Devilline


Composition: CaCu2+4(SO4)2(OH)6.3H2O
Crystal System : Monoclinic
Colours: White-blue, blue-green, green
Lustre : Vitreous, pearly
Hardness (H) : 2.5
Specific Gravity (S.G) : 3.13
References: Gebhard (1999)

Distribution

Very rare.

Occurrence

  • Supergene

Paragenetic and General Notes

White to bluish-white felted masses on tennantite (Pinch and Wilson, 1977) and with serpierite on tennantite pseudomporphs after enargite (Gebhard, 1999). As sky-blue crusts on smithsonite (Pinch and Wilson, op.cit.).