igneous
Granite
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, varying colors (pink, white, grey, black) depending on mineral content, sub-to-euhedral crystal structure, dull to vitreous luster, good cleavage in feldspar components, specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, varying colors (pink, white, grey, black) depending on mineral content, sub-to-euhedral crystal structure, dull to vitreous luster, good cleavage in feldspar components, specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali metal oxides beneath the Earth's surface, typically during orogenic events, with geological ages ranging from Precambrian to Cenozoic.
Uses & applications
Widely used in construction for dimension stone, countertops, monuments, flooring, and decorative aggregates.
Geological facts
Granite is the most common intrusive rock of Earth's continental crust and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its visibly crystalline, speckled appearance containing interlocking quartz, feldspar, and mica grains. Found globally in continental shields and intrusive plutons.
