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telluride gold ore extraction:

Processing technologies for gold-telluride ores

The presence of gold telluride minerals may render an ore refractory, the extent of this depends on the telluride mineral present and the mineralogical association [3]. Gold, silver, and gold/silver-telluride minerals in ores dissolve more slowly than native gold in cyanide solutions, which results in less efficient gold extraction [4].

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Metallurgy for Recovering Gold from Telluride Ore

Sep 07, 2016  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 ...

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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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Treatment of Gold–Telluride Ores - ScienceDirect

Jan 01, 2016  Treatment of telluride ore began in Vanuwtu, Fiji, in 1934 using a conventional refractory treatment circuit using roasting followed by cyanide leach of the calcine. A hydrometallurgical treatment method for the leaching of gold telluride along with the production of tellurium metal was devised at Emperor Gold Mine (Cornwall and Hisshion, 1976 ...

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Processing technologies for gold-telluride ores

The low gold extraction can be attributed to the fact that some of the gold in the ore occurs as gold telluride minerals having slow dissolution characteristic in cyanide solutions, which results ...

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Treatment of gold-telluride ores - ScienceDirect

Jan 01, 2005  Gold 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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Process mineralogy of gold: Gold from telluride-bearing ores

Petrographic and microanalytical studies of gold in gold-silver telluride deposits show that it occurs as “visible gold” extracted by cyanidation, and as visible gold and “invisible gold” that are unamenable to cyanidation. Two gold-bearing tellurides, calaverite and buckhornite, are considerably less amenable to cyanidation in comparison to Au-Ag tellurides.

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Telluride Gold Mine Near Oatman, Arizona The Diggings™

The Telluride Gold Mine is a underground mining operation. Mine operations consist of underground workings. There is one known shaft. Subsurface depth reaches a maximum of 213 meters (700 feet). The ore mined is composed of gold with waste material consisting primarily of calcite and quartz. The ore body has a lenticular or lens shaped form 914 ...

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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.

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Gold Ore Roasting Techniques

Jul 14, 2016  In the case of many complex gold and silver ores roasting before cyanidation is essential if satisfactory extraction of the precious metals is to be obtained. ... Roasting and Processing Sulpho-telluride ore to recover gold. This roasting plant, since closed down, was equipped with eight standard 70-spindle Edwards roasters, though only four ...

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Treatment of gold-telluride ores - ScienceDirect

Jan 01, 2005  Gold 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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Process mineralogy of gold: Gold from telluride-bearing ores

Petrographic and microanalytical studies of gold in gold-silver telluride deposits show that it occurs as “visible gold” extracted by cyanidation, and as visible gold and “invisible gold” that are unamenable to cyanidation. Two gold-bearing tellurides, calaverite and buckhornite, are considerably less amenable to cyanidation in comparison to Au-Ag tellurides.

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Processing technologies for gold-telluride ores SpringerLink

Feb 12, 2010  Gold 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 tellurides compared to other ...

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Gold Extraction from Different Types of Ore

Jan 10, 2020  10. Telluride gold ore. Telluride gold ores generally refer to ores containing natural gold and sulfide minerals, which have high economic value. Gold extraction from this type of ore can be different, because whether this ore contains silver or not, it dissolves very slowly in cyanide solutions, so a pre-oxidation stage is usually added before ...

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A WET AND CRUCIB1E-FIRE METHODS - USGS

METHODS OF ASSAY OF GOLD TELLURIDE ORES. [BOLL. 253. through the kindness of Mr. W. M. Bainbridge, of the El Paso Con­ solidated Gold Mining Company, and of Dr. Waldemar Lindgren, of the Geological Survey, the samples were marked 6 and 12 ounces per ton respectively, but they were actually much richer and of nearly

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Mineral Transformations in Gold–(Silver) Tellurides in the ...

Gold–(silver) telluride deposits normally contain a dozen or more different telluride and selenide minerals and present complex ore textures. An example is seen in the ores of the recently discovered Sandaowanzi gold deposit, where sylvanite is the most abundant gold-bearing mineral and together with petzite and krennerite accounts for >60% ...

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Telluride - an overview ScienceDirect Topics

S.K. Haldar, in Platinum-Nickel-Chromium Deposits, 2017 1.3.5.2 Calaverite. Calaverite or gold telluride is an uncommon telluride of gold mineral with chemical formula (AuTe 2).It was discovered in Calaveras County, California, in 1861 and named for the county. The color ranges between brass-yellow and silvery-white with green to yellow-green streak and metallic luster. The harness is between ...

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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. This caused most of the Telluride minerals (calaverite ...

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The reasons of gold refractory, Gold ore classification ...

Nov 28, 2016  4. Telluride and sulfur-salt gold ore. In order to dissociate telluride and sulfur-salt and make the gold’ recovery easier, generally, we use hypochlorite chlorination processing, roasting, and ...

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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.. The mineral often has a metallic luster, and its color may range from a silvery white to a brassy yellow.

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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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Refractory Gold Ore Treatment Methods

Jul 14, 2016  Gold Leaching Processing of Arsenic Ore. Mispickel (Arsenopyrite: FeAsS).6. Leaching and Recovering Gold from Antimony Minerals. Stibnite (Antimony Sulphide, Sb2S2) Telluride Gold Ore Processing. Solubility of Tellurides. Gold Extraction from Carbonaceous Ore. List Gold Refractory Process Methods. Where gold is associated with arsenic ...

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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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Mineral Resource of the Month: Tellurium

Jun 13, 2018  Tellurium is currently recovered as a byproduct of nonferrous metal mining, principally from the anode slimes associated with electrolytic refining of copper. In copper ores, tellurium forms stable crystalline compounds (called tellurides) of gold, silver, bismuth, mercury, platinum and palladium that tend to accumulate in residual ore fluids.

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Treatment of gold-telluride ores - ScienceDirect

Jan 01, 2005  Gold 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.

Read More
Processing technologies for gold-telluride ores SpringerLink

Feb 12, 2010  Gold 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 tellurides compared to other ...

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Process mineralogy of gold: gold from Telluride-Bearing ores

Gold in the deposit is mostly found. as native gold inclusions (70–75%) in. silicates and sulfi des, particularly pyrite, but approximately 20% of it occurs. as tellurides (calaverite ...

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A WET AND CRUCIB1E-FIRE METHODS - USGS

METHODS OF ASSAY OF GOLD TELLURIDE ORES. [BOLL. 253. through the kindness of Mr. W. M. Bainbridge, of the El Paso Con­ solidated Gold Mining Company, and of Dr. Waldemar Lindgren, of the Geological Survey, the samples were marked 6 and 12 ounces per ton respectively, but they were actually much richer and of nearly

Read More
Mineral Resource of the Month: Tellurium

Jun 13, 2018  Tellurium is currently recovered as a byproduct of nonferrous metal mining, principally from the anode slimes associated with electrolytic refining of copper. In copper ores, tellurium forms stable crystalline compounds (called tellurides) of gold, silver, bismuth, mercury, platinum and palladium that tend to accumulate in residual ore fluids.

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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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Gold Rush Expeditions - Telluride Chief Gold Mine ...

Jan 18, 2017  The Telluride Chief was once a major commercial operation in its time. It utilized substantial mills, of which the foundations still remain. There are severa...

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The reasons of gold refractory, Gold ore classification ...

Nov 28, 2016  4. Telluride and sulfur-salt gold ore. In order to dissociate telluride and sulfur-salt and make the gold’ recovery easier, generally, we use hypochlorite chlorination processing, roasting, and ...

Read More
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.

Read More
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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Lewis Mine Visit Telluride

Hike Through the Mines of Telluride. This scenic hike takes you to the Lewis Mine, a preserved 5-story structure, located beyond Bridal Veil Basin, and to Lewis Lake located in a glacial basin at 12,700 feet above sea level. You will pass remnants of the area's rich mining history, numerous waterfalls, and wildflowers galore!

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Identification of Tellurides

The most satisfactory method of identification of the tellurides is by means of chemical and etch tests on polished sections of ores under the reflecting microscope. The technique and application of this method are fully described by Short. 1 In his systematic scheme of identification the unknown is first treated with standard etch reagents ...

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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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Geology and Mineral Deposits of the Area South of ...

Rich ore has been mined in Bear Creek and the valley of Howard Fork in pre-Tertiary rocks below an altitude of 10,000 feet and as high as 12,400 feet in the volcanic breccias around Gold

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