Proustite
Proustite is a mineral with the chemical formula Ag3AsS3. It has a Mohs hardness of 2.5 - 3 and adamantine to resinous luster.
Proustite properties
| Type | Mineral |
|---|---|
| Chemical formula | Ag3AsS3 |
| Mohs hardness | 2.5 - 3 |
| Luster | Adamantine to resinous |
| Typical colors | Red to dark red, metallic sheen |
| Formation | Forms in hydrothermal veins, often associated with silver and arsenic mineralization |
| Rarity | 7 / 10 |
Mohs hardness 2.5–3 — soft
1 · Talc5 · Apatite10 · Diamond
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