Minerals
TopGeneral Information
Pure adamite is colourless, but can gain colour by the pressence of iron (yellow) or copper (green). Adamite was named after the French mineralogist Gilbert Joseph Adam (1795-1881).[1]
TopChemical & Physical Information
| Trivial Name | Adamite |
| Chemical Name | Zinc Arsenate Hydroxide |
| Chemical Formula | Zn2AsO4OH |
| Density | 4,4 g·cm-3 |
| Molar mass | ? |
| Hardness | 3,5 |
| Crytal system | Orthorhombic |
| Unit cell | ? |
| Crystal habit | Radial clusters |
| Fracture | Brittle |
| Cleavage | Good [101], bad [010] |
| Colour | Colourless, yellow to violet |
| Luster | Adamantine |
| Streak | White |
| Opacity | Translucent |
| Safety | Safe |
| Extra | Fluorescent |
Photos
(5 cm)
(2 cm)
Sources
[1] Wikipedia
[2] Specimen from my personal collection, photo taken by me.
