Description
19.3g full slice. Sold in collection box with label/certificate of authenticity.
Northwest Africa 5884 (NWA 5884)
(Northwest Africa)
Purchased: 2009
Classification: Ureilite
History: The meteorite was bought in 2009 from a Moroccan meteorite dealer in Erfoud, Morocco.
Physical characteristics: Brownish individual lacking any fusion crust.
Petrography: The meteorite shows a cumulate texture of coarse up to 1.5 mm sized Cr-rich olivine and pigeonite crystals. It contains flaky graphite; olivine displays characteristic reduced rims.
Geochemistry: reduced rims in olivine: Fa5.8-8.5; Cr2O3 in ol: ~0.6 wt%
Place of purchase:Erfoud, MoroccoDate:P 2009Mass (g):615Pieces:1Class:ureiliteShock stage:lowWeathering grade:moderateFayalite (mol%):20.2±0.2 (n=17)Ferrosilite (mol%):17.5±0.1 (n=13)Wollastonite (mol%):5.9±0.1 (n=13)Classifier:A. Greshake, MNBType spec mass (g):20Type spec location:MNBMain mass:Fabien KuntzComments:Submitted by Ansgar Greshake
