polycrase

noun
poly·​crase | \ -āz\
plural -s

Definition of polycrase

: a mineral (Y,Ca,Ce,U,Th)(Ti,Cb,Ta)2O6 consisting of a columbate and titanate of the metals of the yttrium group that is isomorphous with euxenite (hardness 5–6, specific gravity 5)

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History and Etymology for polycrase

German polykras, from poly- + -kras (from Greek krasis mixing, combination)

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