igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained, visible crystals). Cleavage: None distinct. Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Luster
- Dull to glassy
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 Mohs scale. Color: Varies widely (pink, white, gray) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained, visible crystals). Cleavage: None distinct. Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali feldspar deep beneath the Earth's surface, typically over millions of years.
Uses & applications
Widely used in construction, monuments, flooring, countertops, and decorative stone due to its durability and aesthetic appeal.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Easily identified by its speckled appearance showing interlocking crystals of quartz, feldspar, and micas. Found globally in continental shields and mountain belts.
