igneous
Granite
Intrusive Igneous Rock
Hardness: 6-7 on the Mohs scale. Color: Varies widely (pink, white, grey, black) depending on mineral composition. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible crystals). Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on the Mohs scale
- Luster
- Dull to vitreous
Identified More igneous →
Explore Granite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on the Mohs scale. Color: Varies widely (pink, white, grey, black) depending on mineral composition. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible crystals). Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow crystallization of magma below the Earth's surface over millions of years. Common in continental crust.
Uses & applications
Widely used in construction, countertops, monuments, paving stones, and architectural facing.
Geological facts
Granite is the most common rock type in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its speckled appearance with visible interlocking crystals of quartz, feldspar, and micas. Found globally in major mountain ranges and shield areas.
