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Northwest Africa 5904
Basic information Name: Northwest Africa 5904
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5904
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 70.2 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 604 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 16 Mar 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 5904 (NWA 5904)

(Northwest Africa)

Purchased: 2008

Classification: Ureilite

History: The meteorite was bought in 2008 from a meteorite dealer in Erfoud, Morocco.

Petrography: The meteorite shows a characteristic cumulate texture of 0.5 to 2 mm sized olivine, pigeonite and rare orthopyroxene crystals. Olivine shows pronounced reduced rims and the meteorite contains flaky graphite attesting to low degree of shock.

Geochemistry: orthopyroxene: Fs17.9±0.2Wo4.6±0.1 (Fs8.4-16.5Wo4.6-4.7, n=5); pigeonite: Fs12.5±2Wo10.2±1.8 (Fs28.7-30Wo8-13.9, n=14); reduced rims in olivine: Fa2.4-13.7; Cr2O3 in ol: ~0.5 wt%

Data from:
  MB105
  Table 0
  Line 0:
Origin or pseudonym:SJS-08046
Place of purchase:Erfoud, Morocco
Date:P 2008
Mass (g):70.2
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):20.8±0.8 (n=10)
Ferrosilite (mol%):17.9; 12.5
Wollastonite (mol%):4.6; 10.2
Classifier:A. Greshake, MNB
Type spec mass (g):14.4
Type spec location:MNB
Main mass:Marc Jost
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann Photo added 19 Apr 2022
Photo added 19 Apr 2022
Photo added 19 Apr 2022
Space Jewels   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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