General Information:
Chemical Formula:FeAsS
Composition:(Molecular Weight = 162.83 gm)Iron 34.30 %
FeArsenic 46.01 %
AsSulfur 19.69 %
S Empirical Formula: Fe3+AsS
IMA Status:Approved IMA 1960
Name Origin:Named after the minerals chemical composition.
Physical Properties: Cleavage:[110] Distinct
Color:tin white or light steel gray.
Density:6.07
Diaphaniety:Opaque
Habits:Striated - Parallel lines on crystal surface or cleavage face., Euhedral Crystals - Occurs as well-formed crystals showing good external form., Prismatic - Crystals Shaped like Slende r Prisms (e.g. tourmaline).
Hardness:5 - Apatite
Luminescence:None.
Luster:Metallic
Streak:black
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