Earthwatcher's photos with the keyword: garnet

A hand specimen of Eclogite - a high temperature, high pressure, metamorphic rock formed at great depth, ~ 45 km, at the junction between the lithosphere and the mantle. The red garnet (almandine) and the green pyroxene (omphacite) make this rock particularly striking. Width of specimen: 9 cm. Provenance of specimen: unknown (from rescued, unwanted, university teaching collection) :-(