Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe2+Fe3+ 2O4.

What is Magnetite? Magnetite is a very common iron oxide (Fe 3 O 4) mineral that is found in igneous, metamorphic, and sedimentary rocks. It is the most commonly mined ore of iron. It is also the mineral …

Magnetite is a black, opaque, magnetic mineral that leaves a black streak when rubbed across a hard rough surface. It is one of the most abundant metal oxides, and its crystal structure contains both the …

Dec 19, 2025 · All are magnetic, although franklinite and jacobsite are only weakly so; magnetite, which frequently has distinct north and south poles, has been known for this property since about 500 bc.

Magnetite is an important iron ore, along with hematite. It is usually easily distinguished by being strongly magnetic, with black octahedral crystals. Nanoinclusions of magnetite crystals cause the …

Apr 26, 2018 · Magnetite is a naturally occurring mineral that is one of the most common iron ores and is widely distributed throughout the world. It is a black, metallic-looking mineral with a distinctive …

Common accessory mineral in igneous and metamorphic rocks. Can be biogenically produced by a wide variety of organisms. Many localities and environments world wide. Link to MinDat.org Location Data.

Feb 15, 2025 · Magnetite consists of a ferrimagnetic mineral formed by ferreous and ferric iron, whose chemical formula is Fe 3 O 4, with some possible content of magnesium and bivalent manganese. It …

5 days ago · Magnetite, a naturally occurring iron oxide, is the most magnetic mineral found in nature. While historically mined as an important iron ore, its influence on modern daily life is often hidden in …

Magnetite is an iron mineral, specifically, it’s an oxidized form of a balanced blend of iron ions. It contains both divalent (Fe²+) ions and trivalent (Fe³+) ions. It’s most commonly seen as octahedral …