igneous
Granite Pebble
Granite
Hardness of 6-7 on the Mohs scale, colors vary widely including grey, pink, and white with dark flecks, phaneritic (coarse-grained) texture, dull to vitreous luster, specific gravity of 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, colors vary widely including grey, pink, and white with dark flecks, phaneritic (coarse-grained) texture, dull to vitreous luster, specific gravity of 2.65-2.75.
Formation & geological history
Formed from the slow cooling of silica-rich magma deep beneath the Earth's crust over millions of years.
Uses & applications
Used in construction, architectural building stone, countertops, monuments, and landscaping.
Geological facts
Granite is the most common intrusive igneous rock in the Earth's continental crust and is exceptionally durable.
Field identification & locations
Easily identified by its speckled appearance showing interlocking crystals of quartz, feldspar, and micas.
