igneous
Granite Pebble
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, composed primarily of quartz, feldspar, and mica. Shows a phaneritic (coarse-grained) texture with a vitreous to dull luster. Specific gravity ranges from 2.65 to 2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, composed primarily of quartz, feldspar, and mica. Shows a phaneritic (coarse-grained) texture with a vitreous to dull luster. Specific gravity ranges from 2.65 to 2.75.
Formation & geological history
Formed from the slow crystallization of magma below the Earth's surface over millions of years. This particular specimen has been water-worn into a smooth pebble shape through fluvial processes.
Uses & applications
Commonly used in construction, monument building, countertops, and as crushed stone for landscaping and roadbeds.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable and resistant to weathering.
Field identification & locations
Easily identified by its speckled pink, white, gray, and black crystalline grains. Found worldwide in mountainous regions, shield areas, and riverbeds where glacial or water action has transported them.
