Galena, E.G. is a mineral composed of lead sulfide and is the primary ORE of lead. It is found in many parts of the world and has been used since ancient times. The crossword solutions for the term Galena, E.G. are ORE (3 letters) and LEADORE (7 letters). ORE is a general term for a rock or mineral that contains valuable metals or minerals that can be mined and extracted for economic gain. LEADORE is a specific type of ORE that contains lead, which is the primary component of Galena, E.G.