Lead - WikipediaLead is a chemical element that is assigned the symbol Pb (from the Latin plumbum) and the . Galena, a principal ore of lead, often bears silver, interest in which helped initiate widespread extraction and use of lead in ancient Rome. Lead.ores of lead,Ore - WikipediaLead ore – galena and anglesite (size: 4.8 × 4.0 × 3.0 cm). Gold ore (size: 7.5 × 6.1 × 4.1 cm). Cart for carrying ore from a mine on display at the Historic Archive and Museum of Mining in Pachuca, Mexico. An ore is a type of rock that contains sufficient minerals with important elements including.