Gabbro

Type	Igneous Rock
Texture	Phaneritic (Coarse-grained)
Origin	Intrusive/Plutonic
Chemical Composition	Mafic
Color	Dark Gray
Mineral Composition	Calcium Plagioclase, Pyroxene
Miscellaneous	Mostly Calcium Plagioclase
Tectonic Environment	Lower part of continental crust and intruded into batholiths above subduction zones during Archean and Proterozoic Eons