igneous
Weathered granite (probable)
Granite; quartz–feldspar–mica plutonic rock
AI-generated identification · may be incorrectCoarse, speckled texture with pale pink/orange feldspar, gray quartz, and dark biotite or hornblende; generally Mohs 6–7, vitreous to dull luster, massive structure, and no cleavage as a whole. The surface appears strongly weathered and possibly iron-stained.
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Physical properties
Coarse, speckled texture with pale pink/orange feldspar, gray quartz, and dark biotite or hornblende; generally Mohs 6–7, vitreous to dull luster, massive structure, and no cleavage as a whole. The surface appears strongly weathered and possibly iron-stained.
Formation & geological history
Formed when silica-rich magma crystallized slowly deep in the continental crust, typically during Precambrian or younger plutonic events; weathering rounded and discolored this fragment.
Uses & applications
Used widely as dimension stone, countertops, monuments, aggregate, and paving; attractive polished pieces may be collected but this specimen is not gem-grade.
Geological facts
Pink coloration commonly comes from potassium feldspar, while dark grains are mafic silicates; granite commonly develops rounded “corestones” through spheroidal weathering.
Field identification & locations
Identify it by visible interlocking grains, abundant light feldspar/quartz, and scattered dark minerals; common in continental mountain belts and exposed plutons worldwide. A thin section or hardness/streak tests would confirm it over weathered gneiss or granodiorite.
