General Information:
Chemical Formula:
Cu2AsO4(OH)
Composition:
(Molecular Weight = 283.02 gm)
Copper 44.91 % Cu
Arsenic 26.47 % As
Hydrogen 0.36 % H
Oxygen 28.27 % O
Empirical Formula:
Cu2(AsO4)(OH)
Name Origin:
From the German olivernerz, literally "olive" ore, in allusion to its typical color.
Physical Properties:
Cleavage:
[110] Indistinct, [010] Indistinct, [110] Indistinct
Color:
olive green, yellowish brown, dirty white, blackish green, or liver brown.
Density:
4.1 - 4.4, Average = 4.25
Diaphaniety:
Subtransparent to translucent to opaque
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Reniform - "Kidney like" i n shape (e.g.. hematite).
Hardness:
3 - Calcite
Luminescence:
None.
Luster:
Vitreous - Greasy
Streak:
yellowish green
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