igneous
Granite
Felsic intrusive igneous rock
Hardness of 6 on the Mohs scale, colors typically range from pink to gray depending on feldspar content, dull to vitreous luster, phaneritic (coarse-grained) crystal structure, poor cleavage for the rock as a whole but good cleavage in individual feldspar and mica crystals, specific gravity around 2.65 to 2.75.
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Physical properties
Hardness of 6 on the Mohs scale, colors typically range from pink to gray depending on feldspar content, dull to vitreous luster, phaneritic (coarse-grained) crystal structure, poor cleavage for the rock as a whole but good cleavage in individual feldspar and mica crystals, specific gravity around 2.65 to 2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali aluminosilicates deep beneath the Earth's surface.
Uses & applications
Widely used in construction, dimension stone for buildings and monuments, countertops, paving, and decorative aggregate.
Geological facts
Granite is the most common rock of the Earth's continental crust and is frequently used as a benchmark for durability in monumental architecture.
Field identification & locations
Easily identified by its visibly crystalline, speckled texture composed of interlocking quartz, feldspar, and mica crystals. Found abundantly in continental shields and mountain ranges worldwide.
