igneous
Granite
Intrusive Igneous Rock
Hardness: 6 on the Mohs scale. Color: Varies widely from pink to gray, white, and black, depending on its mineral composition. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible mineral crystals). Specific gravity: 2.65 to 2.75.
- Hardness
- 6 on the Mohs scale
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6 on the Mohs scale. Color: Varies widely from pink to gray, white, and black, depending on its mineral composition. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible mineral crystals). Specific gravity: 2.65 to 2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali aluminum silicates deep underground, typically over millions of years.
Uses & applications
Widely used in construction, architectural facades, monuments, floor tiles, and countertops due to its durability.
Geological facts
Granite is the most common rock of Earth's continental crust and is exceptionally resistant to weathering compared to other rock types.
Field identification & locations
Easily identified by its speckled appearance with interlocking crystals of quartz, feldspar, and mica. Found globally in mountainous regions and shield areas.
