zonedmnrich chromite from podiform type chromite ore in

ZonedMn-rich chromite from podiform type chromite …

ZonedMn-rich chromite from podiform type chromite ore in serpentinites of northern Greece Gr,once M. PnncsrEvoPoulos Institute of Ore Deposits GeologY University of Athens, Greece AND MARIA ECONOMOU Institute of Mineralogy and Petrologlt University of Athens, Greece Abstract Magnetite-chromite ore occurs as small lenses or dikes at the peripheral parts of serpenti-nites of northern Greece.

ZonedMn-rich chromite from podiform type chromite ore in ...

Magnetite-chromite ore occurs as small lenses or dikes at the peripheral parts of serpenti- nites of northern Greece. Cores of chromite are surrounded by small zones of ferrit-chromit and rins of ...

Podiform Chromite Deposits—Database and Grade and …

or reserve data for most of the podiform chromite deposits. In this paper, 619 deposits with reliable tonnages and grades are used to construct revised grade and tonnage models. We present three new models: major podiform chromite, minor podiform chromite, and banded podiform chromite deposits.

occurrence of chromite ore suppliers -

Chromite is the only ore of chromium, a metal essential for making stainless steel, nichrome, chrome However, chromite deposits that are large enough for mining are generally found in: 1) stratiform Uses of Chromite and Chromium

Refractory- and metallurgical-type chromite ores, …

Regional distribution of refractory- and metallurgical-type chromite ores in the Zambales Range Fernandez (1960) first described the systematic distribu- tion of refractory- and metallurgical-type chromite depo- sits in the Masinloc massif. Refractory-type chromitites

Chromite Deposits -

Chromite in the podiform deposits forms often anhedral, cracked grains. A peculiar feature of these ores is the nodular texture characterized by loosely-packed ellipsoidal chromite nodules with sizes between 5 and 20 mm. Minerals other than chromite are olivine, orthopyroxene, clinopyroxene, pargasite, Na-mica, albite, and jadeite.

Podiform chromite deposits - USGS

Ore type. Type of ore present in the deposit: metallurgical, refractory, or chemical. Textual values of no more than 13 characters. depage Age of deposit. Geochronologic unit during which the deposit was formed. Textual values of no more than 119 characters.

Chromite - Wikipedia

Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth's mantle.It also occurs in layered ultramafic intrusive rocks. In addition, it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, serpentine, and corundum.

Crystal class: Hexoctahedral (m3m), H-M symbol: (4/m 3 2/m)Mohs scale hardness: 5.5Crystal system: IsometricCrystal habit: Octahedral rare; massive to granularOccurrence· Uses· Mining

Chromite: The only mineral ore of chromium metal - Geology

Chromite is important because it is the only economic ore of chromium, an essential element for a wide variety of metal, chemical, and manufactured products. Many other minerals contain chromium, but none of them are found in deposits that can be economically mined to produce chromium.

Chromite deposits in China and their origin - Springer

Types of chromite deposits and their geological settings Chromite deposits have been subdivided into podiform and stratiform types according to the geometry of the ore bodies and the characteristics of their host rocks (Thayer 1969, Leblanc and Temagoult 1989 and references therein).

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