igneous
Pink granite (likely weathered)
Granite; predominantly quartz, potassium feldspar, plagioclase, and mica
AI-generated identification · may be incorrectUsually coarse-grained with interlocking crystals; pink or reddish from potassium feldspar, with gray quartz and dark mica. Mohs hardness about 6–7, vitreous to dull luster, no cleavage as a rock, and specific gravity around 2.6–2.7.
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Physical properties
Usually coarse-grained with interlocking crystals; pink or reddish from potassium feldspar, with gray quartz and dark mica. Mohs hardness about 6–7, vitreous to dull luster, no cleavage as a rock, and specific gravity around 2.6–2.7.
Formation & geological history
Forms when silica-rich magma slowly cools deep underground, producing visible crystals; most granite formed during Precambrian to Phanerozoic continental crust formation. The rounded surface suggests weathering or abrasion.
Uses & applications
Used extensively as dimension stone, countertops, monuments, flooring, aggregate, and building facing; attractive polished pieces are collected but usually have modest value.
Geological facts
Granite’s interlocking crystals make it strong and durable. Pink varieties commonly contain abundant alkali feldspar and may weather to a coarse, sandy surface.
Field identification & locations
Identify it by visible pink feldspar, gray translucent quartz, and scattered black mica; a glassy fracture and crystal-grained texture distinguish it from sandstone or artificial stone. Common worldwide in continental mountain belts and shield regions.
