igneous
Granite Pebble
Granite
AI-generated identification · may be incorrectHardness 6-7, typically mottled with pink (feldspar), clear/grey (quartz), and black/green (mica/hornblende). Dull to vitreous luster depending on minerals.
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Physical properties
Hardness 6-7, typically mottled with pink (feldspar), clear/grey (quartz), and black/green (mica/hornblende). Dull to vitreous luster depending on minerals.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface. Rounded through natural water tumbling in rivers or along shorelines.
Uses & applications
Common rock type used heavily in construction, dimension stone, and landscaping. As pebbles, often collected for tumbling or decoration.
Geological facts
Granite is the most common intrusive rock in Earth's continental crust.
Field identification & locations
Identify by its interlocking granular texture and presence of quartz, feldspar, and a dark mineral. Very commonly found in riverbeds and beaches worldwide.
