igneous
Pink Granite
Phaneritic intrusive igneous rock (high Potassium-Feldspar)
Hardness: 6-7 (Mohs scale), Color: Pink or reddish-pink with gray and black specks, Luster: Vitreous to dull, Crystal Structure: Coarse-grained (phaneritic), Cleavage: Perfect on feldspar grains, Specific Gravity: 2.63-2.75
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Physical properties
Hardness: 6-7 (Mohs scale), Color: Pink or reddish-pink with gray and black specks, Luster: Vitreous to dull, Crystal Structure: Coarse-grained (phaneritic), Cleavage: Perfect on feldspar grains, Specific Gravity: 2.63-2.75
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface. The pink color is due to a high concentration of potassium feldspar (orthoclase). Granite forms in continental crust during orogenic (mountain-building) events.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and monuments. It is also used as crushed stone for road base and aggregate.
Geological facts
Granite is one of the hardest and most durable natural stones. The pink variety gets its hue from the oxidation of iron within the potassium feldspar minerals. It makes up a large portion of the Earth's continental crust.
Field identification & locations
Identify by its interlocking coarse grains and distinct pink to salmon color. It should contain visible quartz (resembling translucent glass) and dark minerals like biotite or hornblende. Commonly found in mountainous regions or shield areas.
