| Mineral | ANNABERGITE |
| Chemistry | Ni 3 (AsO 4 ) 2 ·8H 2 O |
| Class | Phosphates |
| Uses | A very minor ore of nickel and mineral specimens |
| Color | Pale roselight grey to light apple Green white . |
| Luster | Pearly |
| CrystalSystem | Monoclinic |
| CrystalHabits | include flattened striated blades or radiating accicular crystals, but large crystals are extremely rare.More commonly as crusts or powdery masses. |
| Fracture | perfect in one direction. |
| Hardness | 1½ - 2½ |
| Streak | Paler than its color. |
| Characteristics | Thin flakes are flexible. |
| Occurences | include Cobalt, Ontario; Lavrion, Greece; Humboldt, Nevada, USA; Sierra Cabrera, Spain and Germany. |
| Indicators | color, softness, associations, and flexible crystals. |
| DensityNote | average for translucent minerals |
| IMAStatus | Approved |
| Discovered | 1852 |
| CellParameters | a = 10.05b = 13.3c = 4.71 β=102.1° |
| Ratio | a:b:c = 0.756 : 1 : 0.354 |
| OpticalType | Biaxial (-) |
| RI | n α =1.622 n β =1.658 n γ =1.687 |
| Birefringence | δ=0.065 |
| SurfaceRelief | Moderate |
| TypeLocality | Teichgräber Flacher vein Frohnau Annaberg- Buchholz Erzgebirge Saxony Germany |
| Strunz | 7/C.13-80 7 : PhosphatesArsenatesVanadates C : Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and MnFeCuZnMg 13 : Vivianite group |
