igneous
Granite
Granite (plutonic intrusive rock)
Phaneritic (coarse-grained) texture, visible interlocked crystals. Hardness: 6-7 Mohs. Color: Pink, white, gray, with dark specs. Luster: Vitreous to dull. Specific gravity: ~2.65-2.75 g/cm³.
- Hardness
- 6-7 Mohs
- Color
- Pink, white, gray, with dark specs
- Luster
- Vitreous to dull
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Physical properties
Phaneritic (coarse-grained) texture, visible interlocked crystals. Hardness: 6-7 Mohs. Color: Pink, white, gray, with dark specs. Luster: Vitreous to dull. Specific gravity: ~2.65-2.75 g/cm³.
Formation & geological history
Formed by the slow crystallization of silica-rich magma deep underground beneath continental crust over millions of years.
Uses & applications
Extensive use in construction, countertops, paving, monuments, dimension stone, and crushed stone aggregate.
Geological facts
Granite forms a large portion of Earth's continental crust. Its high quartz and feldspar content gives it exceptional durability and weather resistance.
Field identification & locations
Identified in the field by its interlocking coarse grains of quartz (glassy), feldspar (blocky, white/pink), and dark mica/amphibole minerals. Found globally in continental mountain belts and ancient shields.
