tanteuxenite

tanteuxenite

[tan′tyük·sə‚nīt]
(mineralogy)
(Y,Ce,Ca)(Ta,Nb,O)2(O,OH)6 A brown or black variety of euxenite with tantalum substituting for niobium. Also known as delorenzite; eschwegeite.
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References in periodicals archive ?
The Cooglegong area, possibly the Trigg Hill pegmatites, is the type locality for formanite and tanteuxenite and is also known for its yttrotantalite, fergusonite and gadolinite.