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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 516 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         
Space Jewels   
Geography: 
Coordinates:Unknown.

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

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