galena
ga.le.na \g*-'le--n*\ n [L, lead ore] : a bluish gray mineral Pbs with metallic luster consisting of lead sulfid e, showing highly perfect cubic cleavage, and constituting the principle ore of lead
Webster's English Dictionaryga.le.na \g*-'le--n*\ n [L, lead ore] : a bluish gray mineral Pbs with metallic luster consisting of lead sulfid e, showing highly perfect cubic cleavage, and constituting the principle ore of lead