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cobaltite mined encyclopedia

Cobaltite Encyclopedia

cobalt (symbol Co) Metallic element, a transition metal, discovered c.1735.It is found in cobaltite and smaltite, but mostly obtained as a by-product during the processing of other ores. Cobalt is a constituent of vitamin B 12.It is used in high-temperature steel, artists' colours (cobalt blue), jet engine manufacture, cutting tools and magnets. Cobalt-60 (half-life 5.26yr) is an artificial

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Cobaltite Wikipedia

Cobaltite is a sulfide mineral composed of cobalt, arsenic, and sulfur, CoAsS. Its impurities may contains up to 10% iron and variable amounts of nickel. Structurally, it resembles pyrite (FeS2) with one of the sulfur atoms replaced by an arsenic atom. Although rare, it is mined as a significant source of the strategically important metal cobalt. Secondary weathering incrustations of erythrite, hydrated cobalt arsenate, are common.

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Cobaltite mineral Encyclopedia Britannica

Cobaltite, a cobalt sulfoarsenide mineral in which iron commonly replaces part of the cobalt [(Co,Fe)AsS], that occurs in high-temperature deposits. Notable occurrences are at Daşkäsän, in the lesser Caucasus, Azerbaijan; Tunaberg, Swed.; and Rājasthān, India. Cobaltite, like its relatives gersdorffite and ullmannite, crystallizes in the isometric system and is closely related to pyrite.

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cobaltite mined encyclopedia fumorestaurant.au

the free encyclopedia,how is cobaltite mined Coal Crushing plant ball mill for sale for coarse fine grinding gold ores in South Africa . Get Price; Inquire Now; Cobaltite: The mineral cobaltite information and pictures. Cobaltite is mined for its cobalt content. Well-formed crystals, especially those from Sweden, are highly valued classics

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SKM-cobaltite mined encyclopedia eFlow Benelux

mines where the mineral ore cobaltite is found Ore Wikipedia, the free encyclopedia An ore deposit is an accumulation of ore Now this is distinct from a mineral resource as defined by the mineral,[24/7 online] Mining and Minerals Flashcards Quizlet Start

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Cobaltite Article about cobaltite by The Free Dictionary

cobaltite (kō`bôltīt, kōbôl`tīt), opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of the cubic system, also in compact to granular masses. It is an important ore of cobalt, found chiefly in Sweden, Norway, India, and Azerbaijan. The Columbia

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cobalt processing Uses, Supply, & Facts Britannica

In the copper-nickel-iron sulfide mines of Canada, Australia, Russia, and other regions, cobalt is present in place of nickel in many minerals. Cobalt arsenides,such as smaltite, safflorite, and skutterudite,with the sulfoarsenide cobaltite and the arsenate erythrite,are mined in Morocco and on a much smaller scale in many other countries.

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Cobalt extraction Wikipedia

Cobalt extraction refers to the techniques used to extract cobalt from its ores and other compound ores. Several methods exist for the separation of cobalt from copper and nickel.They depend on the concentration of cobalt and the exact composition of the used ore

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Cobaltite CAMEO

Cobaltite is a combined sulfur and arsenic salt of cobalt. It is mined in Canada (Ontario), Zaire, Azerbaijan, India (Rajasthan), England, Norway, and Sweden (Tunaberg). Cobaltite has a metallic luster with a grayish black streak.

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Cobaltite chemeurope

Although rare it is mined as a significant source of the strategically important metal cobalt. Secondary weathering incrustations of erythrite, hydrated cobalt arsenate, are common.. The name is from the German, Kobold, "underground spirit" in allusion to the refusal of cobaltiferous ores to smelt properly. It occurs in high temperature hydrothermal deposits and contact metamorphic rocks.

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cobaltite Infoplease

cobaltite kō´bôltīt, kōbôl´tīt,opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of the cubic system, also in compact to granular masses.

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COBALT Encyclopaedia Iranica

Cobaltite was still being mined at Qamṣr in the 19th century: “Cobalt (ḵāk-e lājavarḍ . . . ) is found in considerable quantities near Kāšān in the village of Qamṣar. The mine is the property of a sayyed family. Significant amounts of cobalt ore are said to be exported to Russia” (Polak, II, p. 177).

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Cobaltite Encyclopedia

COBALTITE, a mineral with the composition CoAsS, cobalt sulpharsenide. It is found as granular to compact masses, and frequently as beautifully developed crystals, which have the same symmetry as the isomorphous mineral pyrites, being cubic with parallel hemihedrism.

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Cobaltite an overview ScienceDirect Topics

M.A. Tabatabai, in Encyclopedia of Soils in the Environment, 2005. Sources of Sulfur in soils Minerals Sources. Many S-containing minerals occur in nature. The main S-bearing minerals in rocks and soils are present in two states: (1) as sulfate, such as in gypsum (CaSO 4 · 2H 2 O), anhydrite (CaSO 4), epsomite (MgSO 4 · 7H 2 O), and mirabilite (Na 2 SO 4 · 10H 2 O); or (2) as sulfide, such

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Cobaltite an overview ScienceDirect Topics

Oct 03, 2010· Cobaltite is a strategically significant mineral (Fig. 1.17) composed of cobalt, arsenic, and sulfur (CoAsS) crystallizing in the orthorhombic (or pseudocubic) system resembling pyrite.It contains up to 10% iron and a valuable amount of nickel. The name is derived from the German “Kobold” meaning “underground spirit” or “goblin” in allusion to the refusal of cobaltiferous ore to

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Cobaltine Article about cobaltine by The Free Dictionary

cobaltite (kō`bôltīt, kōbôl`tīt), opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of the cubic system, also in compact to granular masses. It is an important ore of cobalt, found chiefly in Sweden, Norway, India, and Azerbaijan. Cobaltite a

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Cobalt Encyclopedia

COBALT (REVISED) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. Overview Humans have been using compounds of cobalt since at least 1400 b.c. The compounds were used to color glass and glazes blue.

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Cobaltite Article about cobaltite by The Free Dictionary

cobaltite (kō`bôltīt, kōbôl`tīt), opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of the cubic system, also in compact to granular masses. It is an important ore of cobalt, found chiefly in Sweden, Norway, India, and Azerbaijan. The Columbia

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cobalt Definition & Facts Encyclopedia Britannica

With few exceptions, cobalt ore is not usually mined for the cobalt content. Rather, it is often recovered as a by-product from the mining of ores of iron, nickel, copper, silver, manganese, zinc, and arsenic, which contain traces of cobalt.Complex processing is required to

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Erythrite Wikipedia

Erythrite crystallizes in the monoclinic system and forms prismatic crystals. The color is crimson to pink and occurs as a secondary coating known as cobalt bloom on cobalt arsenide minerals. Well-formed crystals are rare, with most of the mineral manifesting in crusts or small reniform aggregates.

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