General Information:
Chemical Formula:PbHAsO4
Composition:(Molecular Weight = 347.13 gm)Arsenic 21.58 %
AsHydrogen 0.29 %
H Lead 59.69 %
PbOxygen 18.44 %
O Empirical Formula: PbH(AsO4)
Environment:Secondary mineral in lead arsenice ores. Used as an insecticide as commercially prepared lead arsenate.
Locality:Tsumeb, Namibia.
Name Origin:Named for Baron August Benjamin de Schulten (1856-1912) of Helsingfors and Paris, who prepared and described artificial crystals of the compound.
Physical Properties: Cleavage:[010] Good
Color:colorless, pale yellow, or white.
Density:5.943
Diaphaniety:Transparent
Habits:Tabular - Form dimensions are thin in one direction., Striated - Parallel lines on crystal surface or cleavage face.,
Hardness:2.5 - Finger Nail
Luster:Vitreous - Adamantine
Streak:white
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