Realgar
| Mineral | Realgar | |
| Formula | AsS | |
| Origin | Jiepaiyu Mine (Shimen Mine; Realgar Mine), China | |
| Description | Intensive red coloured sinter of realgar. | |
| Classification (Lapis) | Sulfides | |
| Crystal System | monoclinic | |
| Hardness | 1,5 – 2 | |
| Colour | hellblutrot, orangegelb, dunkelrot | |
| Streak | orange yellow | |
| Luminescence | none observed | |
| Lustre | Diamantglanz, Fettglanz | |
| Transparency (Opacity) | transparent to translucent | |
| Cleavage | (010) and (210), rather perfect | |
| Fracture | ||
| Magnetism | ||
| Geological Setting | In low-temperature hydrothermal veins or impregnations, deposited from hot springs and as sublimation product from volcanic gases, or is formed by weathering of As- and S-containing ore minerals | |
| Specific Gravity | 3,56 g/cm3 |
Okrusch and Frimmel (2020). Mineralogy. An Introduction to Minerals, Rocks, and Mineral Deposits. Springer.
