Granite
Rock
About it
Coarse, even-grained rock of glassy grey quartz, pink or white feldspar, and black mica or hornblende, every crystal easy to see. The commonest plutonic rock of the continents, quarried worldwide for building stone.
- Type
- Rock (igneous)
- Group
- Igneous (plutonic)
- Specific gravity
- 2.6–2.8
- Colours
- pink, grey, white, red, speckled with black
- Transparency
- opaque
Typical values: real specimens vary. For more, see mindat.org.