igneous
Pink granite with a white feldspar/quartz inclusion
Granite; chiefly quartz (SiO₂), potassium feldspar, plagioclase, and biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, pink to reddish-brown, with a white crystalline patch; typically Mohs 6–7, vitreous to dull luster, interlocking crystals, and no strong cleavage as a whole. The rounded shape appears naturally weathered or polished.
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Physical properties
Coarse-grained, pink to reddish-brown, with a white crystalline patch; typically Mohs 6–7, vitreous to dull luster, interlocking crystals, and no strong cleavage as a whole. The rounded shape appears naturally weathered or polished.
Formation & geological history
Intrusive felsic magma slowly cooled deep underground, allowing large crystals to form; commonly Precambrian to younger, depending on source. Weathering and transport rounded the specimen.
Uses & applications
Used extensively as dimension stone, countertops, monuments, paving, and aggregate; attractive pieces are collected as decorative specimens. This small ordinary specimen has minimal gem value.
Geological facts
Pink color generally comes from potassium feldspar, while the white area may be quartz or feldspar; close inspection or a hardness test is needed for certainty.
Field identification & locations
Identify granite by visible interlocking quartz and feldspar grains and its inability to scratch glass easily except with quartz-rich grains. Common worldwide, especially in continental shields and mountain batholiths.
