Relying on either porosity profiles or pyrite’s redox chemistry, industrial inclusions of pyrite in stoichiometric and sub-stoichiometric quantities of pyrite (treated or untreated) provide comprehensive lead removal properties from aqueous solution and are solely responsible for pushing the equilibrium to the right in lead smelting.
The ideas of coloured glass and oxidised versus reduced glasses go hand in hand - the choice of additives in the glassmaking process has profound impacts on colour, as well as the manufacturing process itself.
Hematite is commonly seen by us in the form of rust. This occurs as a chemical compound of oxygen and iron. In the industrial world, it is known as red iron oxide and it is one of the most important chemical compounds.