gold in sulfides

  • Gold in Minerals and the Composition of Native Gold

    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

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  • Sulphide Gold Gekko

    Sulphide Gold Gekko

    Sulphide Gold Recovery. Pre-concentration of coarse 350500 micron sulphide-associated gold ore using the InLine Pressure Jig is required to reject gangue from the high value material. The IPJ a classic pre-concentration device is effective in gangue rejection prior to further processing of valuable gold-bearing material.

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  • Sulfides Selenides and Tellurides rebellious and

    Sulfides Selenides and Tellurides rebellious and

    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 occurs disbursed through a crystal of pyrite.

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  • Synthesis and Characterization of Gold Sulfide

    Synthesis and Characterization of Gold Sulfide

    We report a new synthesis of colloidal gold(I) sulfide nanoparticles by reacting aqueous solutions of sodium sulfide and sodium gold sulfite. Optical absorption spectra and pH were measured during the reaction. The pH changes from 10.3 to 8.8 immediately after mixing the reactants and very slowly decreases during particle growth. The nanoparticles exhibit a continuous increase in absorption as

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  • Sulfide metasomatism and the mobility of gold in the

    Sulfide metasomatism and the mobility of gold in the

    Sep 02 2015 · Gold is one of the least studied of the HSE and as a result its behaviour in the mantle is poorly understood. Gold concentrations in mantle sulfides are below the detection limits of EMP and proton microprobe.

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  • sulfide Definition Classes Formulas  Facts Britannica

    sulfide Definition Classes Formulas Facts Britannica

    Sulfides of many important metallic elements are naturally occurring minerals. For example pyrite which is also called fool s gold owing to its brassy yellow colour is a sulfide of iron with the formula FeS 2.Pyrite is a major source of iron and is one of the most abundant of the sulfur minerals.

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  • Solid solution of gold in sulfides Economic Geology

    Solid solution of gold in sulfides Economic Geology

    With reference to a paper by K. J. Callow and B. W. Worley Jr. on telluride minerals at the Acupan mine in the Phillippines it is pointed out that retention of gold in sulfides after cyanidation is not positive evidence for solid solution as extremely fine particle size may produce the same result.

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  • GoldMine Engineer

    GoldMine Engineer

    This is a complex gold ore with oxide gold in a quartz vein with sulfide gold. The sulfide gold is too fine to see it was probably hydrothermally deposited as a replacement for the iron and pyrites (dark holes) that reduced and oxidized to iron (staining the ore) leaving cavities for gold to enter with the water or steam. (My theory)

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  • Gold(I) sulfideWikipedia

    Gold(I) sulfideWikipedia

    Gold(I) sulfide is the inorganic compound with the formula Au 2 S. It is the principal sulfide of gold decomposes to gold metal and elemental sulfur illustrating the "nobility" of gold.

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  • Sulfide metasomatism and the mobility of gold in the

    Sulfide metasomatism and the mobility of gold in the

    Sep 02 2015 · Gold is one of the least studied of the HSE and as a result its behaviour in the mantle is poorly understood. Gold concentrations in mantle sulfides are below the detection limits of EMP and proton microprobe.

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  • GoldMine Engineer

    GoldMine Engineer

    This is a complex gold ore with oxide gold in a quartz vein with sulfide gold. The sulfide gold is too fine to see it was probably hydrothermally deposited as a replacement for the iron and pyrites (dark holes) that reduced and oxidized to iron (staining the ore) leaving cavities for gold to enter with the water or steam. (My theory)

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  • Rcovery of gold in pyritic oresMine Engineer

    Rcovery of gold in pyritic oresMine Engineer

    information on pyrtiric gold leach . Recovery of Gold in Pyritic Sulfide Ores The now extinct Us Bureau of Mines conducted numerous studies of gold in pyrite and sulfide ores over the years until their untimely demise in the 1990 s.

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  • Sulfides Selenides and Tellurides rebellious and

    Sulfides Selenides and Tellurides rebellious and

    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 occurs disbursed through a crystal of pyrite.

    Get Price
  • SulfidesGold Recovery MethodsICMJ s Mining Journal

    SulfidesGold Recovery MethodsICMJ s Mining Journal

    Sep 04 2015 · It all depends on your sulfide productwhat you have to leach. Leaching works poorly on coarser goldit just takes forever to dissolve. Some types of sulfides react badly with leach systems destroying the leach chemicals. If you have significant silver in your ore many non-cyanide leach systems dont recover silver.

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  • Solid solution of gold in sulfides Economic Geology

    Solid solution of gold in sulfides Economic Geology

    With reference to a paper by K. J. Callow and B. W. Worley Jr. on telluride minerals at the Acupan mine in the Phillippines it is pointed out that retention of gold in sulfides after cyanidation is not positive evidence for solid solution as extremely fine particle size may produce the same result.

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  • Sulfide MineralsThoughtCo

    Sulfide MineralsThoughtCo

    The sulfide minerals represent higher temperatures and a slightly deeper setting than the sulfate minerals which reflect the oxygen-rich environment near the Earth s surface lfides occur as primary accessory minerals in many different igneous rocks and in deep hydrothermal deposits that are closely related to igneous intrusions.

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  • What is Sulfide Mining Mining Action Group

    What is Sulfide Mining Mining Action Group

    Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel gold and copper from a sulfide-rich ore body. Sulfides are a geologic byproduct of mining in this area and by exposing sulfides to the air and water in our atmosphere sulfuric acid can be created — threatening to poison the nearby water

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  • Gold(III) sulfideWikiMili The Free Encyclopedia

    Gold(III) sulfideWikiMili The Free Encyclopedia

    Aug 15 2019 · Gold(III) sulfide is a proposed compound with the formula (Au2S3). Pure samples have not yet been reported. Gold(III) sulfide is not described in textbooks or reviews. It is asserted to result from the reaction of dihydrogen sulfide (H2S) to an ether solution of gold(III) chloride (AuCl3).

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  • Is gold a sulfideAnswers

    Is gold a sulfideAnswers

    Iron Sulfide is FeS meaning that this compound has one iron atom and one sulfur atom. Iron Sulfide is also known as pyrite or fools gold. The gold color is completely natural but it is much

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  • Divining gold in seafloor polymetallic massive sulfide

    Divining gold in seafloor polymetallic massive sulfide

    Jun 29 2019 · Hydrothermal fluids on the modern seafloor are important carriers of base and precious metals in a wide range of volcanic and tectonic settings. The concentrations and distribution especially of gold and silver in associated seafloor massive sulfide (SMS) deposits are strongly influenced by variable source rocks fluid chemistry and precipitation mechanisms. Compositional data of 130 SMS

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  • Small Scale Treatment of PM Sulfide OresGold Refining

    Small Scale Treatment of PM Sulfide OresGold Refining

    Feb 15 2020 · The sulfides contain some galena (lead sulfide) but not enough lead to serve as collector for a full fire assay on that material alone so I will add some other galena from another source (which also contains some good silver but very little gold) and some Litharge (plus a bit of charcoal to help reduce the litharge).

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  • sulfide mineral Definition Examples Identification

    sulfide mineral Definition Examples Identification

    The sulfide deposits formed as a result of the first process include mainly pyrrhotites pyrites pentlandites and chalcopyrites. Most others occur because of the latter process. Weathering may act to concentrate dispersed sulfides. Sulfide minerals are the source of various precious metals most notably gold silver and platinum.

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  • Empire Gold Mining Show Sulfide roastingYouTube

    Empire Gold Mining Show Sulfide roastingYouTube

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    Jan 03 2015 · Here I show how i roast sulfides. Gold Mining Processing Plant Crush Grind Shaker Table Smelting Gold Quartz Ore Gold Nugget MBMMDuration 18 25. mbmmllc 333 129 views

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  • (PDF) Concentrations of invisible gold in the common sulfides

    (PDF) Concentrations of invisible gold in the common sulfides

    AssrRAcr Gold contained in the structure of the common sulfide. minerAls and that present as discrete inclusions smaller than 1000 A are collectively termed "invisible gold" not detec- table by

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  • Smelting and Roasting Ores to recover gold silver and

    Smelting and Roasting Ores to recover gold silver and

    Smelting and Roasting Gold and Silver sulfide Ores to recover values . Smelting and Roasting Gold and Silver Ores. Interested in The processes of smelting or roasting your ore to recover its gold and silver Some fairly rich ores require a lot of work to get all the gold and silver out them. Historically smelting and

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  • What is the color of gold sulfideAnswers

    What is the color of gold sulfideAnswers

    Iron Sulfide is FeS meaning that this compound has one iron atom and one sulfur atom. Iron Sulfide is also known as pyrite or fools gold. The gold color is completely natural but it is much

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  • THE OCCURRENCE OF GOLD IN SULFIDE DEPOSITS OF THE

    THE OCCURRENCE OF GOLD IN SULFIDE DEPOSITS OF THE

    relici sulfide mound the MIR Mound also are gold-rich. Concentrations of gold in MIR sulfides reach 15.5 ppm Au with an average of7.6 ppm and a median value of7.7 ppm (n= l3). These samples are distinctly coarse-grained and show evidence

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  • Black sand pyrite sulfides and goldGold Refining Forum

    Black sand pyrite sulfides and goldGold Refining Forum

    Nov 07 2017 · The alluvial gold no mother lode source has ever been verified. Theres at least two sources unknown for the alluvial gold. The mining been done historically in the area excepting the alluvial recovery has been for the telluride and sulfides and gold recovered from that.

    Small Scale Treatment of PM Sulfide OresFeb 15 2020Black sand pyrite sulfides and goldPage 3Dec 06 2017HCL/peroxide method and black sandJul 01 2012See more results Get Price
  • Sulfide MineralsThoughtCo

    Sulfide MineralsThoughtCo

    The sulfide minerals represent higher temperatures and a slightly deeper setting than the sulfate minerals which reflect the oxygen-rich environment near the Earth s surface lfides occur as primary accessory minerals in many different igneous rocks and in deep hydrothermal deposits that are closely related to igneous intrusions.

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  • The Mineral GallerySulfides Class

    The Mineral GallerySulfides 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 sulfides. 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.

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  • Sulphide Gold Ore Treatment by Leaching and Flotation Process

    Sulphide Gold Ore Treatment by Leaching and Flotation Process

    Problem with gold recovery from sulphide ore How may a mill get the maximum recovery of gold from a sulphide ore at the least capital cost and at the same time obtain the highest net return. This latter point is most important. In many cases a gold mill using an all-cyanide flowsheet with fine grinding of all the ore will report very low gold content in the tailings particularly on an

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  • Gold mobility in the mantle Constraints from sulfides in

    Gold mobility in the mantle Constraints from sulfides in

    Such conditions would also have favored dissolution of gold and associated sulfide and their transfer to the mid-crust in a CO2-H2O fluid the H2O coming from dehydration of amphibolite.

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  • The occurrence of gold in hydrothermal sulfide at

    The occurrence of gold in hydrothermal sulfide at

    Dec 13 2012 · Massive sulfide precipitates found in the Southwest Indian Ridge (SWIR) 49.6°E hydrothermal field are enriched in gold. Here the mineralogy and mineral chemistry of these massive sulfides to constrain the process of gold precipitation were studied. Sulfide samples in this field include lower-temperature Zn-rich sulfides and relative higher-temperature Fe-rich sulfides. Zn-rich sulfides

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  • Volcanogenic Gold in the Massive Sulfide Environment

    Volcanogenic Gold in the Massive Sulfide Environment

    Volcanogenic massive sulfide deposits contain variable amounts of gold from an average production grade of about 1 g/t to more than 10 g/t in some deposits (Fig. 1). They include conventional base metal massive sulfides with accessory gold as well as some deposits in which gold is a primary commodity.

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  • Sulfides  Oxides Hosting High Grade Gold Silver Copper

    Sulfides Oxides Hosting High Grade Gold Silver Copper

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    May 11 2019 · Massive sulfides and oxides pods and veins host high grade minerals like gold silver copper lead. Hundreds of meters of mineralization in oxidized outcrops consisting of chloratic schists

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  • Ascot Intercepts Gold in New Sulfide Zones in Deep

    Ascot Intercepts Gold in New Sulfide Zones in Deep

    Sep 10 2019 · The drill holes intercepted sulfide zones with anomalous gold silver and base metals at the depth indicated by the geophysical data. Highlights of this release include

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