igneous
Granite
Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)
Hardness: 6-7 on Mohs scale; Color: Mottled grey, white, black; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained crystals); Specific Gravity: 2.63-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Mottled grey, white, black
- Luster
- Dull to vitreous
Identified More igneous →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on Mohs scale; Color: Mottled grey, white, black; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained crystals); Specific Gravity: 2.63-2.75
Formation & geological history
Formed via the slow cooling and crystallization of silica-rich magma deep underground in the Earth's crust over millions of years.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, monuments, and as aggregate in infrastructure projects.
Geological facts
Granite makes up a large portion of the Earth's continental crust. It is often found in the cores of mountain ranges and exposed due to long periods of erosion.
Field identification & locations
Identified by its visible interlocking crystals of different colors (salt and pepper appearance). Found globally in batholiths and cratons. Scratch-resistant.
