Nickelblödite
| Nickelblödite | |
|---|---|
| General | |
| Category | Sulfate mineral |
|
Formula (repeating unit) |
Na2Ni(SO4)2•4H2O |
| Strunz classification | 7.CC.50 |
| Dana classification | 29.3.3.2 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/a |
| Unit cell | a = 10.87, b = 8.07 c = 5.46 [Å]; β = 100.43°; Z = 2 |
| Identification | |
| Color | Pale yellowish-green to pale green |
| Crystal habit | flat crystallites |
| Diaphaneity | Translucent |
| Density | 2.43 (calculated) |
| Optical properties | Biaxal (-) |
| Refractive index | nα=1.50-1.51, nβ=1.51-1.52, nγ=1.51-1.52 (approximated) |
| Common impurities | Mg, Fe |
| References | |
Nickelblödite is a rare nickel mineral with the formula Na2Ni(SO4)2•4H2O. Nickelblödite was discovered in nickel mines in Carr Boyd Rocks and Kambalda, Western Australia. The mineral is a nickel-analogue of blödite, changoite, cobaltoblödite and manganoblödite - other representatives of the blödite group.
Nickelblödite contains small admixtures of magnesium and iron.
Minerals associating with nickelblödite include violarite, morenosite, halite, pyrite, and siderite.
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