Diorite

Type Igneous Rock
Texture Phaneritic (Coarse-grained)
Origin Intrusive/Plutonic
Chemical Composition Intermediate
Color Approximately half dark, half white minerals
Mineral Composition SodiumCalcium Plagioclase, Quartz, Hornblende, Biotite
Miscellaneous Salt and Pepper Appearance
Tectonic Environment Convergent Boundary – Intruded into batholiths above Island Arc-type Subduction Zone