Vikingite

vikingite

cosalite

gustavite

heyrovskyite

Images

Formula: Ag₅Pb₈Bi₁₃S₃₀
Valence: Ag¹⁺₅Pb²⁺₈Bi³⁺₁₃S^2-₃₀
Sulphosalt, lillianite homologous series group, silver- and bismuth- bearing mineral
Crystal System: Monoclinic
Specific gravity: 7.19 calculated
Hardness: 3½
Colour: Light grey
Common impurities: Cu
Environments

Pegmatites
Hydrothermal environments

Localities

At La Mothe quarry, La Roche-Ballue, Bouguenais, Nantes, Loire-Atlantique, Pays de la Loire, France, vikingite is associated with gustavite, heyrovskyite and quartz (HOM).
Vikingite from La Mothe Quarry - Image

At the type locality, the Ivigtut mine, Ivittut stock, Arsuk Fjord, Sermersooq, Greenland, vikingite is associated with cosalite and occurs as lamellae in galena in the gustavite-galena paragenesis (HOM).
Vikingite from the Ivigtut Mine - Image

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