Orpiment
Videonummer 11938487
| Orpiment (arsenic sulphide) forms soft, heavy, fragile crystals with a greasy lustre. It fuses easily, giving off arsenic fumes with a strong garlic smell that conceal fumes of sulphur dioxide. The mineral is deposited by hot springs but is also found around fumaroles, metamorphic dolomites and in low-temperature hydrothermal veins associated with realgar and native arsenic. Orpiment is used to remove hair in the tanning of hides and as a source of arsenic. In the 19th century it was used by artists as a pigment. This sample is from Arizona, USA. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
| Modell-Rechte: | nicht erforderlich |
| Länge: | 26 Sekunden |
| Seitenverhältnis: | 16:9 |
| Restrictions: | - |
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