igneous
Polished pink granite
Granite, a coarse-grained felsic intrusive igneous rock, composed mainly of feldspars, quartz, and dark mica or amphibole
AI-generated identification · may be incorrectPink-orange feldspar with gray, glassy quartz and black mineral grains; coarse, interlocking crystals and polished luster. Typical hardness is about 6–7 Mohs; granite has no prominent cleavage as a whole and specific gravity around 2.6–2.7.
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Physical properties
Pink-orange feldspar with gray, glassy quartz and black mineral grains; coarse, interlocking crystals and polished luster. Typical hardness is about 6–7 Mohs; granite has no prominent cleavage as a whole and specific gravity around 2.6–2.7.
Formation & geological history
Forms when silica-rich magma cools slowly beneath the surface, allowing visible crystals to grow. Granite occurs in ancient continental crust, from Precambrian to recent geological ages.
Uses & applications
Used for countertops, building and paving stone, monuments, and decorative polished specimens.
Geological facts
The pink color commonly comes from potassium feldspar; exact mineral proportions vary among granites.
Field identification & locations
Identify by its visible interlocking grains, pale quartz, pink feldspar, and scattered dark minerals; it is widespread in continental mountain belts and exposed ancient shields. This appears to be a polished, rounded specimen.
