The mineral kind of black iron-oxide, Fe3O4, very often takes place with magnesium, zinc, and manganese and is an important ore of iron.
A magnetic mineral, Fe3O4, among primary ores of iron. It has additionally been known as lodestone.
An oxide of metal (Fe3O4) happening in isometric crystals, in addition massive, of a black shade and metallic luster. Its readily attracted by a magnet and sometimes possesses polarity, being after that known as loadstone. It's an important iron-ore. Called additionally magnetized metal.
Magnetic oxid of metal; a black oxid of iron (Fe3O4 or FeO.Fe2O3) that will be strongly attractable by a magnet.
an oxide of iron this is certainly strongly drawn by magnets