igneous
Pink granite
Granite, chiefly quartz, potassium feldspar, and plagioclase with minor mica
AI-generated identification · may be incorrectCoarse-grained, pinkish-gray rock with interlocking crystals and a generally massive texture; constituent minerals are about Mohs 6–7, with vitreous quartz and feldspar luster. The pictured specimen appears weathered, and individual crystals are not clearly resolved.
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Physical properties
Coarse-grained, pinkish-gray rock with interlocking crystals and a generally massive texture; constituent minerals are about Mohs 6–7, with vitreous quartz and feldspar luster. The pictured specimen appears weathered, and individual crystals are not clearly resolved.
Formation & geological history
Formed when silica-rich magma cooled slowly underground, allowing large crystals to grow. Granite bodies occur across many geological ages, so the specimen’s age cannot be determined from the image.
Uses & applications
Commonly used as dimension stone, paving, monuments, countertops, and crushed aggregate; this rough boulder has little jewelry value.
Geological facts
Pink color commonly comes from potassium feldspar; granite is a rock, not a single mineral.
Field identification & locations
Look for a speckled mix of visible quartz, feldspar, and dark mica, with no layering and no reaction to weak acid. Common worldwide in continental crust and exposed plutons.
