arsenopyrite

[ ahr-suh-noh-pahy-rahyt, ahr-sen-uh- ]

noun

1. a common mineral, iron arsenic sulfide, FeAsS, occurring in silver-white to steel-gray crystals or masses: an ore of arsenic.

arsenopyrite

/ ˌɑːsɪnəʊˈpaɪraɪt; ɑːˌsɛnə- /

noun

1. a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS Also calledmispickel

Word History and Origins

Origin of arsenopyrite¹

First recorded in 1880–85; arseno- + pyrite