Igneous
Granite
Granite
Hardness: 6-7 (Mohs), Color: speckled mostly pale grey and dark grey/black, Luster: dull to vitreous, Crystal structure: phaneritic, Cleavage: varies by mineral
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Physical properties
Hardness: 6-7 (Mohs), Color: speckled mostly pale grey and dark grey/black, Luster: dull to vitreous, Crystal structure: phaneritic, Cleavage: varies by mineral
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface.
Uses & applications
Commonly used in construction, countertops, monuments, and as crushed stone.
Geological facts
Granite makes up a significant portion of the Earth's continental crust.
Field identification & locations
Identify by its coarse-grained texture and speckled salt-and-pepper appearance. Commonly found worldwide. A staple in rock collections.
