Furutobeite

Furutobeite


Composition:

(Cu,Ag)6PbS4

Crystal System : Monoclinic
Colours: Grey, black
Lustre : Metallic
Hardness (H) : 3
Specific Gravity (S.G) : 6.74

 

Distribution

Extremely rare.

Occurrence

  • Hypogene

Paragenetic and General Notes

Very rare, as needle-like crystals on chalcocite or tennantite. Readily confused with betekhtinite or stromeyerite, or even acicular chalcocite.