Hörnesite
Arsenate mineral
From Wikipedia, the free encyclopedia
Hörnesite is an arsenate mineral bearing magnesium. It is a member of the vivianite group of minerals, and constitutes the magnesium endpoint of a mineral series with nickel or cobalt replacing the magnesium, ending in annabergite or Erythrite.
| Hörnesite | |
|---|---|
| |
| General | |
| Category | Arsenate minerals |
| Formula | Mg3(AsO4)2·8H2O |
| Strunz classification | 8.CE.40 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | C2/m |
| Unit cell | a = 10.262, b = 13.442 c = 4.741 [Å]; β = 104.9°; Z = 2[1] |
| Identification | |
| References | [1] |
