Zincite is the mineral form of zinc oxide (ZnO). In nature its crystal form is rare, with the exception of Franklin, New Jersey, an area also known for its fluorescent minerals. It has a hexagonal crystal structure and color that depends on impurities. The zincite found in Franklin, New Jersey is red-colored (mostly due to iron and manganese) and associated with willemite and franklinite. Zincite crystals can be grown artificially and synthetic zincite crystals are available as a by-product of z… (More on Zincite)