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Formula: ZnFe3+2(AsO4)2(OH)2.4H2O
Hydrated arsenate,
arthurite group
Crystal System: Monoclinic
Specific gravity: 3.39 measured, 3.39 calculated
Hardness: 3
Streak: Pale yellow
Colour: Pale yellowish, pale greenish
Solubility: Readily soluble in dilute acids
Environments
Ojuelaite is a rare mineral in the oxidised zone of
arsenic-rich polymetallic hydrothermal ore deposits
(HOM).
Localities
At the type locality, the Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico, ojuelaite is
associated with scorodite,
paradamite,
smithsonite and limonite
in the zone of oxidation
(AM 67.621-624, HOM).
Ojuelaite from the Ojuela Mine -
Image
At the Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia, ojuelaite is associated with
smithsonite,
tennantite and goethite
(HOM).
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