igneous
Pink granite
Granitic rock, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, speckled pink, gray, white, and black; generally Mohs 6–7, with vitreous quartz and feldspar luster, interlocking crystals, and no cleavage as a whole. The rounded shape indicates natural water-wearing or human tumbling.
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Physical properties
Coarse-grained, speckled pink, gray, white, and black; generally Mohs 6–7, with vitreous quartz and feldspar luster, interlocking crystals, and no cleavage as a whole. The rounded shape indicates natural water-wearing or human tumbling.
Formation & geological history
An intrusive igneous rock formed when silica-rich magma cooled slowly deep in Earth’s crust, allowing large crystals to grow; common bodies range from Precambrian to Phanerozoic age.
Uses & applications
Widely used for countertops, building stone, monuments, paving, aggregate, and landscaping; attractive hand specimens have modest collecting value.
Geological facts
Pink color usually comes from potassium feldspar, while dark grains are biotite or hornblende. Granite commonly weathers into rounded boulders through jointing and erosion.
Field identification & locations
Identify it by visible interlocking crystals, abundant pink feldspar, glassy gray quartz, and black mica/amphibole; it is common in continental batholiths worldwide, including India, Brazil, Canada, and the United States.
