igneous
Pink Granite
Phaneritic Quartz-Feldspar Plutonic Rock
Mohs Hardness: 6-7; Color: Pink, reddish, or tan with white/grey inclusions; Luster: Dull to vitreous; Structure: Phaneritic (crystalline grains visible); Specific Gravity: 2.63 to 2.75
- Hardness
- 6-7
- Color
- Pink, reddish, or tan with white/grey inclusions
- Luster
- Dull to vitreous
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Physical properties
Mohs Hardness: 6-7; Color: Pink, reddish, or tan with white/grey inclusions; Luster: Dull to vitreous; Structure: Phaneritic (crystalline grains visible); Specific Gravity: 2.63 to 2.75
Formation & geological history
Formed from the slow cooling of silica-rich magma deep underground (plutonic). The pink color is derived from an abundance of potassium feldspar (orthoclase). Found in continental crust plates worldwide.
Uses & applications
Used extensively in construction for countertops, floor tiles, paving stones, and monuments due to its high durability and aesthetic appeal. Small pebbles are used in landscaping.
Geological facts
Granite is the most common rock found on the Earth's continental crust. If the pink feldspar makes up more than 90% of the rock, it is classified specifically as an alkali feldspar granite.
Field identification & locations
Identify in the field by its speckled appearance of interlocking crystals. It is much harder than sedimentary rocks and will not react with acid like limestone or marble. Commonly found in mountainous terrains or glacial deposits.
