Black Iron Oxide (Fe3O4)

Black Iron Oxide is a crystalline form of iron oxide that differs from Red, Yellow, and Brown variety of iron oxides. Its crystals are very easily fractured into thin flakes & looks like mica. This similarity gives rise to the term MICACEOUS and it is normally dark grey to black in colour. All MIO ores are generally occurred in Lamellar formation, along with Non Lamellar Hematite cavities.