Tellurite

This article is about the Tellurium compounds. For the similarly named Star Trek race, see Tellarite.

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Tellurite can refer to the mineral composed of tellurium dioxide (TeO₂), or to the tellurite ion (TeO₃^2-). Potassium tellurite (K₂TeO₃)is used together with agar as part of a selective medium for growth of some bacteria (Clauberg medium). It looks very fragile and is flaky in its natural state.