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.

Apr 11, 2023 · 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.

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.

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 …

Apr 2, 2025 · 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.

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

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

May 21, 2024 · 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.