igneous
Pink Granite
Phaneritic intrusive igneous rock (Granite)
Phaneritic (coarse-grained) texture, Mohs hardness 6 to 7, pink/reddish color from orthoclase feldspar, white/gray quartz, and black biotite/hornblende. Dull to vitreous luster.
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Physical properties
Phaneritic (coarse-grained) texture, Mohs hardness 6 to 7, pink/reddish color from orthoclase feldspar, white/gray quartz, and black biotite/hornblende. Dull to vitreous luster.
Formation & geological history
Formed by the slow cooling of silica-rich magma deep underground (plutonic). This specific specimen shows rounding from water erosion or glacial transport.
Uses & applications
Extensively used in construction for countertops, monuments, flooring, and decorative aggregate. Also used as road base and railway ballast.
Geological facts
Granite makes up much of the Earth's continental crust. Its pink color is determined by the concentration of potassium feldspar. It is one of the hardest and most durable natural stones.
Field identification & locations
Identified by its salt-and-pepper appearance with distinct interlocking crystals. Look for the characteristic pink orthoclase mixed with translucent quartz. Commonly found in mountain ranges and glacial till.
