yttrocrasite

noun

yt·​tro·​cra·​site

plural -s

: a mineral approximately (Y,Th,U,Ca)₂(Ti,Fe,W)₄O₁₁ or (Y,Th,U,Ca)(Ti,Fe,W)₂O₅(OH) consisting of an oxide or basic oxide of the yttrium metals, thorium, uranium, titanium, iron, and tungsten and occurring in pitchy-black orthorhombic crystals (hardness 5.5–6, specific gravity 4.8)

Word History

Etymology

yttrium + -o- + cras- (from Greek krasis mixing, combination) + -ite

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