supergene copper leaching

supergene copper leaching

  • SUPERGENE ENRICHMENT PROFILE AT COPPER BASIN

    The supergene copper deposit at Copper Basin is within the Battle Mountain District, Lander County, Nevada, and comprises disseminated pyrite and copper sulfides hosted primarily in clastic sedimentary rock units of the Cambrian age Harmony Formation.

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  • Supergene Enrichment How Natural Processes have

    Any copper contained within the rock is dissolved by these acidic solutions, which percolate downward to the water table, where they encounter reducing conditions that allow the copper to precipitate out as chalcocite (a copper bearing sulfide). Over time this action forms a thick, copper rich, blanket shaped zone, known as an enrichment blanket.

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  • Cu Leaching Using Regenerated Ferric Sulphate sgs

    LEACHING OF SECONDARY COPPER MINERALS USING . REGENERATED FERRIC SULPHATE. C.J. FERRON SGS. ABSTRACT . Secondary copper minerals such as chalcocite (Cu. 2. S) and covellite (CuS) are known to dissolve in acidic ferric sulphate solutions. However, the quantities of ferric sulphate required to achieve acceptable recoveries for

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  • Topic 9 supergene enrichment slideshare

    Nov 22, 20150183;32;Formation of Copper Oxides Copper ore bodies have been subjected to weathering at or near the surface of the Earth after eons of erosion removed overlying rocks. Oxygenated groundwater, derived from rainwater, trickles through fractures in the rock and forms a leaching zone where chalcopyrite, a primary sulfide mineral, is dissolved and

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  • Panoro Reports Positive Preliminary Economic Assessment

    The copper stripped solution generated in the SX plant (raffinate) will be conditioned with sulfuric acid and fresh water and then recycled to the heap leaching operation to irrigate more

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  • Leaching Supergene Copper Ore Atacamite amp; Chrysocolla

    The US Bureau of Mines, as part of its in situ mining research, is conducting laboratory leaching experiments on core specimens of selected supergene copper ores. The objective is to document the mineralogical and geochemical changes that occur during in situ mining of oxide copper

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  • Leached caps mineralogy and geochemistry as supergene

    Elements that subsequently concentrate in the oxidized or supergene enrichment zone are derived from a volume of rocks that have undergone oxidation, leaching and metal removal, whether referred to as the leached cap developed from disseminated and fracture controlled sulfides such as PCDs (Locke, 1925) or gossan developed from massive sulfide bodies, including volcanogenic massive or skarn hosted

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  • Origins of Chalcocite Defined by Copper Isotope Values

    In the case of oxidative reactions, the weathering of copper sulfide in supergene enrichment environments has been studied in the greatest detail. Solutions that leach copper during oxidation from the copper sulfide mineral become enriched in the 65 Cu

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  • Mineralogical profile of supergene sulfide ore in the

    The supergene copper sulfides occur in three main textures partial to complete replacement of chalcopyrite, partial replacement of pyrite, and partial to complete replacement of one another. Compositions of copper sulfides vary widely, but (Cu254;Fe)S ratios of 1.80 6 0.05, 1.92 6 0.03, and 1.10 6 0.10 are dominant.

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  • Copper extraction

    Leaching Supergene Copper Ore Atacamite amp; Chrysocolla Methods. A wide variety of initial acid strengths were used in these experiments. Leaching Atacamite Mineralization. Leach solutions recovered from atacamite mineralization are Acid consumption independent of acid concentration. Leaching

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  • Recovery of Copper by Solution Mining Methods AZ

    Recovery of Copper by Solution Mining Methods 3 Supplementing production from conventional heap leach operation, the in place rubble leaching project at Silver Bell is estimated to recover 20 to 25% of the contained copper. The relatively low recovery achieved by this method is most likely due to the presence of insoluble hypogene

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  • Kinetics of chalcocite leaching in oxygenated alkaline

    media are used for the leaching of copper from its ores (Baba et al., 2014). However, ore derived from supergene domains often contain acid consuming gangue such as carbonates and acid reactive silicates. Acid leaching also enhances the dissolution of impurity elements such as iron whose presence poses challenges to the downstream processes

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  • Rocklands Copper Cobalt Gold Deposits, Cloncurry Geology

    Leaching, deep oxidation and supergene enrichment of copper has resulted in some very high grade zones with spectacular development of native copper and chalcocite accompanied by higher gold grades. Keywords Copper, Cobalt, Gold, Native Copper, Supergene, Dilatant Structures, Hydrothermal Breccia, IOCG

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  • MINERALOGICAL PROFILE OF SUPERGENE SULFIDE ORE IN

    patterns of supergene copper sulfide minerals observed at Morenci are similar to those observed in other supergene enrichment blankets of porphyry copper systems worldwide and are even more similar to compositions seen in leaching experiments of synthetic copper and copper iron sulfides.

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  • Mining Plan Summary South American Copper

    An outside private company has estimated that only the A1 Lens Supergene resource contains 75 million pounds of copper at 3.13% copper, 17,000 ounces of gold at 0.49 g/t and 287,000 ounces of

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  • THE EVOLUTION OF SUPERGENE ENRICHMENT IN THE

    THE EVOLUTION OF SUPERGENE ENRICHMENT IN THE MORENCI PORPHYRY COPPER DEPOSIT, GREENLEE COUNTY, ARIZONA by Merritt Stephen Enders A Dissertation Submitted to the Faculty of the DEPARTMENT OF GEOSCIENCES In Partial Fulfillment of the Requirements For the Degree of DOCTOR OF PHILOSOPHY In the Graduate College THE UNIVERSITY OF ARIZONA

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  • University of Nevada, Reno Tectonic Controls, Timing and

    conditions during supergene enrichment, thorough copper leaching, and strong enrichment. In contrast, the reactive potassic alteration assemblage and lower content of acid producing hypogene sulfides in the southwestern part of the district resulted in weak leaching and poor enrichment.

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  • Bioleaching

    The most efficient minerals are supergene minerals such as chalcocite, Cu 2 S and covellite, CuS. The main copper mineral chalcopyrite (CuFeS 2) is not leached very efficiently, which is

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  • Topic 9 supergene enrichment slideshare

    Nov 22, 20150183;32;Definition Secondary or supergene enrichment where leaching of materials occurs and precipitation at depth produces higher concentrations. Kinds from Concentrating minerals by chemical weathering processes. Residual Mineral Deposits An existing mineral deposit can be turned in to a more highly concentrated mineral deposit by weathering in a process. Remarkable special case of

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  • ore rod supergene interimnetwerkamsterdam.nl

    mixed ore contains oxide, supergene oxide, and hypogene sulphide copper species, with the greater part of the deposit being made up of sulphide and mixed ores. The oxide ore has length of 297 mm, and was charged with 20 mild steel rods of three diameters, viz. six 16 mm, eight 20 mm, and six

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  • 12. Supergene Ore and Gangue Characteristics

    significant copper enrichment at the reactive redox boundary between massive sulfide protore and downward penetrating fluids. The supergene enrichment blanket is overlain by an intensely altered and leached Fe oxide rich gossan (the remains of the original massive sulfide) that extends upward to

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  • Heap Leaching an overview ScienceDirect Topics

    Most copper leaching is done by piling broken ore (0.5% Cu) into flat surface, 310m high, 10 4 10 5 m 2 heaps of ore and then sprinkling dilute sulfuric acid lixiviant on to the heap surface.

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  • Topic 9 Supergene Enrichment researchgate

    Definition from Guilbert and Park, 1985 Supergene enrichment occurs when oxidizing acids dissolve metal ions from the protore and re deposits it in more reducing, basic areas, i.e. below the

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  • Panoro Reports Positive Preliminary Economic Assessment

    Of the 118.7 million tonnes of leach material mined from the open pit, 117.1 million tonnes is classified as supergene enriched material with the balance of the 1.6 million tonnes being classified as overburden, leach cap or primary sulphides.

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  • Copper recovery using leach/solvent extraction

    Copper recovery using leach/solvent extraction/electrowinning technology 65 (Figure 2) and a catalytic amount of LIX 63, was introduced in 19657 and in March 1968 the first commercial copper L/SX/EW operation, the Bluebird plan of Ranchers

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  • Leaching Characteristics of Selected Supergene Copper Ores

    Leaching Characteristics of Selected Supergene Copper Ores. In this instance, ignoring water, there has been a 12.8% decrease in the mass of the sericite per unit volume due to leaching of silica, aluminum, and potassium. The calculation reveals that there has been a net increase in the amount of iron in the sericite.

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  • Supergene (geology)

    Supergene processes include the predominance of meteoric water circulation with concomitant oxidation and chemical weathering. The descending meteoric waters oxidize the primary sulfide ore minerals and redistribute the metallic ore elements. Supergene enrichment occurs at the base of the oxidized portion of an ore deposit. Metals that have been leached from the oxidized ore are carried downward by percolating groundwater, and react with hypogene sulfides at the supergene hypogene

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  • Cu Leaching Using Regenerated Ferric Sulphate sgs

    LEACHING OF SECONDARY COPPER MINERALS USING . REGENERATED FERRIC SULPHATE. C.J. FERRON SGS. ABSTRACT . Secondary copper minerals such as chalcocite (Cu. 2. S) and covellite (CuS) are known to dissolve in acidic ferric sulphate solutions. However, the quantities of ferric sulphate required to achieve acceptable recoveries for

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  • (PDF) Supergene Enrichment researchgate

    Weathering Processes and Supergene ore Deposits Conditions that Influence Supergene Enrichment Ideal Starting Material Zones Morphology of Zoning Gossans and Cappings Oxidation and Solution in

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  • ore rod supergene interimnetwerkamsterdam.nl

    5.4 Nanoparticulate Gold and Copper in Supergene Deposits Supergene Au and Cu deposits occur in many regions of the world, particularly regions that have been subject to significant, long term 150 Noble Metal Nanoparticles in Ore Systems weathering such as Australia, South America, Africa and Asia.

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  • 200102 Case Study Fines Control to improve copper leaching

    The Situation. Andacollo was experiencing problems with fines materials on their leach pads. The fines materials (lt;100 Ty) can reach up to 13% in the stockpile after the tertiary crusher. Fines significantly affect copper recovery in leach pads 177; 1% fines = 177; 1.5% Cu recovery (Actual recovery 70%).

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  • Mineralogical and metallurgical study of supergene ores of

    Gold is present as auricupride and electrum and copper exists as conichalcite (CaCu arsenate), native Cu, cuprite, chrysocolla, and minor malachite, with locally significant copper in

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  • Ore deposits formed by oxidation and supergene enrichment

    Ore Deposits Formed by Oxidation and Supergene Enrichment. 183; An orebody thus becomes oxidized and generally leached of many of its valuable materials down to the groundwater table, or to depth where oxidation cannot take place. 183; The effects oxidation may, however, extend far below the one of oxidation.

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  • Heap Leaching an overview ScienceDirect Topics

    Most copper leaching is done by piling broken ore (0.5% Cu) into flat surface, 310m high, 10 4 10 5 m 2 heaps of ore and then sprinkling dilute sulfuric acid lixiviant on to the heap surface.

    Get Price
  • Copper Ore Types Sulfides vs. Oxides INN

    Some supergene sulfide deposits can be leached using a bacterial oxidation heap leach process to oxidize the sulfides to sulfuric acid. That also allows for simultaneous leaching with sulfuric

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  • Composition, formation, and leaching behaviour of

    From the supergene ore of the polymetallic Sanyati deposit in north western Zimbabwe copper is won in a heap leaching solvent extraction electrowinning (HL SX EW) process. However, the copper recovery is below expectations. Therefore, the composition, formation, and leaching behaviour of the supergene ore was studied using mineralogical

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  • Supergene Oxidation of Copper Deposits Zoning and

    Copper oxides represent an attractive exploration target because even low grade prospects have the potential to produce low cost copper in an environmentally friendly fashion. Derived from hypogene and/or supergene suldes, copper oxides comprise a series of distinct assemblages that characterize a variable pH, oxidizing geochemical

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  • Major Mines amp; Projects Quebrada Blanca Mine

    Sulphuric acid leaching of ore is accomplished with a system of drip emitters placed on top of the leach pads. The pregnant leach solution (PLS) exiting the leach pads is stored in a pond prior to being sent to the SX/EW plant. The PLS is mixed with organic and diluent to

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