NWA 4643 ( 196,1 g )

Northwest Africa 4643 (NWA 4643)
(Northwest Africa)
Purchased: 2006
Classification: Enstatite chondrite (EL6)
History: The meteorite was found by an anonymous finder in northwest Africa and bought by the main mass holder in Erfoud, Morocco.
Physical characteristics: Two brownish fragments without fusion crust weighing together 995.3 g.
Petrography: The meteorite displays a recrystallized texture of dominantly almost pure enstatite; no chondrules found in the section studied. Sulfides and FeNi metal are heavily oxidized.
Geochemistry: Pyroxene, Fs0.1-0.7. The few unweathered FeNi metal shows ~0.5 wt% Si.
Classification: Enstatite chondrite (EL6); low degree of shock, high degree of weathering.
Specimens: 21.4 g plus one polished thin section are on deposit at MNB.
 
Place of purchase:
Erfoud, Morocco
Date:
P 2006
Mass (g):
995.3
Pieces:
2
Class:
EL6
Shock stage:
low
Weathering grade:
high
Ferrosilite (mol%):
0.3 (0.1-0.7)
Classifier:
A. Greshake, MNB
Type spec mass (g):
21.4
Type spec location:
MNB
Main mass:
Hanno Strufe
Comments:
Submitted by Ansgar Greshake