Devilline

Info: Devilline is a complex mineral, that often forms nail-shaped agregates. The colour of this mineral varies from emerald blue to blue-green. Devilline is a rare mineral, which forms often in varios copper deposits and mines. There he is often seen with azurite, malachite and gypsum.

How to recognize: Devilline cannot be dissolved into water, but it's easly dissolved into acids. When heated, the deviline dissolves, leaving white smoke.

Found: Devilline was found in Slovakia, Cornwall (GB) and on Corsica (France).

Crystal structure
Monoclinic
Hardness
2,5
Colour
From emerald green to blue
Luster
Vitreous, pearly