Arsenic
Pyrargyrite, Silver, Arsenic
Item-No.: 0300205 Price: 100.00 EUR
Uranium Mine No. 19, Dubenec, Příbram, Central Bohemia Region, Bohemia, Czech Republic
| Synonyms: | Löffelkobalt, Native Arsenic |
| Classification: | Elements, Arsenic group |
| Chemical formula: | As |
| Crystal system: | Trigonal |
| Density (g/cm3): | 5.63 - 5.78 |
| Tenacity: | Brittle |
| Cleavage: | Perfect, perfect basal on {0001}, fair on {0114} |
| Fracture: | Irregular/Uneven |
| Hardness (Mohs): | 3,5 |
| Colour: | Tin-white, tarnishing to dark grey or black |
| Lustre: | Metallic, Dull |
| Streak: | Grey |