English: Meta-eclogite from Turkey. (~6.0 centimeters across at its widest)

Eclogite is a scarce, crystalline-textured, very high-grade metamorphic rock. It is dominated by green-colored omphacite pyroxene and red-colored pyrope or almandine garnet. Eclogite has the same chemistry as basalts and gabbros, which are oceanic crustal rocks, but has a different mineralogy. Eclogites form by very high grade metamorphism of oceanic crust at mantle depths along subduction zones. Uplift of eclogites back to the surface often involves some retrograde metamorphism and the formation of new minerals, resulting in retrograde eclogites.

The eclogite seen here has been metamorphosed - "meta-eclogite". The green material is smaragdite, which is chromian actinolite amphibole. The grayish matrix is attributed to garnet, quartz?, and feldspar?.

Locality: unrecorded / undisclosed site in Arguvan District, northeastern Malatya Province, eastern Turkey