Troilite, chromite and ilmenite. Alta'ameem Meteorite. Iraq
125µm
Troilite (brown, high reflectance, right) has crystallized around euhedral pyroxene crystals (right). Pyroxene (grey, centre) shows parallel cleavage and faint internal reflections. Chromite (light grey, centre) encloses a small ilmenite lath (brown, low reflectance, centre) oriented cast-west and both central chromite crystals show faint diffuse brown internal reflections.
Polished thin section, plane polarized light, x 160, oil
