igneous
Granite Pebble
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale, mottled white, gray, and pink color, vitreous to dull luster, phaneritic crystal structure, specific gravity around 2.65 to 2.75.
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Physical properties
Hardness of 6 on the Mohs scale, mottled white, gray, and pink color, vitreous to dull luster, phaneritic crystal structure, specific gravity around 2.65 to 2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica beneath the Earth's surface over millions of years.
Uses & applications
Commonly used in construction, monument building, countertops, and as decorative landscape or polished stones.
Geological facts
Granite is the most common rock of the Earth's continental crust and is frequently found in mountain ranges.
Field identification & locations
Easily identified in the field by its interlocking visible crystals of quartz, feldspar, and mica. Commonly found in riverbeds and glacial drift.
