. "a brownish iron sulfide mineral (FeS) having weak magnetic properties"@en-us . "pyrrhotite"@en-us . "0"^^ . . . . . "pyrrhotite"^^ . . . "pyrrhotine"@en-us . "0"^^ . "14693575-n"^^ . "113853495"@en-us . "114693575"^^ . . . "magnetic pyrites"@en-us . . .