igneous
Polished porphyritic granite (likely pink granite)
Feldspar–quartz–biotite granite; exact identification requires testing
AI-generated identification · may be incorrectPink, rounded and polished, with coarse dark mineral inclusions and lighter feldspar-rich groundmass. Hardness is about 6–7 Mohs; vitreous to dull luster, interlocking granular crystals, and no prominent cleavage as a whole rock.
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Physical properties
Pink, rounded and polished, with coarse dark mineral inclusions and lighter feldspar-rich groundmass. Hardness is about 6–7 Mohs; vitreous to dull luster, interlocking granular crystals, and no prominent cleavage as a whole rock.
Formation & geological history
Formed when silica-rich magma cooled slowly deep underground, allowing large crystals to grow; commonly Precambrian to younger in age. The rounded form appears human-shaped or naturally water-worn and polished.
Uses & applications
Used widely for countertops, building stone, monuments, paving, and decorative specimens; this small piece has modest display value.
Geological facts
The pink color commonly comes from potassium feldspar, while dark patches may be biotite, amphibole, or mafic enclaves. Granite is defined by abundant quartz and alkali feldspar, though the image alone cannot confirm exact composition.
Field identification & locations
Common in continental crust and found worldwide, including India, Brazil, Scandinavia, and North America. Identify it by visible interlocking crystals, pink feldspar, gray/clear quartz, and a scratch resistance near glass; copper-colored objects nearby are not part of the specimen.
