Description

Geoscience Ores of Common Metals Set with 15 specimens of 1-1/2 in approximately contains the most commonly used ores of aluminum, copper, iron, lead, manganese, nickel, zinc, magnesium, beryllium and molybdenum. The term "ore" is used in connection with a rock or mineral mass when it contains enough of an element or compound to make it economically feasible to mine.