arsenopyrite


ar·se·no·py·rite

noun \ˌär-sə-nō-ˈpī-ˌrīt\

Definition of ARSENOPYRITE

:  a silver-white mineral consisting of a combined sulfide and arsenide of iron that occurs in prismatic orthorhombic crystals or in masses or grains and that is the principal source of arsenic

First Known Use of ARSENOPYRITE

1868

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