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Formula: Pb(Te4+O3)
Tellurite, paramorph of
matthiasweilite
Crystal System: Monoclinic
Specific gravity: 7.2 measured, 7.16 calculated
Streak: Yellow-grey
Colour: Grey, brown to yellow-brown
Environments
Localities
At the type locality, the Zhana-Tyube deposit, Stepnyak group, Stepnogorsk, Akmola Region, Kazakhstan,
plumbotellurite occurs as a secondary mineral, formed by
alteration of altaite near the base of the oxidation zone of the
tellurium-rich mineral deposit. It occurs in association with
altaite as replacement rims and
pseudomorphs
(HOM, AM 67.1075).
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