chromite mineral

Chromite - Wikipedia

クロム鉄鉱 - Wikipedia

クロム鉄鉱 (くろむてっこう、chromite、 クロマイト )は、 鉄 、 マグネシウム 、 クロム が主成分の 酸化鉱物 。 モース硬度 5.5、 組成式 は (Fe,Mg)Cr 2 O 4 で、 磁鉄鉱 などと同様に スピネル型結晶構造 を取る スピネルグループ の 鉱物 。

Chromite: The mineral Chromite information and pictures

The Mineral chromite Chromite, the principle ore of the element chromium, is a commercially valuable mineral. However, due to mining restrictions and the fact that Chromite is not commonly found in crystallized form, it is not well-represented in mineral collections.

Home | SICHENG - Chromite Sand

2020/12/14 · Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr2O4). It is dark gray to black in color with a metallic to submetallic luster

Chromite Mineral Data

General Chromite Information Chemical Formula: Fe++Cr2O4 Composition: Molecular Weight = 223.84 gm Chromium 46.46 % Cr 67.90 % Cr 2 O 3 Iron 24.95 % Fe 32.10 % FeO Oxygen 28.59 % O

Chromite: Mineral information, data and localities.

Chromite is the most important chromium ore mineral. It forms a complete solid solution series with many other members of the group, eg. in the Chromite-Hercynite Series , Chromite-Spinel Series , Chromite-Magnetite Series and the Chromite-Magnesiochromite Series .

Chromite: The only mineral ore of chromium metal

Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr 2 O 4). It is dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when chromite-bearing rocks are altered by heat or weathering.

Chromite | Physical - Optical Properties, Uses, Occurrence ...

2019/07/02 · Chromite is an oxide mineral that an iron chromium oxide with formula: FeCr2O4. It is belonging to the spinel group. Chromite is the most important ore of chromium. Crystals are uncommon, but when found they are octahedral.

Department for Energy and Mining - Chromite

Chromite, a brownish black cubic mineral belonging to the spinel group, is the only ore mineral from which metallic chromium and chromium compounds are obtained. It has the chemical formula FeCr 2 O 4, and a theoretical composition of 32.0% FeO and 68.0% Cr 2 O 3.

Chromite | Mineralogy4Kids

The only ore of chromium, chromite is a major constituent in stainless steel. It is one of the first minerals to separate from a cooling magma, and large chromite deposits are thought to have been derived by such magmatic differentiation. Mineral Photos courtesy of R.Weller/Cochise College

Chromite | mineral | Britannica

Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium. It is the principal member …

Chromite – Sibelco

Chromite is a mineral that is an iron chrome oxide. It has a chemical formula of FeCr2O4. The main constituent of Portachrome A is chromite. Chromite is a crystalline off-colour Metal Oxide, characterised by: High melting point. Excellent thermal stability. High density. Medium Mohs hardness of 5.5.

Chromite (Cr2FeO4) | FeCr2O4 - PubChem

Chromium forms a number of compounds in various oxidation states. Those of 2+ (chromous), 3+ (chromic) and 6+ (chromates) are the most important / Chromium, alloys and cmpd/

THE MINERAL CHROMITE - Amethyst Galleries

Chromite is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a wide range of industrial uses. Chromite forms in deep ultra-mafic magmas and is one of the first minerals to crystallize. It is because of this fact that chromite is found in some concentrated ore bodies.

Chromite - Photo Gallery - Mindat.org

Mineral: Associated with: Country: Region: Keyword(s): Order by: H21-1G1 Chromite Fe 2+ Cr 3+ 2 O 4 Pic du Champ-de-Bataille, Mont Dore, Southern Province, New Caledonia, France ...

Chromite mining - The Oregon Encyclopedia

Chromite is a mineral that contains chromium. It is considered a strategic mineral, which generally means that it is necessary for military and industrial use during periods of national emergency.

Chromite vs Chrome - What's the difference? | WikiDiff

2020/10/20 · Noun. ( wikipedia chromite ) (mineral) A dark brown mineral species with the formula FeCr 2 O 4. Any member of the chromite-magnesiochromite series that is a mixed oxide of iron, magnesium and chromium with the formula (Fe,Mg)Cr 2 O 4. It is a commercial source of chromium.

Chromite - Handbook of Mineralogy

Chromite CrystalData: Cubic. Point Group: 4/m 321m. Crystals octahedral, modified by the cube or dodecahedron, to about 1em; commonly finegranular, compact, massive. Twinning: On {Ill}as both twin and composition plane, the spinel law. ...

Chromite - University of Auckland

Chromite, an oxide mineral, is the major oreof chromium. It is often used for the bricks and linings of blast furnaces as it can withstand very high

Chromite | Earth Sciences Museum | University of Waterloo

2013/10/09 · Chromite is the main source of the metal chromium, a metal used to induce hardness, toughness and chemical resistance in steel. It was named after its chemical composition, chromium oxide. The mineral is brownish to black in colour with a dark brown streak. It has a conchoidal or an uneven fracture as well as no distinct cleavage.

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