gold selenide ores

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Gold(au) Recovered As Free Metal Patents and Patent ,

Abstract: In a method for leaching gold from copper sulfides, the sulfide ores are first subjected to leaching of copper, thereby producing a leaching residue having 79% or less of the copper content This leaching residue is mixed with a leach liquor, which contains the chloride ion and ferric ion and has 19 or less of pH Gold and copper can be effectively leached from the copper sulfide or...

Gold in Minerals and the Composition of Native Gold

GOLD IN MINERALS AND THE COMPOSITION OF NATIVE GOLD By ROBERT S JONES and MICHAEL FLEISCHER ABSTRACT Gold occurs in nature mainly as the metal and as various alloys It forms complete series of solid solu­ tions with silver, copper, nickel, palladium, and...

The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals Most major ores of important metals such as copper, lead and silver are sulfid Strong generalities exist in this class The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin...

Roasting and Refractory Gold Ore - MGS Precious Metals Blog

Jul 16, 2014· As we have discussed previously on this blog, gold cyanidation can be a very effective means of extracting gold from mined ore However, the process is ineffective for refractory gold ores – which are made up of sulfide minerals that block the cyanide solution from leaching the gold out of the ore...

Epithermal Gold-Silver Deposits in Western Java, Indonesia ,

Te- and 80 Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization (ET Yuningsih et al) Se-bearing epithermal Au-Ag mineralization, eralogic, fluid inclusion microthermometric Prasolovskoye, Kunashir Island, Kuril Island and ,...

gold telluride ores - educationcarein

Abstract: Gold telluride ores are important gold refractory ores due to the presence of , and main physical properties of gold telluride ores were described, and, More details » Get Price , Understanding gold-(silver)-telluride-(selenide) mineral , - Episod...

General Types of Gold Deposits - Minelinks

Gold is a trace constituent of many plants and animals Some coals are slightly enriched in gold, with 005 to 01 ppm Au in the ash AURIFEROUS DEPOSITS Gold is won from deposits mined essentially for the metal and as a by-product of the mining and treatment of nickel, copper, zinc, lead, and silver or...

Geochemistry of gold and selenium in hydrothermal ore ,

Abstract: Field observations, theoretical calculations and laboratory measurements were used to determine why selenide minerals are less common in ore deposits than sulfide and telluride minerals, where gold is located mineralogically in Carlin-type gold deposits (CTDs), and how much gold enters bornite and chalcopyrite under conditions typical of porphyry copper deposits...

Amalgamation Of Gold Ores & Chloritizing Roasting

The following minerals could be plainly seen in the ore: magne­tite, pyrites of iron, pyrites of copper, quartz, and garnet Neither galena nor zinc-blende were visible, but the ore contained a trace of lead, and in some samples of ore from the Muertos mine, 119 per cent, of zinc was found...

Precious and base metal selenide mineralization at Hope's ,

trend of the selenide-bearing vein first discovered It cannot be confirmed that it is the same vein, however, since it is not possible to trace it in the overlying thin-bedded shale limestone Mineralogy The gangue mineralogy of the selenide vein dif- fers little from that of the other gold-bearing veins...

#79 - Gold - Au

Gold selenide (AuSe) Gold sulphide (Au 2 S) Interesting facts: It is found in copper ores and from the curst of the earth It is the most malleable and ductile metal Indians believe that a wedding without gold isn't a wedding Common Uses: A radioactive isotope of gold (gold-198) is used for treating cancer Gold sodium thiosulfate (AuNa 3 O 6 ....

minerals associated with gold - africar-hirecoza

Selenides, gold selenide, AuSe, +2 digold triselenide Get Now Gold and associated minerals in the Waikaia placer gold mine The Waikaia alluvial gold mine is hosted in a Pleistocene paleochannel that is buried beneath younger sediments beside the Waikaia River The paleochannel , Photos of gold ores, quartz, telluride gold ore and gold ....

EXTRACTING METALS FROM SULFIDE ORES - InvestorsHub

Biochemical leaching is now a well-established commercial process for treating gold ores in which the gold is enclosed within sulfide minerals Biochemical oxidation of the sulfide minerals releases the gold and allows it to be leached by the chemicals used in conventional gold leaching...

Gold chalcogenides - Wikipedia

Gold chalcogenides are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium, or tellurium Gold(III) oxide, Au 2 O 3 Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the [Au(OH) 4] − ion...

Understanding gold-(silver)-telluride-(selenide ,

Gold-(silver)-telluride (selenide) ores occur as epithermal orogenic and intrusion related deposits Although Te and Se are chalcophile elements and share geochemical affinity with Au, formation of selenides and other elements Ag-Au require acidic or reducing environments...

Developments in the pretreatment of refractory gold ,

Gold ores are classified as highly refractory when at least 80% of the gold cannot be extracted by conventional cyanidation leaching even after fine grinding A very common cause of refractoriness is the dissemination of fine grained or submicroscopic gold inclusions within sulphide minerals such as arsenopyrite and pyrite Such ores require a pre-...

TELLURIDE AND SELENIDE MINERALS IN GOLD DEPOSITS – A ,

telluride and selenide minerals in gold deposits – a half-term report for igcp-486 Conference Paper (PDF Available) August 2006 with 364 Reads Conference: IAGOD-2006, At Moscow, Russia...

Silver(I) selenide - Revolvy

Apr 29, 2005· Silver(I) selenide topic Silver selenide (AgSe) is the reaction product formed when selenium toning analog silver gelatine photo papers in photographic print toning The selenium toner contains sodium selenite (NaSeO) as one of its active ingredients, which is the source of the selenide (Se ) anion combining with the silver in the toning process...

The Chemistry of Cyanide-Metal Complexes in Relation to ,

The formation of gold and silver sulphides does not affect the stability region of aurocyanide and silver-cyanide complex Gold and silver telluride and selenide are stable in the presence of cyanide These results suggest that direct leaching of gold and silver tellurides and selenides with ,...

Rcovery of gold in pyritic ores - Mine EngineerCom

Sulfide ores, and pyrites in particular, have caused and continue to cause difficulty in recovering the gold values from these or In most instances, visible gold can not be seen under microscopic examination of pyrite gold or However, if the ore is ground to -200 mesh, most times, a few specs of gold can be visibly seen under microscopic ....

Does this gold compounds can found in natural gold ore or ,

Feb 20, 2008· Best Answer: ranu, Most of the compounds you list cannot be found naturally, with the exception of the sulfides, selenides, and tellurid These occur as minerals in gold or Besides these, natural gold is usually in its pure, elemental form The other ,...

EXTRACTING METALS FROM SULFIDE ORES - InvestorsHub

Biochemical leaching is now a well-established commercial process for treating gold ores in which the gold is enclosed within sulfide minerals Biochemical oxidation of the sulfide minerals releases the gold and allows it to be leached by the chemicals used in conventional gold leaching...

Epithermal Gold-Silver Deposits in Western Java, Indonesia ,

Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization DOI: 1017014/ijogv1i2180 The gold-silver ores of western Java reflect a major metallogenic event during the Miocene-Pliocene and Pliocene ag...

The Chemistry of Cyanide-Metal Complexes in Relation to ,

The formation of gold and silver sulphides does not affect the stability region of aurocyanide and silver-cyanide complex Gold and silver telluride and selenide are stable in the presence of cyanide These results suggest that direct leaching of gold and silver tellurides and selenides with ,...

Recovery of platinum group metals from oxide ores—TML ,

The Great Dyke, Zimbabwe, contains over 800 million ounces of platinum and approximately 20 million ounces of rhodium However, about 10% of the ore is oxidized and cannot be processed with current recovery methods A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide or...

Selenide minerals - Revolvy

Oct 24, 2016· Selenide minerals are those minerals that have the selenide anion as a main component Selenides are similar to sulfides and often grouped with them Examples include: achavalite FeSe athabascaite CuSe clausthalite PbSe ferroselite FeSe penroseite (Ni,Co,Cu)Se stilleite ZnSe tiemannite HgSe umangite CuSe References Mindat Strunz Classification Selenide minerals are ,...

PROCESS MINERALOGY OF SILVER AND GOLD AT KIDD CREEK, ,

PROCESS MINERALOGY OF SILVER AND GOLD AT KIDD CREEK, FROM ORE TO ANODE SLIME J D Scott Kidd Creek Mines Ltd, A Falconbridge Group Company, B O X 2002, Timmins, Ontario, Canada P4N 7K1 ABSTRACT The Kidd Creek mine orebody contains considerable silver, about 25% of which is in solid solution in the chalcopyrite...

Gold Chlorides: Naturally Concentrating the King of Metals

Gold is the most malleable (can be hammered into thin sheets) and ductile (can be drawn into thin threads) of all metals A single gram of gold can be beaten into a sheet of a square meter As a good conductor of electricity, gold is critically important in the current age of electronics Many medical instruments make use of gold parts, too...

Rebellious Ores: Sulfides, Selenides and Tellurides

Well, sulfides, selenides and tellurides are simply minerals which contain sulfur, selenium, and tellurium combined with some metal Unusually this is the metal we are interested in, but sometimes other valuable metals can be mixed in as trace elements An example of this is when gold ,...

Recovery of platinum group metals from oxide ores—TML ,

The Great Dyke, Zimbabwe, contains over 800 million ounces of platinum and approximately 20 million ounces of rhodium However, about 10% of the ore is oxidized and cannot be processed with current recovery methods A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide or...