arsenopyrite Meaning, Definition & Usage

  1. noun a silver-white or grey ore of arsenic
    mispickel.

WordNet

Ar`sen*o*pyr"ite noun
Etymology
Arsenic + pyrite.
Definitions
  1. (Min.) A mineral of a tin-white color and metallic luster, containing arsenic, sulphur, and iron; -- also called arsenical pyrites and mispickel.

Webster 1913