igneous
Pink granite
Granite, chiefly quartz–alkali feldspar–plagioclase with biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, massive rock with salmon-pink feldspar, gray translucent quartz, and dark mica/amphibole; hardness about 6–7 Mohs, vitreous quartz luster, and no consistent cleavage as a whole. The rounded shape appears naturally water-worn or tumbled.
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Physical properties
Coarse-grained, massive rock with salmon-pink feldspar, gray translucent quartz, and dark mica/amphibole; hardness about 6–7 Mohs, vitreous quartz luster, and no consistent cleavage as a whole. The rounded shape appears naturally water-worn or tumbled.
Formation & geological history
An intrusive igneous rock crystallized slowly from silica-rich magma deep in the crust, commonly during Precambrian to Phanerozoic continental pluton formation. Weathering and stream transport likely produced the rounded specimen.
Uses & applications
Widely used as dimension stone, countertops, monuments, building facades, paving, and crushed aggregate; attractive pieces are collected but usually have modest value.
Geological facts
The pink color generally comes from potassium feldspar, while black minerals are biotite or hornblende. Pale veins may represent quartz or feldspar-rich fractures.
Field identification & locations
Identify it by visible interlocking crystals, pink feldspar, gray quartz, and black mica/amphibole; it is common in continental shields and granite plutons worldwide, including India, Brazil, Canada, Scandinavia, and the United States.
