General Information:
Chemical Formula:
K2Cu2(SO4)2O
Composition:
(Molecular Weight = 413.42 gm)
Potassium 18.91 % K
Copper 30.74 % Cu
Sulfur 15.51 % S
Oxygen 34.83 % O
Empirical Formula:
K2Cu2(SO4)2O
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Perfect
Color:
dark green, emerald green, black, or black green.
Density:
3.1
Hardness:
2.5 - Finger Nail
Streak:
yellow green
More details...