Cuzticite

cuzticite

emmonsite

eztlite

schmitterite

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Formula: Fe³⁺₂Te⁶⁺O₆.3H₂O
Tellurate
Crystal System: Hexagonal
Specific gravity: 3.9 measured, 4.01 calculated
Hardness: 3
Colour: Deep yellow, also golden brown to brown
Solubility: Soluble in cold dilute hydrochloric acid (Dana)
Environments

Hydrothermal environments

Cuzticite is a very rare mineral.

Localities

At the type locality, the Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico, cuzticite is very rare in oxidised ore in a matrix of intensely silicified and brecciated rhyolite vitrophyre (a porphyry with phenocrysts in a glassy groundmass), cemented by drusy quartz and carrying pyrite and tellurides. Associated minerals include eztlite, emmonsite, schmitterite, kuranakhite and pyrite (AM 68.471, HOM). The cuzticite occurs as yellow to brownish yellow scaly coatings (Mindat).

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