General Information:
Chemical Formula:
Cu5(AsO3OH)2(AsO4)2·10(H2O)
Composition:
(Molecular Weight = 1,028.55 gm)
Copper 30.89 % Cu
Arsenic 29.14 % As
Hydrogen 1.86 % H
Oxygen 38.11 % O
Empirical Formula:
Cu5(AsO3OH)2(AsO4)2·8.5(H2O)
Environment:
Secondary oxidation zone mineral.
Locality:
Eliaas mine, Jachymov, Bohemia, Czech Republic.
Name Origin:
Named for Joseph Lindacker, Austrain chemist, who made the analysis.
Physical Properties:
Cleavage:
[010] Perfect
Color:
greenish blue or light apple green.
Density:
3.35
Diaphaniety:
Transparent
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape., Rosette - Bundled tabular aggregates re sembling rose flower petals.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luster:
Vitreous (Glassy)
Streak:
pale greenish white
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