Meteoritical Bulletin: Entry for Northwest Africa 5904

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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: 70.2 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 630 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 16 Mar 2016

Writeup

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: Fs_17.9±0.2Wo_4.6±0.1(Fs_8.4-16.5Wo_4.6-4.7, n=5); pigeonite: Fs_12.5±2Wo_10.2±1.8(Fs_28.7-30Wo_8-13.9, n=14); reduced rims in olivine: Fa_2.4-13.7; 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:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Space Jewels

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9128 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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