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 one of the most widespread iron oxide minerals and occurs in a variety of geologic environments. It is a common accessory mineral in igneous rocks, but seldom forms crystals large enough to be seen in hand samples.

Identification of Magnetite. Magnetite is very easy to identify. It is one of just a few minerals that are attracted to a common magnet. It is a black, opaque, submetallic to metallic mineral with a Mohs hardness between 5 and 6.5. It is often found in the form of isometric crystals.

2025年2月19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. The magnetite series also contains magnesioferrite ...

Din latină provine cuvântul magnes - magnet care este folosit în Evul Mediu pentru denumirea mineralului, termenul de magnetit este folosit pentru prima oară în 1845 de geologul și mineralogul austriac Wilhelm Ritter von Haidinger (1795-1871). In China proprietățile magnetice ale mineralului sunt cunoscute deja în secolul XI î.e.n..

2025年2月15日 · Magnetite (Fe 3 O 4) is a ferrimagnetic mineral, which presents in its crystalline structure iron in two oxidation states, Fe 2+ and Fe 3+.Thus, it is an iron oxide mixed with FeO and Fe 2 O 3 with an inverted cubic spinel structure [1], [2], [3], [4].Magnetite has particular magnetic properties and appears in opaque crystals of black color and brightness varying from metallic to submetallic [5].

Jacobsite-Magnetite Series. Magnesioferrite-Magnetite Series. Magnetite is an important iron ore, along with hematite. It is usually easily distinguished by being strongly magnetic, with black octahedral crystals.

2023年9月8日 · Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II,III) oxide, Fe2+Fe3+2O4 .It also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the World. Small grains of magnetite occur in almost all igneous and metamorphic rocks.. Magnetite, Balmat, Balmat-Edwards Zinc District, St ...

33 Magnetite: Properties, Synthesis, & Application Lee Blaney SYNOPSIS The subsequent report presents scientific data concerning properties of micro- (diameter in 10-6 m meter range) and nano- (diameter in 10-9 m meter range) magnetite, an iron oxide with chemical structure Fe3O4, particles; additionally, the properties of nano-particulate magnetite are

In the U.S., large Magnetite masses, sometimes with partial or full octahedral faces, have come from Franklin and Ogdensburg, Sussex Co., New Jersey; and perfect octahedral crystals from Chester, Windsor Co., Vermont. Lustrous cubic crystals were found in Balmat, St. Lawrence Co., New York, producing a unique habit of Magnetite unlike any other.