igneous
Polished pink granite
Granite, a coarse-grained felsic intrusive igneous rock
AI-generated identification · may be incorrectPink and gray speckled, with visible quartz, feldspar, and dark mica or amphibole; interlocking crystals and no cleavage as a whole. Hardness is roughly 6–7 Mohs; polished surface has a subdued shine.
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Physical properties
Pink and gray speckled, with visible quartz, feldspar, and dark mica or amphibole; interlocking crystals and no cleavage as a whole. Hardness is roughly 6–7 Mohs; polished surface has a subdued shine.
Formation & geological history
Magma cooled slowly underground, allowing large crystals to form; granite occurs in continental crust and ranges widely in age, from ancient Precambrian to younger intrusions.
Uses & applications
Used as dimension stone, countertops, paving, monuments, and decorative objects; this small polished specimen is mainly for collecting or display.
Geological facts
Pink color commonly comes from potassium feldspar, while gray or glassy grains are quartz and dark flecks are typically biotite or amphibole.
Field identification & locations
Identify by its coarse, interlocking pink feldspar, quartz, and dark mineral grains; common in continental mountain belts worldwide. The rounded edges and smooth surface indicate human polishing.
