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pyrolusite

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noun py·ro·lu·site \ˌpī-rō-ˈlü-ˌsīt\

Definition of pyrolusite

  1. :  a soft black or steel-gray mineral of metallic luster consisting of manganese dioxide that is the most important ore of manganese



Origin of pyrolusite

German Pyrolusit, from Greek pyr- + lousis washing, from louein to wash — more at lye


First Known Use: 1828


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