General Information:
Chemical Formula:Ni3(AsO4)2·8(H2O)
Composition:(Molecular Weight = 598.03 gm)Nickel 29.44 %
NiArsenic 25.06 %
AsHydrogen 2.70 %
H Oxygen 42.81 %
O Empirical Formula: Ni3(AsO4)2·8(H2O)
Locality:Annaberg, Germany.
Name Origin:Named after its locality.
Physical Properties: Cleavage:[010] Perfect
Color:apple green, greenish white, gray, yellow green, or white.
Density:3 - 3.1, Average = 3.05
Diaphaniety:Transparent to Subtransparent to translucent
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Encrustations - Forms crust-like aggregates on matrix., Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:2 - Gypsum
Luminescence:None.
Luster:Pearly
Streak:light green
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