a cromita mineral

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Chromite - Wikipedia

Chromite is an iron chromium oxide: FeCr 2 O 4.It is an oxide mineral belonging to the spinel group.Magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr 2 O 4); substitution of aluminium occurs leading to hercynite (FeAl 2 O 4).. It is by far the most industrially important mineral for the …

Chromium processing | Britannica.com

Chromium processing: Chromium processing, preparation of the ore for use in various products. Chromium (Cr) is a brilliant, hard, refractory metal that melts at 1,857 °C (3,375 °F) and boils at 2,672 °C (4,842 °F). In the pure state it is resistant to ordinary corrosion, resulting in its application as an electroplated

Chromite Mineral Information and Facts - Chrome Ore

Scientific facts about the mineral Chromite, including characteristics, use as a chrome ore and occurances

chromite mineral appliion - iappleboy.com

ChromiteWikipediaChromite is an iron chromium oxide: FeCr 2 O 4. It is an oxide mineral belonging to the spinel group. Magnesium can substitute for iron in variable ...

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 ...

Chromite | mineral | Britannica.com

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, oxide of magnesium and chromium (MgCr 2 O 4).Chromite is commonly found as …

USGS Minerals Information: Chromium

Statistics and information on the worldwide supply, demand, and flow of chromium

Mineral Properties, Photos, Uses and Descriptions

Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.

Chromium: A Thoroughly Modern Metal - Dartmouth …

Chromium: A Thoroughly Modern Metal Hidden in Plain Sight. Crocoite is unusual in appearance but rarely found. Beginning with the use of chrome plating in the art deco designs of the 1930s through its heyday in the cars, furniture and appliances of the 1950s and 1960s, chromium has been closely associated with the fast-paced modern world.

How is chromite used? | Reference.com

Chromite, a mineral ore that is mined from crystallized magma, is used in the production of steel as a pigment and as a catalyst in many chemical reactions. It is also an important component of the...

Chromium | Minerals Education Coalition

Chromium (Cr) is a hard, bluish metallic element. The only ore of chromium is the mineral chromite and 99 percent of the world's chromite is found in southern Africa and Zimbabwe. Geologists estimate that there are about 11 billion tons of mineable chromite ore in the world, enough to supply the current demand for

Chromite News, Prices and Features | Industrial Minerals

Chromite is the commercial name for iron chromium oxide (FeCr 2 O 4), a mineral containing chromium (a transition metal with multiple oxidation states) and iron oxide.

Chromite Mining Process | Mining | Ore - Scribd

Chromite Mining Process. 1 What is Chromite? ... Chromite is a key industrial mineral used for manufacturing stainless steel because of its very high

Chromite: Chromite mineral information and data.

Chromite was named in 1845 by Wilhelm Haidinger in allusion to its composition. The species was originally named fer chromate alumine by Louis Nicolas Vauquelin in 1798. Vauquelin was the discoverer of the element chromium.

Chromite and Other Mineral Deposits in Serpentine …

Chromite and Other Mineral Deposits in Serpentine Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware By NANCY C. PEARRE and ALLEN V. HEYL, JR.

Chromite Mining Process | Mining | Ore

Chromite Mining Process. 1 What is Chromite? Chromite ore is rock that contains a high enough concentration of chromite to have economic value. Chromite is the principle ore of the element chromium. Chromite is a key industrial mineral used for manufacturing stainless steel because of its very high melting point. Rock Containing Chromite …

Chromite: The mineral Chromite information and pictures

Detailed description, properties, and locality information guide about the chromium mineral chromite.

Chromium - Wikipedia

Chromium was discovered as an element after it came to the attention of the Western world in the red crystalline mineral ... Chromite is now the ...

Chemical Database: Chromite (mineral ...

This page contains information on the chemical Chromite (mineral) including: 3 synonyms/identifiers.

Chromite News, Prices and Features | Industrial Minerals

Chromite is the commercial name for iron chromium oxide (FeCr 2 O 4), a mineral containing chromium (a transition metal with multiple oxidation states) and iron oxide. In its purest form, chromite comprises chromium (Cr 2 O 3) at 68% and iron oxide (FeO) at 32%. Chromite occurs exclusively in ultramafic rocks such as dunite, peridotite ...

California Geological Survey - Mineral and Rocks - Chromite

Chromite is a heavy, black mineral that has about the same specific gravity as barite. Its hardness is close to that of steel ...

Chromite - MGT MINERAL

Chromite. A mineral deposit is defined as a mineral occurrence of sufficient size and grade that might, under the most favorable circumstances, be considered to have economic potential.

Cromita – Wikipédia, a enciclopédia livre

Cromita é um óxido duplo de ferro e cromo: ( FeCr 2 O 4), contendo 32,1% de FeO e 67,9% de Cr 2 O 3. É um óxido mineral pertencente ao grupo dos espinélios.O magnésio está presente sempre em quantidades váriáveis como, também, o ferro e o alumínio substituindo o cromo. Portanto, a cromita pode apresentar composição …

Chromite Mineral Data

McDougall Minerals Google Search for Chromite Mineral News Website Link Rock and Mineral Shows Google Search for Chromite Weinrich Minerals, Inc. Google Search for Chromite. Ask about Chromite here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat.org's Discussion Groups Original Rockhounds Discussion Group …

GEOLOGY AND MINERALOGY

Chromium ore, or chromite, occurs exclusively in rocks formed by the intrusion and solidification of molten lava or magma which is very rich in the heavy, iron containing minerals such as pyroxenes and olivines. Within these rocks, often referred to as ultramafic igneous rocks, chromium occurs as a chromium spinel, a highly complex mineral …

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 ...

Minerals | 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.

Chromite: The only mineral ore of chromium metal

Chromite is the only ore of chromium, a metal essential for making stainless steel, nichrome, chrome plating, pigments, refractories, chemicals and pharmaceuticals.

Chromite - Revolvy

Chromite is an iron chromium oxide : FeCrO. It is an oxide mineral belonging to the spinel group . Magnesium can substitute for iron in variable amounts as it forms a ...

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.

Mineral Commodity Summaries 2015 - USGS

Domestic Production and Use: In 2014, the United States was expected to consume about 5% of world chromite ... Mineral Commodity Summaries, January 2015 . Title:

Chromite mineral information and data - Dakota Matrix …

Chromite - Named for the content of chromium. Chromite is a common and widespread mineral that occurs in the ultramafic layers of layered igneous intr

Chromium | Minerals Education Coalition

Chromium is chiefly obtained from the mineral chromite. It is mined in South Africa, Kazakhstan, India, Albania, and Turkey. Related topics: Chromium Minerals.

chrome ore, chromite mineral - miningbmw.com

Chromite Mineral Information and Facts - Chrome Ore. Scientific facts about the mineral Chromite, including characteristics, use as a chrome ore and occurances

Cochromite Mineral Data

Replacing chromite in a small tabular nickel deposit in a contact between quartzite and ... McDougall Minerals Google Search for Cochromite Mineral News Website ...

Extraction of Chromium from Chromite Ore

Chemical-grade chromite ore generally ranged from 40 to 46 pct Cr2O3 with a chromium-to-iron ratio of 1.5:1 to 2:1. Refractory-grade chromite ores contained a minimum of 20 pct Al2O3 and more than 60 pct Al2O3 plus Cr2O3. Primary chromium needs for all uses in the United States by the year 2000 are estimated to be nearly three times its …