igneous
Pink granite
Granite, a coarse-grained felsic intrusive igneous rock; chiefly quartz, potassium feldspar, plagioclase, and minor mica
AI-generated identification · may be incorrectPinkish, speckled, massive rock with a granular texture; minerals are typically Mohs 6–7 (quartz is 7). Granite has interlocking crystals and no cleavage as a whole; the pictured specimen’s rounded form obscures its grain size.
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Physical properties
Pinkish, speckled, massive rock with a granular texture; minerals are typically Mohs 6–7 (quartz is 7). Granite has interlocking crystals and no cleavage as a whole; the pictured specimen’s rounded form obscures its grain size.
Formation & geological history
Formed when silica-rich magma cooled slowly underground, allowing crystals to grow. Granite bodies occur across many geological ages, from Precambrian to recent geologic periods.
Uses & applications
Commonly used for building stone, paving, monuments, countertops, and landscaping; ordinary rounded specimens are mainly decorative or collectible.
Geological facts
Pink color commonly comes from potassium feldspar. Granite is widespread in continental crust and is often exposed after erosion removes overlying rock.
Field identification & locations
Look for visible interlocking light and dark grains, with quartz typically glassy and feldspar pink or white; confirm with a fresh surface if possible. Found in granitic mountain regions and glacial or river deposits; this rounded piece may be naturally weathered or tumbled.
