Source: Found naturally in minerals and rocks, it is used in alloys with iron and steel for industrial applications. It is used in pigments and dry cell batteries.

Summary: Manganese is element 25 on the periodic table. The metal was discovered in 1774 and has a density of 7.43 g/mL at 20 C. It is found in minerals and rocks naturally. Manganese is alloyed with iron and steel to create strong industrial materials. It is also important in removing oxygen and sulfur from steel compounds. Another important compound is manganese dioxide (found naturally) that works to remove hydrogen in dry cell batteries. Manganese has been used widely in pigments.