 362 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 660 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 31 May 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11284 (NWA 11284)

(Northwest Africa)

Purchased: 2017 Jan

Classification: Ureilite

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

Physical characteristics: Brownish individual lacking any fusion crust.

Petrography: The meteorite shows a cumulate texture of up to 1.5 mm sized olivine and orthopyroxene grains. It contains flaky graphite; olivine displays characteristic reduced rims.

Geochemistry: reduced rims in olivine: Fa0.8-6.8; Cr2O3 in ol: ~0.6 wt%

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Guelmin, Morocco
Date:P 2017 Jan
Mass (g):362
Pieces:1
Class:Ureilite
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):12.3±0.1 (n=15)
Ferrosilite (mol%):10.8±0.2 (n=32)
Wollastonite (mol%):3.6±0.1 (n=32)
Classifier:A. Greshake, MNB
Type spec mass (g):21.5
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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