Djerfisherite

General Information:
 Chemical Formula:
K6Na(Fe,Cu)24S26Cl
 IMA Status:
Approved IMA 1967
Physical Properties:
 Color:
bronze brown, greenish brown, or olive green.
 Diaphaniety:
Opaque
 Hardness:
3.5 - Copper Penny
 Luster:
Sub Metallic
More details...