igneous
Granite (Pink/Potassium-rich)
Pink Granite (contains K-Feldspar, Quartz, and Plagioclase)
Hardness: 6-7 on Mohs scale. Color: Pink to reddish with white and grey grains. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained). Cleavage: Two directions (in feldspars). Specific gravity: 2.6-2.7.
- Hardness
- 6-7 on Mohs scale
- Color
- Pink to reddish with white and grey grains
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Pink to reddish with white and grey grains. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained). Cleavage: Two directions (in feldspars). Specific gravity: 2.6-2.7.
Formation & geological history
Formed through the slow crystallization of magma below Earth's surface (intrusive). Typically formed in continental crust during orogenic (mountain-building) events across various geological eras ranging from the Precambrian to Cenozoic.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, curbing, and monuments due to its durability and aesthetic appeal.
Geological facts
The pink color is caused by an abundance of potassium feldspar (orthoclase). Granite makes up a large portion of the Earth's continental crust and is one of the most recognizable rocks on the planet.
Field identification & locations
Identify in the field by its coarse, interlocking crystalline texture where individual minerals are visible. Look for the distinct pinkish hue indicating high orthoclase content. It is found in mountain ranges and shield areas worldwide.
