General Information:
Chemical Formula:
Cu5(SiO3)4(OH)2
Composition:
(Molecular Weight = 656.08 gm)
Copper 48.43 % Cu
Silicon 17.12 % Si
Hydrogen 0.31 % H
Oxygen 34.14 % O
Empirical Formula:
Cu5Si4O12(OH)2
Environment:
Secondary mineral after malachite.
IMA Status:
Approved IMA 1961
Locality:
Shattuck mine, Bisbee, Cochise Co., Arizona, USA.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[010] Perfect, [100] Perfect
Color:
blue, dark blue, or green.
Density:
3.8
Diaphaniety:
Transparent to translucent
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., Fibrous - Crystals made up of fibers.,
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
pale blue
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