General Information:
 Chemical Formula:
(Cu,Zn)2(OH)3Cl
 Composition:
(Molecular Weight = 214.49 gm)
Zinc 15.24 % Zn
Copper 44.44 % Cu
Hydrogen 1.41 % H 
Chlorine 16.53 % Cl
Oxygen 22.38 % O 
 Empirical Formula:
Cu1.5Zn0.5(OH)3Cl
Physical Properties:
 Cleavage:
[1011] Good
 Color:
greenish black or dark green.
 Density:
3.74
 Diaphaniety:
Translucent to Subopaque
 Hardness:
3 - Calcite
 Luster:
Vitreous - Dull
 Streak:
light green
More details...

General Information:
 Chemical Formula:
Cu2Cl(OH)3
 Composition:
(Molecular Weight = 213.57 gm)
Copper 59.51 % Cu
Hydrogen 1.42 % H 
Chlorine 16.60 % Cl
Oxygen 22.47 % O 
 Empirical Formula:
Cu2Cl(OH)3
 Environment:
Arid climates with oxidizable copper minerals.
 Locality:
Atacam desert province in northern Chile.
 Name Origin:
Named after its locality.
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
green, yellow, yellow green, or black green.
 Density:
3.76 - 3.78, Average = 3.76
 Diaphaniety:
Transparent to translucent
 Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Fibrous - Crystals made up of fibers., Granular - Generally occurs as anhedral to subhedral crystals in matrix.
 Hardness:
3-3.5 - Calcite-Copper Penny
 Luminescence:
None.
 Luster:
Adamantine
 Streak:
apple green
More details...

The following video provides you with the correct English pronunciation of the word "Paratacamite", to help you become a better English speaker.