igneous
Weathered granite or granitic rock
Granite; predominantly quartz, feldspar, and mica
AI-generated identification · may be incorrectPinkish-tan, coarse-grained, granular texture with dull to weakly sparkling luster; likely Mohs hardness 6–7, with no obvious cleavage as a whole rock. The color suggests potassium feldspar, while darker grains may be biotite or amphibole.
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Physical properties
Pinkish-tan, coarse-grained, granular texture with dull to weakly sparkling luster; likely Mohs hardness 6–7, with no obvious cleavage as a whole rock. The color suggests potassium feldspar, while darker grains may be biotite or amphibole.
Formation & geological history
An intrusive igneous rock formed by slow cooling of silica-rich magma deep in the crust, commonly during Precambrian or younger continental geological events. Surface weathering has rounded and roughened the specimen.
Uses & applications
Used extensively as building stone, countertops, monuments, paving, and aggregate; small pieces are common teaching and collecting specimens. This ordinary fragment has little gem or commercial collector value.
Geological facts
Granite’s interlocking crystals generally indicate slow underground cooling. Pink coloration commonly comes from potassium feldspar, though the image resolution prevents precise mineral identification.
Field identification & locations
Identify it by visible interlocking grains, pink or gray feldspar, translucent quartz, and scattered dark mica; a glassy streak or strong fizz would suggest alternatives. Common worldwide, especially in continental shield and mountain regions.
