General Information:
Chemical Formula:
PbCu(SO4)(OH)2
Composition:
(Molecular Weight = 400.82 gm)
Copper 15.85 % Cu
Hydrogen 0.50 % H
Lead 51.69 % Pb
Sulfur 8.00 % S
Oxygen 23.95 % O
Empirical Formula:
PbCu(SO4)(OH)2
Environment:
Secondary, weathered zone of ore deposits.
Locality:
Linares, Spain. Mammoth Mine, Arizona.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[100] Perfect, [001] Distinct
Color:
sky blue or deep blue.
Density:
5.3 - 5.5, Average = 5.4
Diaphaniety:
Transparent to Translucent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Platy - Sheet forms (e.g. micas)., Encrustations - Forms crust-like aggregates on matrix.
Hardness:
2.5 - Finger Nail
Luminescence:
None.
Luster:
Vitreous (Glassy)
Streak:
light blue
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