igneous
Granite Pebble
Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, mottled gray or white color, granular phaneritic texture, and vitreous to dull luster.
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Physical properties
Hardness of 6-7 on the Mohs scale, mottled gray or white color, granular phaneritic texture, and vitreous to dull luster.
Formation & geological history
Formed from the slow cooling of silica-rich magma beneath the Earth's surface over millions of years.
Uses & applications
Used in construction, architectural facades, monument making, and as decorative landscape gravel.
Geological facts
Granite is the most common intrusive rock on Earth and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by visible interlocking mineral crystals; commonly found in riverbeds, glacial tills, and beaches worldwide due to weathering.
