ore bodies oxidized

  • (PDF) Oxidized and reduced mineral assemblages in ...

    Oxidized and reduced mineral assemblages in greenstone belt rocks of the St. Ives gold camp, Western Australia: Vectors to high-grade ore bodies in Archaean gold deposits? March 2008 Mineralium ...

  • Uranium Ore Minerals - Dangerous Laboratories

    1 U 3 0 8 is the symbol for a chemical compound, uranium oxide, composed of three atoms of uranium to eight atoms of oxygen. Most chemical assays for uranium are expressed in terms of U 3 0 8, and ore purchases are made on that basis.The uranium content equals approximately 85 per cent of the assay expressed in terms of U 3 0 8. 2 Hardness of minerals is related to Moh's

  • Photos of Natural Silver Ore, Silver minerals, Crystal ...

    Oxidation zones frequently cap the ore bodies, and downward secondary enrichment has probably occurred in many cases. Silver-lead ores form a widely distributed class in the Cordilleran region of the United States and supply most of the lead mined in this country.

  • PreKlondikean oxidation prepared the ground for Broken ...

    sociated with the ore (McClung et al., 2007; Rozendaal et al., 2017). The Black Mountain and the Broken Hill deposits each consist of two separate ore-bodies, an upper and a lower one. The upper ore-bodies share the same stratigraphic position with close spa-tial association with a folded quartz-magnetite rock (Rozendaal et al., 2017).

  • Oxidation and Reduction in Geochemistry | The Journal of ...

    Motoaki Sato Persistency-field Eh-pH diagrams for sulfides and their application to supergene oxidation and enrichment of sulfide ore bodies, Geochimica et Cosmochimica Acta 56, no.8 8 (Aug 1992): 31333156.

  • Supergene Enrichment - How Natural Processes have ...

    the phyllic zone, the primary (hypogene) ore body contains chalcopyrite, bornite, and molybdenite (minor) with minor to moderate amounts of pyrite. Located near the surface, the leached cap and enrichment blanket are features that form as a result of the oxidation and weathering of the sulfide-bearing minerals contained within a porphyry copper ...

  • Zinc processing - Ores | Britannica

    Zinc ores are recovered by many mining techniques, ranging from open-pit mining (mainly in the case of oxidized ore bodies, which are located closer to Earths surface) to the normal underground methods (used for the more deeply located sulfide ores). The most common underground method of ore extraction is cut-and-fill stoping, in which ...

  • Uranium Ore Minerals - Dangerous Laboratories

    1 U 3 0 8 is the symbol for a chemical compound, uranium oxide, composed of three atoms of uranium to eight atoms of oxygen. Most chemical assays for uranium are expressed in terms of U 3 0 8, and ore purchases are made on that basis.The uranium content equals approximately 85 per cent of the assay expressed in terms of U 3 0 8. 2 Hardness of minerals is related to Moh's

  • THE STORY OF THE BAGDAD MINE - Arizona

    The ore-body was relatively thin for block-caving and so requir­ ... total, however, a very considerable amount of the copper is in the oxidized zone. The secondar.y sulphide zone consists of veinlets of pyrite and chalcopyrite partially replaced by chalcocite. The copper content of the enriched sulphide

  • Copper Ore Types: Sulfides vs. Oxides | An Investor's ...

    Nov 09, 2020· Copper-containing rock, or copper ore, holds only a small percentage of copper. Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore of ...

  • Ore Body - an overview | ScienceDirect Topics

    S.M. Gandhi, B.C. Sarkar, in Essentials of Mineral Exploration and Evaluation, 2016 2.5 Ore Body. Generally, an ore body is an accumulation of a solid and fairly continuous mass of ore with gangue, distinctly distinguishable by form and character from the enclosing host rocks. An ore deposit might include single or several ore bodies. The ore bodies are distinguished by their shape: (1 ...

  • Concentration of oxidized lead ores

    The most common oxidized ore of lead is cerrusite. Then follow in order the sulphate, molybdate, and chlorophosphate* This "Carbonate* ore in many cases is high grade due to the natural concentration by weathering ... but more often in irregular bodies. The silver is close­

  • Secondary Enrichment of Ore Deposits . S. F. Emmons ...

    In the exploitation of ore bodies it has been found that many deposits decrease in richness as depth increases. The explanations have been various. That the phenomenon is a far more general one ... vein-materials in oxidized form, producing in one place an enrich- ment, and in another possibly an impoverishment of the original

  • The Effects of Oxidation on Copper | Sciencing

    Apr 17, 2018· Copper is a versatile metal used in thousands of everyday products. It oxidizes readily to form a distinctive coating known as patina. The patina gives the Statue of Liberty its characteristic appearance, but the oxidation of copper can also cause undesirable effects under some circumstances.

  • CONTACT INFORMATION Mining Records Curator Arizona ...

    Irregular, oxidized pipe and chimney ore­ bodies of manganiferous silver along "north­ east" fissure zones in Pennsylvanian-Per­ mian Naco Group limestone near intersec­ tions with the Lucky Cuss Fault. Irregular, extensively oxidized, tabular to chimney-like orebodies, mostly manganif­

  • Mine Tales: San Manuel was world's largest underground ...

    The upper part of the ore body is in the oxidized zone, mainly coatings and stringers of blue chrysocolla and also red colored cuprite averaging 0.717% copper content.

  • Copper Ore Types: Sulfides versus Oxides | Nasdaq

    Apr 23, 2011· Oxidized copper ore bodies may be treated several ways, with hydrometallurgical processes used to treat oxide ores dominated by soluble minerals such as copper carbonate minerals. These oxide ores...

  • Ore Body Assessment - Nexus Bonum

    Ore Body Assessment. Specific geological characteristics are identified and then utilised, through the integration of smart technology, to develop sustainable projects with attractive economics! Outcrop Scale. Hand specimen scale. Each ore body is unique and therefore characterising the ore is the first step to defining how best to process it.

  • Ore minerals

    Copper - Most copper ore bodies are mined from minerals created by weathering of the primary copper ore mineral chalcopyrite. Minerals in the enriched zone include chalcocite, bornite, djurleite. Minerals in the oxidized zones include malachite, azurite, chyrsocolla, cuprite, tenorite, native copper and

  • Redox-induced spontaneous polarization as a cause of large ...

    ore itself is evidenced by (i) the continued presence of the ore and (ii) by the presence of an SP phenomenon. If the groundwater at depth were more oxidizing than the ore, the entire ore body would oxidize whereas if it has an oxidation potential equal to that of the ore, the ore would oxidize locally in its upper part.

  • Uranium Ore Minerals - Dangerous Laboratories

    1 U 3 0 8 is the symbol for a chemical compound, uranium oxide, composed of three atoms of uranium to eight atoms of oxygen. Most chemical assays for uranium are expressed in terms of U 3 0 8, and ore purchases are made on that basis.The uranium content equals approximately 85 per cent of the assay expressed in terms of U 3 0 8. 2 Hardness of minerals is related to Moh's scale of 1 to 10 using ...

  • Oxidation of sulfide ore bodies; 1, Geochemical ...

    Oxidation of sulfide ore bodies; 1, Geochemical environments in terms of Eh and pH Motoaki Sato. Motoaki Sato Search for other works by this author on: ... iron, silver, and zinc sulfides in aqueous solutions are discussed and a procedure outlined for identifying first-step oxidation or reduction reactions of sulfide minerals. This content is ...

  • Cochise County Arizona Gold Production Western Mining ...

    The ore bodies are pyritic replacement deposits in limestone, shale, and porphyry along thrust faults. Some of the deposits are oxidized and consist of masses of iron and copper oxides containing cavities lined with chrysocolla, malachite, and azurite.

  • Gold Skarns - British Columbia

    Ore bodies in the oxidized Au skarns tend to lie more proximal to the intrusions. GENETIC MODEL: Many Au skarns are related to plutons formed during oceanic plate subduction. There is a worldwide spatial, temporal and genetic association between porphyry Cu

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

    The mining district of Austin, in central Nevada was well known for its silver ores, but this specimen of oxidized ore also contains a considerable amount of gold in addition to the silver. It shows few sulfide minerals because it is well oxidized. ... Character of Gold Ore Bodies: A very common occurrence of gold ore is in true fissure veins ...

  • Electrochemistry Encyclopedia -- Extracting metals from ...

    Thus, ore-bodies, when exposed to weathering processes, develop a zonal arrangement of different mineral associations, which reflect different degrees of oxidation. Oxygen dissolves in the ground water from the air and diffuses to metal sulfide surfaces where it can be reduced.

  • Geology and ore deposits of the Pioche district, Nevada

    The ore " beds " above water level in the Prince mine are thoroughly oxidized and consist of manganese-iron oxides low in silver, lead, and zinc. About 800,000 tons of ore carrying 2.5 to 3 ounces of silver to the ton, 3 per cent of lead, 35 per cent of iron, and

  • Oxidized and reduced mineral assemblages in greenstone ...

    Dec 12, 2007· Note that the S isotopes indicate spatially a redox change from oxidized (negative δ 34 S) to reduced (positive δ 34 S) in the ore fluid exactly where sulfide-oxide mineral mapping indicates a redox change in the broad scale fluid flow. High-grade (>100 g/t Au) gold intersections are located proximal to the domain boundary of reduced and ...

  • ALTA Gold 2012 E-Doc - Home | Albion Process

    oxidation, bio oxidation and roasting, for specific ores bodies (1-4). More recent technologies such as ... It is essential that the ore body be defined and characterised in terms of mineralogical composition and deportment of gold and silver to allow for

  • Oxidation supergene enrichment - SlideShare

    Nov 03, 2014· Process Occurring When ore deposits are exposed to the oxidation zone they are weathered and altered with the country rocks. The surface waters oxidize many ore minerals and yield solvents that dissolve other minerals. An ore body thus becomes oxidized and generally leached of many of its valuable materials down to the groundwater table, or to ...

  • Mining and Extraction: Oxide Ores - processes for ...

    Crushed ore in the leach pad. The pregnant leach pond is in the distance. The crushed ore rests on a leak-proof membrane to protect the underlying ground and prevent the acid and copper ions polluting the local water table. 2. Dilute sulfuric acid is poured over the crushed ore

  • Photos of Natural Silver Ore, Silver minerals, Crystal ...

    whole present a variety of forms, the ore having been deposited either by fissure vein cavity filling or replacement, or both. Most of the important occurrences seem to have been formed at intermediate depths. Oxidation zones frequently cap the ore bodies,

  • (PDF) Oxidized and reduced mineral assemblages in ...

    Oxidized and reduced mineral assemblages in greenstone belt rocks of the St. Ives gold camp, Western Australia: vectors to high-grade ore bodies in Archaean gold

  • Ore minerals

    Copper - Most copper ore bodies are mined from minerals created by weathering of the primary copper ore mineral chalcopyrite. Minerals in the enriched zone include chalcocite, bornite, djurleite. Minerals in the oxidized zones include malachite, azurite, chyrsocolla, cuprite, tenorite, native copper and brochantite.

  • Oxidized zone minerals | Wat on Earth | University of Waterloo

    Below: Cross section of an oxidized sulphide deposit. Original sulphide sources of mineralization. Black Smokers. In order for an oxidized deposit to be formed, an original sulphide ore body must be present. The sulphide ore body may be

  • Ore deposits formed by oxidation and supergene enrichment

    � The oxidized or near-surface part of an orebody is made colorful due to the oxidation of sulfides to oxides and sulfates. � As the down trickling solutions penetrate the water table, their metallic content may be precipitated in the form of secondary sulfides to give rise to a zone of secondary or supergene sulfide enrichment.

  • Application of hyperspectral remote sensing for ...

    Jan 11, 2021· The main ore body, consisting of PbZn oxidized ore bodies with a FeMn cap (G), is clearly shown in the figure, corresponding to

  • Sulphide Gold Ore Treatment by Leaching and Flotation Process

    Apr 18, 2016· 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 ...

  • Copper/gold mine. Flotation help with oxidized ore ...

    Our pit right now is in a big batch of oxidized ore, there trying to split feed wither another cleaner ore body. Our cleaner recovery is always good, its just our rougher recovery always drops about 5-8 percent when we get into this oxidized ore. I have tried running the roughers deeper, shallower, less air more frother, more air less frother.

  • Oxidized Copper Ore

    Ore bodies will have a layer of chalcocite which corresponds to the present or a past water table level and this layer is called a "chalcocite blanket". the chalcocite blanket is richer in copper than the upper oxidized portion of the ore body and usually richer than the primary unaltered ores below.

  • Mining and Extraction: Oxide Ores - processes for ...

    Crushed ore in the leach pad. The pregnant leach pond is in the distance. The crushed ore rests on a leak-proof membrane to protect the underlying ground and prevent the acid and copper ions polluting the local water table. 2. Dilute sulfuric acid is poured over the crushed ore using an irrigation system. (Courtesy of Red Tiger Mining Inc.)

  • Distribution of gold and silver and other ore-related ...

    Distribution of gold and silver and other ore-related elements near ore bodies in the oxidized zone at Goldfield, Nevada Open-File Report 73-11 By: Roger P. Ashley and John Patrick Albers

  • Pressure Oxidation Circuit

    Jan 31, 2018· The oxidation circuit consists of one autoclave, two stages of slurry heating, and two stages of flash cooling. The autoclave was designed to operate at 180°C (356°F) with a slurry residence time of 48 minutes. Design criteria calls for 75% sulfide oxidation through the circuit. Gold is leached and recovered from the oxidized slurry in a six ...

  • Distribution of gold and other ore-related elements near ...

    Distribution of gold and other ore-related elements near ore bodies in the oxidized zone at Goldfield, Nevada Professional Paper 843-A By: Roger P. Ashley and John Patrick Albers

  • What is oxidation? - ZME Science

    Jan 28, 2021· What is oxidation. Oxidation is the process in which one atom strips electrons from another, claiming them for its own. It is one side of redox type reactions.