igneous
Pink granite / granitic pegmatite
Coarse-grained felsic granitoid; chiefly quartz (SiO₂), potassium feldspar, plagioclase, and minor mica/iron oxides
AI-generated identification · may be incorrectHardness about 6–7 Mohs; pale pink, white, gray, and reddish mottled color; mostly vitreous quartz and pearly feldspar luster; interlocking crystalline texture with no obvious cleavage as a whole. The rounded surface appears naturally weathered or tumbled.
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Physical properties
Hardness about 6–7 Mohs; pale pink, white, gray, and reddish mottled color; mostly vitreous quartz and pearly feldspar luster; interlocking crystalline texture with no obvious cleavage as a whole. The rounded surface appears naturally weathered or tumbled.
Formation & geological history
Formed by slow cooling of silica-rich magma deep in the crust, producing large crystals; typically Precambrian to Mesozoic depending on locality. Weathering and transport may have rounded the specimen.
Uses & applications
Widely used as dimension stone, countertops, paving, monuments, aggregate, and decorative stone; attractive pieces are collected but usually have modest value.
Geological facts
The pink color commonly comes from potassium feldspar, while translucent gray areas are quartz and dark flecks are biotite or amphibole. It may alternatively be a quartz-rich pegmatite if crystals are unusually coarse.
Field identification & locations
Identify it by visible interlocking quartz and feldspar grains, pink feldspar, hardness sufficient to scratch glass, and lack of layering or foliation. Common worldwide in continental shields and granite terrains.
