igneous
Granite Pebble
Phaneritic Igneous Rock
Hardness of 6 on the Mohs scale, composed primarily of quartz, feldspar, and mica. Shows a coarse-grained, speckled white, grey, and black crystalline structure with a dull to vitreous luster.
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Physical properties
Hardness of 6 on the Mohs scale, composed primarily of quartz, feldspar, and mica. Shows a coarse-grained, speckled white, grey, and black crystalline structure with a dull to vitreous luster.
Formation & geological history
Formed from the slow cooling and solidification of magma deep beneath the Earth's continental crust over millions of years, followed by weathering and water transport into a rounded pebble.
Uses & applications
Used in construction, landscaping, countertops, and as a decorative stone.
Geological facts
Granite is the most common igneous rock in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Identified by its interlocking crystal grains and speckled appearance. Commonly found in riverbeds, beaches, and mountainous regions worldwide.
