Zvěstovite-(Zn)

zvestovite-(Zn)

tennantite-(Zn)

tetrahedrite-(Zn)

argentotennantite-(Zn)

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Formula: Ag₆(Ag₄Zn₂)As₄S₁₃
Sulpharsenite, zvěstovite subgroup, tetrahedrite group
Crystal System: Isometric
Specific gravity: 5.16 calculated
Hardness: About 3½ to 4
Colour: Grey
Environments

Hydrothermal environments

Zvěstovite-(Zn) is a new mineral approved in 2020.

Localities

At the type locality, Zvěstov, Benešov District, Central Bohemian Region, Czech Republic, zvěstovite-(Zn) was found in quartz–baryte gangue at the mine dump of the abandoned small deposit, associated with tennantite-(Zn), tetrahedrite-(Zn), argentotennantite-(Zn), acanthite and supergene azurite and malachite. The zvěstovite-(Zn) occurs as rare relic anhedral grains rimmed by acanthite, up to 100 μm in size (MM 85.5.716-724).

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