jamesonite
Ja"me*son*ite, n. Etym: [From Prof. Jameson, of Edinburgh.] (Min.) Defn: A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.
Ja"me*son*ite, n. Etym: [From Prof. Jameson, of Edinburgh.] (Min.) Defn: A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.