igneous
Granite Pebble
Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, speckled pink, white, and black coloration, phaneritic crystal structure with visible grains, and dull to vitreous luster.
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Physical properties
Hardness of 6-7 on the Mohs scale, speckled pink, white, and black coloration, phaneritic crystal structure with visible grains, and dull to vitreous luster.
Formation & geological history
Formed from the slow cooling of magma beneath the Earth's surface over millions of years, commonly found in continental crust.
Uses & applications
Widely used in construction, monuments, countertops, and decorative landscaping gravel.
Geological facts
Granite is the most common rock of the continental crust and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its interlocking, visible mineral crystals of quartz, feldspar, and dark biotite mica; found worldwide in glacial drift and riverbeds.
