igneous
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
Hardness: 6-7 Mohs; Color: Pink, reddish-orange, grey, and black mottled; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained); Cleavage: Perfect on feldspar grains; Specific gravity: 2.63-2.75
- Hardness
- 6-7 Mohs
- Color
- Pink, reddish-orange, grey, and black mottled
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, reddish-orange, grey, and black mottled; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained); Cleavage: Perfect on feldspar grains; Specific gravity: 2.63-2.75
Formation & geological history
Forms from the slow crystallization of silica-rich magma below Earth's surface. Often formed in continental crustal batholiths during orogenic events spanning millions of years (e.g., Precambrian to Cenozoic).
Uses & applications
Widely used in construction, countertops, monuments, floor tiles, and as crushed stone for road base.
Geological facts
The pink color is primarily caused by Potassium Feldspar (Orthoclase). Granite makes up a large portion of the Earth's continental crust. Examples include the peaks of the Sierra Nevada and the Egyptian pyramids.
Field identification & locations
Identify by its interlocking crystalline texture and the presence of pink feldspar, clear quartz, and dark biotite or hornblende. Commonly found in mountainous regions or shield areas like the Canadian Shield.
