Tellurite

minerals

emmonsite

tellurium

Formula: TeO2
Simple oxide of tellurium, paramorph of paratellurite
Specific gravity: 5.88 to 5.92
Hardness: 2
Streak: White
Colour: White to yellow, bright yellow to orange-yellow; nearly colourless in transmitted light
Environments

Hydrothermal environments

Tellurite is a secondary mineral resulting from the oxidation of tellurium and tellurides in the oxide zone of some hydrothermal mineral deposits. Associated minerals include tellurium, tetradymite, nagyágite and many secondary tellurates (HOM, Webmin).

Localities

The type locality is Faţa Băii, Zlatna, Alba, Romania.

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