Hydrated normal arsenate, vivianite group, paramorph of symplesite, forms a series with köttigite
Specific gravity: 3.01
Colour: Light green to leek green, may be greenish black, also deep blue
Solubility: Soluble in acids (Dana)
Parasymplesite is a rare secondary arsenate in the oxidised zone of some
arsenic-rich hydrothermal base-metal mineral deposits
associated with goethite,
erythrite and annabergite
Near Schneeberg, Saxony, Germany, parasymplesite occurs with roselite (Dana).
At the type locality, the Kiura mine, Saiki City, Oita, Japan, parasymplesite occurs in oxidised polymetallic veins (Mindat).
At Baia Sprie, Romania, parasymplesite occurs with quartz in cavities in chert (Dana).
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