Porphyritic Granite

Type	Igneous Rock
Texture	Porphyritic
Origin	Intrusive/Plutonic
Chemical Composition	Felsic
Color	Predominately white
Mineral Composition	Potassium Feldspar, Quartz, Sodium Plagioclase, Biotite, Hornblende
Miscellaneous	Very large Potassium Feldspar Phenocrysts in a phaneritic (coarse-grained) groundmass
Tectonic Environment	Convergent Boundary – Intruded into batholiths above Andean-type Subduction Zone

Type	Igneous Rock
Texture	Porphyritic
Origin	Intrusive/Plutonic
Chemical Composition	Felsic
Color	Predominately pink
Mineral Composition	Potassium Feldspar, Quartz, Sodium Plagioclase, Biotite, Hornblende
Miscellaneous	Potassium Feldspar Phenocrysts in a phaneritic (coarse-grained) groundmass
Tectonic Environment	Convergent Boundary – Intruded into batholiths above Andean-type Subduction Zone