Vashegyite

vashegyite

variscite

wavellite

evansite

Images

Formula: Al11(PO4)9(OH)6.38H2O
Hydrated phosphate containing hydroxyl
Specific gravity: 1.93 to 1.99
Hardness: 2 to 3
Streak: White
Colour: White, light green, light yellow, light brown, colourless in transmitted light
Solubility: Readily soluble in acids
Environments

Hydrothermal environments

Vashegyite occurs associated with variscite, apatite, wavellite and evansite (HOM, Webmin).

Localities

At Chvaletice, Pardubice District, Pardubice Region, Czech Republic, vashegyite occurs intimately mixed with apatite and iron hydroxides (Dana).

At the type locality, Železník (Vashegy), Sirk, Revúca District, Banská Bystrica Region, Slovakia, vashegyite occurs in boxwork limonite in the oxidised zone of the siderite-ankerite deposit. Associated minerals include wavellite, variscite and evansite (Dana, HOM, Mindat, CM 21.489-498).

Near Manhattan, Manhattan Mining District, Toquima Range, Nye county, Nevada, USA, vashegyite occurs in altered slate with variscite (Dana).

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