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

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 ferrous (Fe+2) and ferric (Fe+3) forms of iron ions.

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 with the highest iron content (72.4%). Magnetite is very easy to identify. It is one of just a few minerals that are attracted to a common magnet.

Sep 8, 2023 · 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 magnetic property, hence its name.

Sep 18, 2023 · Iron ore is most often found in the forms of hematite and magnetite. Learn how these types of iron ore differ so you can make informed investments.

Dec 2, 2024 · magnetite, iron oxide mineral (FeFe 2 O 4, or Fe 3 O 4) that is the chief member of one of the series of the spinel (q.v.) group. Minerals in this series form black to brownish, metallic, moderately hard octahedrons and masses in igneous and metamorphic rocks and in granite pegmatites, stony meteorites, and high-temperature sulfide veins.

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 iridescence of Rainbow obsidian (Nadin, 2007).

Jun 15, 2020 · Magnetite is in the hexoctahedral crystal class; in the 3-D crystal structure, the purple atoms are iron, and the red atoms are oxygen. Magnetite’s greatest use is as an important iron ore for steel manufacture.

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.

Magnetite contains iron in two oxidation states, ferric (Fe 3+) and ferrous (Fe 2+), which is unique amongst the oxides of iron. Its structure is an inverse spinel, with the oxide ions forming a face centred cubic lattice, with iron taking the space in the interstitial sites.