Chalcocite
Chalcocite is a mineral with the chemical formula Cu2S. It has a Mohs hardness of 2.5 - 3 and metallic luster.
Chalcocite properties
| Type | Mineral |
|---|---|
| Chemical formula | Cu2S |
| Mohs hardness | 2.5 - 3 |
| Luster | Metallic |
| Typical colors | Steel gray to black |
| Formation | Occurs in hydrothermal veins and as a secondary mineral in copper deposits |
| Rarity | 6 / 10 |
Mohs hardness 2.5–3 — soft
1 · Talc5 · Apatite10 · Diamond
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