igneous
Pink granite
Coarse-grained felsic intrusive rock, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende
AI-generated identification · may be incorrectTypically Mohs 6–7; pink, salmon, gray, and black speckled appearance, with a granular texture and vitreous quartz/feldspar luster. Crystals are interlocking and lack cleavage as a rock, though feldspars show cleavage.
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Physical properties
Typically Mohs 6–7; pink, salmon, gray, and black speckled appearance, with a granular texture and vitreous quartz/feldspar luster. Crystals are interlocking and lack cleavage as a rock, though feldspars show cleavage.
Formation & geological history
Formed by slow cooling and crystallization of silica-rich magma deep in the continental crust, commonly during Precambrian to Phanerozoic intrusive events. The specimen may be weathered or fractured from surface exposure.
Uses & applications
Widely used as dimension stone, countertops, flooring, monuments, building aggregate, and landscaping rock; attractive pieces are collected but usually have modest value.
Geological facts
Pink color generally comes from potassium feldspar, while translucent gray grains are quartz and dark flakes are biotite or amphibole. Granite is a rock name based on texture and mineral proportions, not a single mineral composition.
Field identification & locations
Identify it by visible interlocking pink feldspar, gray-clear quartz, and black mica or amphibole; it is nonvesicular and does not fizz with dilute hydrochloric acid. Common worldwide, especially in continental mountain belts and shield regions.
