Minerals
TopGeneral Information
Mimetite is a chlorine containing lead arsenate that has a clear hexagonal crystal structure. The name is derived from the Greek word 'mimethes', which means imitator. That is because mimetite looks a lot like the mineral pyromorphite.[1]
TopChemical & Physical Information
| Trivial Name | Mimetite |
| Chemical Name | Chlorine Lead Arsenaat |
| Chemical Formula | Pb5(AsO4)3Cl |
| Density | 7,17 g·cm-3 |
| Molar mass | ? |
| Hardness | 3,5-4 |
| Crytal system | Hexagonal |
| Unit cell | ? |
| Crystal habit | ? |
| Fracture | Conchoidal (brittle) |
| Cleavage | Imperfect [1011] |
| Colour | White, yellow, orange, brown or red. |
| Luster | Diamond to resin |
| Streak | White |
| Opacity | Subtransparent to translucent. |
| Safety | Safe |
| Extra | Looks like pyromorphite. |
Photos
(5 cm)
Sources
[1] Wikipedia
[2] Specimen from my personal collection, photo taken by me.
