General Information:
Chemical Formula:NiAs2
Composition:(Molecular Weight = 208.53 gm)Nickel 28.14 %
NiArsenic 71.86 %
As Empirical Formula: NiAs2
Name Origin:From the Greek, para -"similar" and the mineral Rammelsbergite named after the German chemist and mineralogist, K. F. Rammelsberg (1813-1899).
Physical Properties: Cleavage:[001] Perfect
Color:silver white or tarnished white.
Density:7.2
Diaphaniety:Opaque
Habits:Massive - Granular - Common texture observed in granite and other igneous rock., Platy - Sheet forms (e.g. micas)., Arborescent - "Tree like" growths of branched systems (e.g. silver) .
Hardness:5.5 - Knife Blade
Luster:Metallic
Streak:grayish black
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