tyuyamunite


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Related to tyuyamunite: carnotite

tyuyamunite

[‚tyü·ə′mü‚nīt]
(mineralogy)
Ca(UO2)2(VO4)2·5-8H2O A yellow orthorhombic mineral occurring in incrustations as a secondary mineral; an ore of uranium. Also known as calciocarnotite.
References in periodicals archive ?
The color varies from snow-white to cream-white, however, most examples appear yellowish due to varying concentrations of tyuyamunite as an impregnation.
Similar to the alteration of torbernite to metatorbernite, specimens of bright yellow tyuyamunite may change over time, loosing some molecular water and becoming a dull yellow-brown metatyuyamunite.
The mineral is not particularly common, but occurs, in general, on most specimens of kazakhstanite, fervanite and tyuyamunite.
Pulverulent bright yellow clots of tyuyamunite to 5 cm impregnating dehydrated kingite occur in heavily brecciated jasperoid rock exposed on the 5,400 bench at location 1.