Serpentine
rock · common
Quick facts
- Formula
- (Mg,Fe)3Si2O5(OH)4
- Hardness
- 2.5–5.5
- Luster
- Greasy, waxy, silky
- Colors
- Green, yellow, black, brown
Serpentine is a group of minerals that are often green and have a greasy or waxy luster. They are commonly used as decorative stones.
Look for a greasy feel and green color, often with a massive form.
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