igneous
Pink granite
Granite, predominantly quartz–feldspar–mica
AI-generated identification · may be incorrectCoarse-grained, pale pink to reddish rock with gray-white quartz and dark mica; vitreous quartz and feldspar luster, interlocking crystals, no foliation. Hardness is approximately 6–7 Mohs; cleavage occurs in feldspar, while quartz has none.
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Physical properties
Coarse-grained, pale pink to reddish rock with gray-white quartz and dark mica; vitreous quartz and feldspar luster, interlocking crystals, no foliation. Hardness is approximately 6–7 Mohs; cleavage occurs in feldspar, while quartz has none.
Formation & geological history
Intrusive igneous rock formed when silica-rich magma slowly cooled and crystallized deep within Earth’s crust, commonly during Precambrian to Phanerozoic mountain-building events.
Uses & applications
Widely used as dimension stone, countertops, monuments, building facades, paving, and aggregate; attractive hand specimens have modest collecting value.
Geological facts
The pink color generally comes from potassium feldspar, while black flecks are biotite or hornblende. Its visible interlocking grains distinguish it from volcanic rhyolite, which is usually much finer-grained.
Field identification & locations
Identify it by its speckled, crystalline texture and hardness: quartz commonly scratches glass, and feldspar is typically pink with two cleavage directions. Common worldwide, especially in large continental batholiths and shields.
