NWA 4643 ( 273,7 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 |