igneous
Pink Granite
Phaneritic intrusive igneous rock (Granite)
Hardness: 6-7 Mohs; Color: Pink, orange-red, with gray and black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Composition: Quartz, Potassium Feldspar (Orthoclase), and Plagioclase.
- Hardness
- 6-7 Mohs
- Color
- Pink, orange-red, with gray and black specks
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, orange-red, with gray and black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Composition: Quartz, Potassium Feldspar (Orthoclase), and Plagioclase.
Formation & geological history
Formed by the slow cooling of silica-rich magma deep beneath the Earth's surface (plutonic). The pink hue is caused by a high concentration of potassium feldspar.
Uses & applications
Extensively used in construction, countertops, monuments, paving stones, and as crushed aggregate for roads.
Geological facts
Pink granite is the state rock of several regions and is famous for its resistance to weathering. Notable examples include the pink granite of the Llano Uplift in Texas and the Aswan quarries in Egypt.
Field identification & locations
Identify by its interlocking crystalline texture and prominent pink feldspar crystals. It is found in continental crust and mountain ranges globally.
