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telluride gold ore extraction

Metallurgy for Recovering Gold from Telluride Ore

Gold ore associated with Telluride is hardly soluble in ordinary cyanide solutions and special treatment is necessary for its extraction. There are two methods in use in such cases. Roasting The ore is ground dry to about 30 mesh and roasted; it is then ground to a slime in water or cyanide solution, usually in grinding pans, utilizing the opportunity simultaneously to amalgamate any gold

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Telluride an overview ScienceDirect Topics

Oct 03, 2010Roasting followed by cyanidation proved to be the preferred method to extract gold from telluride ores. Ultrafine milling of a flotation concentrate followed by cyanidation replaced roasting because of environmental issues.

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Sulfur HexafluorideAug 31, 2011Beta Cyclodextrin DerivativeNov 08, 2010Cadmium TellurideJul 20, 2010Terry TowelJun 01, 2007查看更多结果

Method to extract gold from telluride ores and concentrates

For the extraction of gold from telluride ores in practice, the use of melting on the lead or copper collector. If you cannot melting telluride ore lanroot in special modes. Alternative smelting is firing tellurite and cyanide leaching of the calcine. Direct cyanide leaching of gold from telluride ores slow.

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Calaverite Wikipedia

OverviewPhysical and chemical propertiesStructureOccurrenceSee alsoFootnotesSources

Calaverite, or gold telluride, is an uncommon telluride of gold, a metallic mineral with the chemical formula AuTe2, with approximately 3% of the gold replaced by silver. It was first discovered in Calaveras County, California in 1861, and was named for the county in 1868. The mineral often has a metallic luster, and its color may range from a silvery white to a brassy yellow. It is closely related to the gold-silver telluride mineral sylvanite, which, however, contains

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Coloradoite Wikipedia

Tellurides of gold were first discovered in 1782 in Transylvania and subsequently other telluride ores were found in other parts of the world (Mark and Scibird, 1908). The first discovery and description of coloradoite was by Frederick Augustus Genth in the Boulder veins of Colorado in 1877 [7] and so named after the place of discovery.

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Crystal class: Hextetrahedral (43m), H–M Symbol:

Telluride Colorado Western Mining History

The town of Telluride, on the headwaters of the San Miguel River, is a quintessential western mining town. Probably named when a prospector mistook a rock sample for telluride ore (a type of rich, complex gold ore which was actually not what he had found,) the area experienced a gold rush starting in 1875 however its history reaches back much further.

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Calaverite (gold telluride) Western Australian Museum

Gold-bearing tellurides were first identified in the Golden Mile deposits in May 1896, three years after the first discovery of gold. Prior to 1896, rocks containing tellurides were not recognised as rich gold ores, looking somewhat like pyrite (or fool’s gold)-bearing waste, and were discarded, strewn on cart tracks and walkways, and also used as building stone.

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Roasted Gold Telluride Ore from Cripple Creek, Colorado

This was a result of a roasting process that was commonly used in this part of Colorado to process the telluride-rich ores from the mines. This caused most of the Telluride minerals (calaverite, sylvanite) to leave and leave behind the gold in

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Telluride Colorado Western Mining History

Telluride History The town of Telluride, on the headwaters of the San Miguel River, is a quintessential western mining town. Probably named when a prospector mistook a rock sample for telluride ore (a type of rich, complex gold ore which was actually not what he had found,) the area experienced a gold rush starting in 1875 however its history reaches back much further.

get price

Treatment of gold-telluride ores ScienceDirect

Jan 01, 2005Gold tellurides are treated commercially in a small number. The leaching of telluride ores has always been problematical with a perceived mismatch of findings between the researchers and the operators as to the recoverability of gold by cyanide leaching of gold-telluride ores without some form of oxidative pre-treatment step.

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Photos of gold ores, quartz, telluride gold ore and gold

The fourth class of gold ores comprises the gold-telluride group. The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. They are often low in grade but large.

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Roasted Gold Telluride Ore from Cripple Creek, Colorado

A piece of roasted gold ore from Cripple Creek, Colorado. You will notice that the gold is formed into an almost bubbly showing on the surface. This was a result of a roasting process that was commonly used in this part of Colorado to process the telluride-rich ores from the mines.

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Calaverite (gold telluride) Western Australian Museum

Therefore, extracting gold from telluride minerals, such as calaverite, which contains around 42% gold, has been very important in the history of Kalgoorlie mining, producing around 300 tonnes of gold. Gold-bearing tellurides were first identified in the Golden Mile deposits in May 1896, three years after the first discovery of gold.

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Extraction from Gold Ores Mac Arthur Forrest Cyanide Process

The extraction of gold from the sulphide or telluride ore involves the following . steps : i) Crushing, grinding and concentration . The gold ore is crushed and powdered, and then concentrated by froth- floatation process. ii) Roasting

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Colorado Mining Conference

In 1893 when repeal of the Sherman Silver Purchase Act devastated silver mining in Colorado, Telluride was fortunate to find enough new gold ore bodies to keep its mines open. In fact, by 1896, two-thirds of the district’s $3 million in ore production came from gold, and only a year later, this value jumped to an estimated $25 million.

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Gold-silver telluride ores, Colorado, U.S.A., I

The mining districts and their ores have been described by some of the giants in American geology, including Silliman, Lindgren and Emmons. Prior to the mining period, Silliman (1874) described the geology and telluride mineralogy of the Gold Hill area, comparing the veins to the more complex ores from Nagyag in Transylvania.

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Tellurium Production

Tellurium is extracted by sulphide ores processing from semi-products of copper, lead-zinc manufacture, as well as from some gold ores. Copper electrolysis sludge which contains from 0.5 to 2% Tellurium, as well as silver, gold, selenium and copper may me used as main feed stock in Tellurium production. For this purpose sludge first should be freed from copper and selenium;

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Rebellious Ores: Sulfides, Selenides and Tellurides

Sylvanite: A rich telluride of gold and silver. After calaverite, sylvanite is probably the next most important telluride ore mineral. It can assay as high as 30% gold. It is found with other telluride minerals in some precious metal ore deposits. Petzite: A gold and silver telluride that is mostly silver. Silver content is usually three times

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Telluride, Colorado Wikipedia

Mining days. Gold was first discovered in Colorado near present-day Denver, setting off the Pike's Peak gold rush of 1858.The Smuggler gold vein above Telluride, and placer gold in the San Miguel River, were discovered in 1875.: 51,54 John Fallon made the first claim in Marshal Basin above Telluride in 1875 and early settlement of Telluride followed. . The town itself

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Processing technologies for gold-telluride ores SpringerLink

Feb 12, 2010Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed. The results show that flotation procedures are much easier for gold

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Black SandTellurides Recreational Gold Prospecting

This is another telluride of silver/gold. Not so significant as the above. Sylvanite A telluride of gold and silver. It can assay as high as 20% gold. Petzite Another telluride that is mostly silver. Silver content is usually twice that of gold. Hessite Resembles Petzite. Usually about 60% silver. Sulfides A sulfide is a reduced salt of sulfur.

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Telluride Chief Mineral Property Gold Rush Expeditions, Inc.

The Telluride Chief Mine is a Gold mine with silver and Molybdenum deposits associated. The mine is sunk in the intersection of the Prince George and Banner lodes which have been noted for substantial gold values. The ore streaks are said to be 3

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Photos of gold ores, quartz, telluride gold ore and gold

The fourth class of gold ores comprises the gold-telluride group. The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. They are often low in grade but large.

get price

Tellurium Production

Tellurium is extracted by sulphide ores processing from semi-products of copper, lead-zinc manufacture, as well as from some gold ores. Copper electrolysis sludge which contains from 0.5 to 2% Tellurium, as well as silver, gold, selenium and copper may me used as main feed stock in Tellurium production. For this purpose sludge first should be freed from copper and selenium;

get price

Calaverite Wikipedia

Calaverite, or gold telluride, is an uncommon telluride of gold, a metallic mineral with the chemical formula AuTe 2, with approximately 3% of the gold replaced by silver.It was first discovered in Calaveras County, California in 1861, and was named for the county in 1868.

get price

Extraction from Gold Ores Mac Arthur Forrest Cyanide Process

The extraction of gold from the sulphide or telluride ore involves the following . steps : i) Crushing, grinding and concentration . The gold ore is crushed and powdered, and then concentrated by froth- floatation process. ii) Roasting

get price

telluride gold ore extraction bhcph.co.za

Grinding Mill PFW Series Impact Crusher VSI5X how to extract gold from telluride chinese gold processing sale south africa Gold Ore Crusher. gold ore mining and process in zimbabwe. in the Mpumalanga region of South Africa is the second biggest gold mine break platinum containing ore and immerse bodies of an impact crusher.

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Processing technologies for gold-telluride ores SpringerLink

Feb 12, 2010Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed. The results show that flotation procedures are much easier for gold

get price

Gold-silver telluride ores, Colorado, U.S.A., I

The mining districts and their ores have been described by some of the giants in American geology, including Silliman, Lindgren and Emmons. Prior to the mining period, Silliman (1874) described the geology and telluride mineralogy of the Gold Hill area, comparing the veins to the more complex ores from Nagyag in Transylvania.

get price

Telluride, Colorado Wikipedia

Mining days. Gold was first discovered in Colorado near present-day Denver, setting off the Pike's Peak gold rush of 1858.The Smuggler gold vein above Telluride, and placer gold in the San Miguel River, were discovered in 1875.: 51,54 John Fallon made the first claim in Marshal Basin above Telluride in 1875 and early settlement of Telluride followed. . The town itself

get price

Rebellious Ores: Sulfides, Selenides and Tellurides

Sylvanite: A rich telluride of gold and silver. After calaverite, sylvanite is probably the next most important telluride ore mineral. It can assay as high as 30% gold. It is found with other telluride minerals in some precious metal ore deposits. Petzite: A gold and silver telluride that is mostly silver. Silver content is usually three times

get price

Black SandTellurides Recreational Gold Prospecting

This is another telluride of silver/gold. Not so significant as the above. Sylvanite A telluride of gold and silver. It can assay as high as 20% gold. Petzite Another telluride that is mostly silver. Silver content is usually twice that of gold. Hessite Resembles Petzite. Usually about 60% silver. Sulfides A sulfide is a reduced salt of sulfur.

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Identification of Tellurides

The writer is especially indebted to Dr. M. N. Short of the University of Arizona for helpful criticism and permission to use the data which appears in his "Microscopic Determination of the Ore Minerals," U. S. Geological Survey, Bulletin 825, 1931. IDENTIFICATION OF THE TELLURIDES

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Telluride Chief Mineral Property Gold Rush Expeditions, Inc.

The Telluride Chief Mine is a Gold mine with silver and Molybdenum deposits associated. The mine is sunk in the intersection of the Prince George and Banner lodes which have been noted for substantial gold values. The ore streaks are said to be 3

get price

Process Mineralogy of Gold: Gold from Telluride-Bearing Ores

GOLD-SILVER TELLURIDE DEPOSITS The most common metallurgical practices for extraction of gold from gold ore involve gravity concentration, cyanidation, and fl otation.3 For ores that

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(PDF) TELLURIDE AND SELENIDE MINERALS IN GOLD DEPOSITS

deposit, Phillipines in which native gold ore is located beneath Au(Ag)-telluride ore (Cooke and McPhail, 2001). Repetitive boiling is believed to account for gold precipitation, with

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