Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe 2+ Fe 3+ 2 O 4. It is one of the oxides of iron, and is ferrimagnetic; [6] it is attracted to a magnet and can be magnetized to become a permanent magnet itself.

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: A typical magnetite specimen exhibiting a gray metallic luster. This specimen is approximately 10 centimeters across. 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.

2023年9月8日 · 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.

2024年12月2日 · 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.

2023年4月11日 · Get a closer look at the wonders of magnetite, a mineral that has captured the imagination of geologists and collectors alike. Learn about its properties and behavior, and find out how it has shaped our understanding of the earth and its processes.

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).

Magnetite is a mineral with magnetic properties. It’s an iron oxide, and its chemical composition is Fe3O4. It has a black or dark brownish-red hue and often occurs in crystalline form as well as massive granular aggregates of small crystals.

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 presents black color, metallic luster, high hardness, black line, and particular magnetic properties.

2024年5月21日 · Magnetite is a type of iron oxide with natural magnetic properties. In fact, it is the most magnetic naturally occurring mineral on Earth and was once used in compasses. Its chemical name is ferrous-ferric oxide, and its chemical formula is Fe 3 O 4.