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Formula: U(UO2)3(AsO4)2(OH)6.4H2O
Hydrated arsenate, uranyl mineral
Crystal system: Orthorhombic
Specific gravity: 4.91 calculated
Hardness: 2
Streak: Yellowish
Colour: Yellow
Luminescence: Not fluorescent under UV
Solubility: Rapidly soluble in dilute hydrochloric acid
RADIOACTIVE
Environments
Plutonic igneous environments
Hydrothermal environments
Arsenovanmeersscheite was approved in 2006 but to date (November 2025) it has been reported only from the
type locality.
Localities
At the type locality, the Krunkelbach Valley Uranium deposit, Menzenschwand, St Blasien, Waldshut, Freiburg
Region, Baden-Württemberg, Germany, arsenovanmeersscheite occurs as a
secondary mineral associated with
vanmeersschelte,
schoepite, pyrite and
quartz. Crusts, on quartz, are
composed of lath-like crystals of arsenovanmeersscheite up to 0.1 mm in size
(Mindat).
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