General Information:
Chemical Formula:Pb6Cu4AlSb+++++O2(SO4)2Cl4(OH)16
Composition:(Molecular Weight = 2,284.17 gm)Aluminum 1.18 %
AlCopper 11.13 %
CuAntimony 5.33 %
SbHydrogen 0.71 %
H Lead 54.43 %
PbSulfur 2.81 %
S Chlorine 6.21 %
ClOxygen 18.21 %
O Empirical Formula: Pb6Cu4AlSbO2(SO4)2(Cl)4(OH)16
Environment:Secondary lead mineral.
IMA Status:Approved IMA 1985
Locality:Mammoth vein, Tiger, Arizona, USA and from Laurium, Attika, Greece.
Name Origin:Named for the locality.
Physical Properties: Cleavage:[010] Distinct
Color:bright blue, greenish blue, or pale blue.
Density:5.25
Habits:Microscopic Crystals - Crystals visible only with microscopes., Tabular - Form dimensions are thin in one direction., Acicular - Occurs as needle-like crystals.
Hardness:3 - Calcite
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:pale blue
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