Granite
rock · common
Quick facts
- Hardness
- 6–7
- Luster
- Dull to vitreous (crystals)
- Colors
- Speckled white, pink, gray, black
Coarse-grained intrusive igneous rock of quartz, feldspar, and mica or amphibole.
Not a mineral. Identification should name the rock and its visible minerals, not a single crystal species.
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