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Formula: Cu6(SO4)(OH)10.2H2O
Hydrated sulphate containing hydroxyl
Crystal System: Orthorhombic
Hardness: 2 to 3
Streak: Pale blue
Colour: Blue
Environments
Volcanic igneous environments
Hydrothermal environments
Localities
At the type locality, Gallery no. 4, Monte Trisa Mines, Mercanti Valley, Torrebelvicino, Vicenza Province, Veneto,
Italy, montetrisaite occurs within old drifts of the mining concession, within a porous altered basic
volcanic rock associated with kaolinite. Other associated minerals
include galena, sphalerite,
chalcopyrite, cerussite,
anglesite, goethite,
langite, posnjakite,
linarite and redgillite.
Montetrisaite appears to be a product of oxidation of sulphide minerals such as
chalcopyrite, pyrite,
sphalerite and galena
(CM 47.143-151).
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