Zippeite

minerals

uranopilite

uranophane

schrockingerite

Images
Formula: K3(UO2)4(SO4)2O3(OH).3H2O
Hydrated sulphate containing hydroxyl, zippeite group
Specific gravity: 4.794 calculated
Hardness: 2
Streak: White, yellow
Colour: Golden yellow, light yellow, orange-yellow
Solubility: Fairly soluble in acid waters (Dana)
RADIOACTIVE
Environments

Hydrothermal environments

Zippeite is common in underground uranium mines, but uncommon in collections. It occurs in part post-mine, in oxidised uranium deposits containing sulphides. Associated minerals include uranopilite, natrozippeite, nickelzippeite, magnesiozippeite, johannite, uranophane, schröckingerite and gypsum (HOM).

Localities

At the type locality, the Elias Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic, zippeite is associated with uranopilite, uraninite, limonite and gypsum (Mindat).

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