This chapter contains sections titled: Mn Facts about Manganese Discovery "Braunstein" for Coloring – and Discoloring – of the Glass Melt. Transforms Copper to Silver! Braunstein, Pyrolusite, What Is It in Reality? Early Attempts to Find the Metal in Pyrolusite The Pyrolusite Chemistry Clears Up Finally an Accepted Metal in Pyrolusite A Name for the New Metal Manganese in Iron Ores Manganese Deposits in Our Time Manganese Minerals Manganese Ores Mine Production of Manganese Manganese Nodules in the Ocean Manufacture of Some Manganese Products Ferromanganese Manganese Metal Manganese Dioxide Uses of Manganese and Manganese Products Manganese in Steel Manganese in Aluminum and Copper Alloys Battery Applications Other Uses of Manganese Chemicals Manganese in Life A Toxic Element … … but Essential for Life