Diorite
rock · uncommon
Quick facts
- Formula
- —
- Hardness
- 6-7
- Luster
- Dull to vitreous
- Colors
- Typically gray to dark gray
Diorite is an intrusive igneous rock composed mainly of plagioclase feldspar and one or more dark minerals, such as hornblende.
Look for a coarse-grained texture with a mix of light and dark minerals, often more dark than in granite.
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