Magnetite is one of the very few minerals that is ferrimagnetic; it is attracted by a magnet as shown here Unit cell of magnetite. The gray spheres are oxygen, green are divalent iron, blue are trivalent iron. Also shown are an iron atom in an octahedral space (light blue) and another in a tetrahedral space (gray). Magnetite is a mineral and one of the main iron ores, with the …

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 with the highest iron content (72.4%).

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, 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.

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).

What Is Magnetite? 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 …

Detailed description, properties, and locality information guide about the magnetic mineral magnetite.

2023年4月11日 · 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 crystals with a black color, although some may take on a …

2025年2月15日 · 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.