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Chromite mineral Britannica

Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr 2 O 4) that is the chief commercial source of chromium. It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite,

Chromite: The only mineral ore of chromium metal

What is Chromite? 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.

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 _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: Fe 2+ Cr 2 O 4: Environment: Cummulate mineral found in ultramafic portions of layered mafic intrusions.

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 Chromium Ore, Properties, Uses and Occurrence

2019-7-2  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.

Chromite Handbook of Mineralogy

2007-9-30  Occurrence: A cumulus mineral in ultramafic portions oflayered mafic igneous rocks; an accessory mineral in alpine-type peridotites; also detrital. Common in all meteorites, except carbonaceous chondrites, and in lunar mare basalts. Association: Olivine, enstatite, plagioclase, serpentine, magnetite, ilmenite, pyrrhotite, pentlandite, ulvospinel.

(PDF) Chromite ResearchGate

Chromite ore is one of Turkey’s major income sources in primary mineral exports. Ferrochrome production of Turkey was different between 2007 and 2011, at 69.73 e

Chromite mining 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. The strategic mineral concept was created during World War I and became law just prior to World War II with the passage of the Strategic Minerals Act

铬铁矿_百度百科

2021-1-27  铬铁矿(块状、等轴晶系)(Chromite massive Isometric)是岩浆作用的矿物,常产于超基性岩中,与橄榄石共生;也见于砂矿中。外表看来很像磁铁矿,一般呈块状或粒状的集合体。在冶金工业上,铬铁矿主要用来生产铬铁合金和金属铬。铬铁合金

Chromite: The only mineral ore of chromium metal

What is Chromite? 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: 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.It is the iron analogue of Zincochromite, Cochromite, Manganochromite and Magnesiochromite and the Cr analogue of Hercynite

Chromite an overview ScienceDirect Topics

The chromite mineral is an iron chromium oxide (FeCr 2 O 4, Fig. 1.37). The chromite mineral is the primary source of chromium metal with applications in hard rustles steel, chrome plating, anodizing of aluminum, super refractory bricks, pigments and dyes, synthetic ruby, wood preservative, leather tanning, and catalysts for hydrocarbon processing.

Chromite Handbook of Mineralogy

2007-9-30  Occurrence: A cumulus mineral in ultramafic portions oflayered mafic igneous rocks; an accessory mineral in alpine-type peridotites; also detrital. Common in all meteorites, except carbonaceous chondrites, and in lunar mare basalts. Association: Olivine, enstatite, plagioclase, serpentine, magnetite, ilmenite, pyrrhotite, pentlandite, ulvospinel.

(PDF) Chromite ResearchGate

Chromite ore is one of Turkey’s major income sources in primary mineral exports. Ferrochrome production of Turkey was different between 2007 and 2011, at 69.73 e

Chromite mining 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. The strategic mineral concept was created during World War I and became law just prior to World War II with the passage of the Strategic Minerals Act

(PDF) Chromitites of the Urals (Part 1): Overview of

Published and unpublished compositions of chromite in 333 chromitite samples from 14 ultramafic complexes of the Urals are overviewed. The chromitites occur in the mantle unit and/or the supra

Oman Chromite

The mountains of Oman are rich in mineral deposits. Copper ore is being mined in the northern Oman. The ore is processed into electrolytically refined copper cathodes for export. Gold and silver are produced as by-products for export. The Sultanate has also started mining chromite and exporting since early 80’s.

Nichromite Mineral Data

Replacing chromite in a small tabular nickel deposit at the contact between quartzite and serpentinized ultramafics. IMA Status: Approved IMA 1978 : Locality: Bon Accord deposit, Barberton, Transvaal, South Africa. Link to MinDat Location Data. Name Origin: Named for chromite with dominant nickel, Ni. Name Pronunciation: Nichromite

THE MINERAL CHROMITE Amethyst Galleries'

THE MINERAL CHROMITE. Chemical Formula: FeCr2O4, Iron Chromium Oxide. Class: Oxides and Hydroxides; Group: Spinel; Uses: The principle ore of chromium, as a refractory component, as a dye and as mineral specimens. Specimens. Chromite is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a

Chromite Sibelco

Introduction . Chromite is a mineral that is an iron chrome oxide. It has a chemical formula of FeCr 2 O 4.. The main constituent of Portachrome A is chromite. Chromite is a

(PDF) Chromite ResearchGate

Chromite ore is one of Turkey’s major income sources in primary mineral exports. Ferrochrome production of Turkey was different between 2007 and 2011, at 69.73 e

Chromite mining 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. The strategic mineral concept was created during World War I and became law just prior to World War II with the passage of the Strategic Minerals Act

Chromite- Zambales ccil

In areas and licenses with mineral potential, Memorandum of Agreements and Supply Agreements were signed to provide and supply low grade chromite for the mineral processing plant. Regional to semi-detailed geological surveys were also implemented by the technical staff of CCILMMRC in search of chromite and other base metals within the region.

Uses of Chromium Supply, Demand, Production,

2 天前  Chromite, an oxide of iron, magnesium, aluminum, and chromium, is the only ore mineral of chromium. In nature, chromite deposits are generally of two major types: stratiform (layered) and podiform (pod shaped). Both types are associated with ultramafic igneous rocks. The world's largest stratiform chromite deposits are found in South Africa, in

Oman Chromite

The mountains of Oman are rich in mineral deposits. Copper ore is being mined in the northern Oman. The ore is processed into electrolytically refined copper cathodes for export. Gold and silver are produced as by-products for export. The Sultanate has also started mining chromite and exporting since early 80’s.

Magnesiochromite: The mineral magnesiochromite

Magnesiochromite is very similar to Chromite, and is often mistaken for it.Due to their similarity, it is very difficult to visually distinguish these two minerals. Magnesiochromite is the magnesium-dominating form in a series with Chromite, whereas Chromite is iron-dominating.

Rand York Minerals/home Chrome Trading Rand

Rand York Minerals (Pty) Ltd processes and markets foundry chromite sand and chemical grade chromite sourced from various suppliers in Southern Africa. All material is mined in the heart of the Bushveld Complex, the principal chromite deposit in South Africa. Rand York was established in 1992.

Mineral Resources Philippine Statistics Authority

Copper accounted for the bulk of metallic mineral resources of about 72 percent; while nickel’s share was estimated at 16 percent (Figure 1). Among the non-metallic minerals, limestone and marble accounted for about 39 and 29 percent, respectively (Figure 2). In terms of chromite resources, the Philippines is also one of the most endowed