| Price : 3600€ |
Northwest Africa 14582 (NWA 14582)
(Northwest Africa)
Purchased: 2021
Classification: Enstatite achondrite (Aubrite)
History: The meteorite was purchased from a meteorite dealer in Morocco.
Physical characteristics: Eight beige to light grayish fragments with abundant black patchy coatings and veinlets. Some rusty, orange colored spots are exposed at the surfaces.
Petrography: The meteorite is a coarse-grained breccia predominantly composed of up to 1 cm sized enstatite grains with minor diopside inclusions. Opaque phases include Ti-bearing troilite, daubréelite, brezinaite, and rare Ni-Si-poor kamacite. Enstatite shows several sets of planar fractures and strong undulatory extinction. Neither forsterite nor plagioclase have been found in the section studied.
Geochemistry: enstatite: Fs0.05±0.02Wo0.9±0.1 (Fs0.00-0.08Wo0.6-1.0, n=10); diopside: Fs0.2±0.1Wo44.9±0.6 (Fs0.1-0.3Wo44.0-45.7, n=10); troilite (Ti = 1.54±0.11 wt.%, Cr = 0.25±0.02 wt%, N=3); kamacite (Ni = 2.47±0.08 wt%, Si = 0.04±0.02 wt%, N=5)
