General Information:
Chemical Formula:PbZn(VO4)(OH)
Composition:(Molecular Weight = 404.54 gm)Vanadium 12.59 %
V Zinc 16.16 %
ZnHydrogen 0.25 %
H Lead 51.22 %
PbOxygen 19.77 %
O Empirical Formula: PbZn(VO4)(OH)
Name Origin:Named after the French mineralogist, Alfred Des Closzeaux (1817-1897).
Physical Properties: Cleavage:None
Color:dark brownish black, dark reddish brown, orange red, reddish brown, or black.
Density:6.1 - 6.2, Average = 6.15
Diaphaniety:Transparent to Opaque
Habits:Plumose - "Mica-like" minerals forming aggregates of plume-like forms., Tabular - Form dimensions are thin in one direction., Encrustations - Forms crust-like aggregates on matrix.
Hardness:3.5 - Copper Penny
Luminescence:None.
Luster:Greasy (Oily)
Streak:light brownish green
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