igneous
Rounded granite pebble
Granite; chiefly quartz, feldspar, and mica
AI-generated identification · may be incorrectLight cream, pink, and gray speckling with a granular texture; likely Mohs 6–7, vitreous to dull luster, interlocking crystals, and no preferred cleavage. Exact mineral proportions cannot be determined from the image.
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Physical properties
Light cream, pink, and gray speckling with a granular texture; likely Mohs 6–7, vitreous to dull luster, interlocking crystals, and no preferred cleavage. Exact mineral proportions cannot be determined from the image.
Formation & geological history
Granite forms when silica-rich magma cools slowly underground, allowing visible crystals to grow; its age depends on its source, and the pebble’s rounded shape suggests later weathering and transport.
Uses & applications
Granite is widely used for building stone, countertops, paving, and monuments; this small pebble is mainly suitable for collecting or decoration.
Geological facts
Granite is a coarse-grained intrusive igneous rock, typically dominated by quartz and feldspars.
Field identification & locations
Look for interlocking light and dark mineral grains and a hard, crystalline surface; rounded granite pebbles occur in river, beach, and glacial deposits. A common small pebble typically has little monetary value.
