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polybasite Definition

poly·ba·site (päl′i bā′sīt′, pə lib′ə sīt′)

noun

a dark-colored mineral, silver copper antimony sulfide, (Ag,Cu)SbS, that is an ore of silver

Etymology: Ger polybasit < Gr poly- (see poly-) + basis (see base) + Ger -it, -ite