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2011-4-23 · Copper-containing rock hosts only a small percentage of copper. Most of the rock is unwanted material, typically referred to as gangue. Depending on to what minerals the copper …
2011-5-30 · accumulations associated with weathering of copper sulfide deposits, with emphasis on minerals that occur in the supergene oxide zones of porphyry copper and skarn ore deposits.“Copper oxides” are defined as those copper minerals containing oxidized anions, especially copper oxides, sensu strictu, sulfates, phosphates, carbonates, and ...
ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the ...
The common route for turning copper sulfide ores into metal is high temperature oxidation of sulfides to produce an impure liquid copper. This is cast into slab-like anodes. Principal impurities are iron and precious metals (gold and silver). The anodes are electrolytically refined in cells sketched in Fig. 8.There is a resemblance to the cell of Fig. 7.
English examples for "sulfide ore" - Two of the above-mentioned mines were free milling and two produced sulfide ore. They are also used for roasting a wide variety of sulfide ores prior to metal extraction. It has been described as "the single most important operation used for the recovery and upgrading of sulfide ores".
The minerals that make up the sulfide class are composed of metal cations (+2 charge) combined with sulfur. The sulfides form an important group of minerals which includes the majority of the ore minerals for iron, copper, nickel, lead, cobalt, zinc, and silver.
2019-9-8 · About This Quiz & Worksheet. Complete the worksheet and quiz to gauge your understanding of sulfide minerals. The meaning of a sulfide and why sulfides are economically valuable are topics you ...
Cinnabar - This bright red mineral crystallizes around hot springs or hydrothermal veins. It contains up to 85% mercury and is the worlds primary source of the element. Mercury: Galena is a coumpound of sulfur and lead. It contains about 10% lead. Lead: Calcocite is the richest of copper ores containing about 80% copper. It is a rare mineral and most of the known deposits have been mined out.
2018-10-23 · chlorite-Cu-Fe-sulfide replacement of wall rock slivers within veins and clasts within shear zones, potassic alteration of the surrounding wall rock, and significant remobilization of early diagenetic disseminated copper sulfide minerals. Sulfur isotopic analyses indicate copper sulfides were probably both mechanically and chemically remobilized.
2019-5-28 · Copper Ore Types: Sulfides vs. Oxides. ... Copper sulfide ores are typically ... These copper oxide ores are usually leached using sulfuric acid to liberate the copper minerals into a solution of ...
Volume 61: Sulfide Mineralogy and Geochemistry David J. Vaughan, editor 2006 i-xiii + 714 pages. ISBN 0-939950-73-1; ISBN13 978-0-939950-73-7. The importance of sulfide minerals in ores has long been, and continues to be, a major reason for the interest of mineralogists and geochemists in these materials.
In this work, we apply spectral sensing and multivariate data analysis methodologies to identify and classify copper and iron sulfide minerals present in the blend from spectra measured during ...
Cite examples of how copper deposits occur. Choose one or more: OA. in carbonae ore minerals B. in sulfide ore minerals C. as an agglomeration metal D.as a native metal
2011-10-17 · ?2004 by Economic Geology Vol. 99, pp. 1509–1532 Textural, Compositional, and Sulfur Isotope Variations of Sulfide Minerals in the Red Dog Zn-Pb-Ag Deposits, Brooks Range, Alaska: Implications for Ore Formation K. D. KELLEY,?
Sulfide copper ores are considered easy to treat provided that the main copper mineral is chalcopyrite. In case the ore contains secondary copper minerals, such as chalcocite, bornite and covellite, depression of pyrite may be a problem because the pyrite can be activated by copper ions generated during the grinding operation.
2016-1-28 · associated with magmatic base metal sulfide minerals in layered mafic or ultramafic igneous intrusions.The common association of PGEs with sulfide minerals is a result of processes of magmatic and sulfide liquid segregation and fractionation. The mineralogical nature of the ores is dependent on a number of factors
2019-10-6 · Simply said; a Flotation Collectors is a chemical used to make the surface of minerals, which is metallic, hydrophobic or in layman’s term ‘afraid of water’ or ‘water hating’ as others like to say. This chemical used will behaved, in a way, as a wax would when you applied it to your car. After wax (or hydrophobic agent) is adhered to the surface, that surface with see water pearl-away.
2019-10-1 · Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Solutions of sulfide salts are corrosive. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide. Hydrogen sulfide (H 2 S) and bisulfide (SH −) are the conjugate ...
2019-10-2 · Oxidation and collector adsorption in sulfide mineral flotation 555 highly variable, and the presence of small, oxidized particles and particle interactions must be considered. The mechanisms of surface oxidation and the consequent physical and chemical forms of oxidation products on the surface, derived from studies using the
The most common method for recovering a copper sulfide concentrate from an ore is by froth flotation. The ore is wet ground to form a mineral pulp, which is usually . conditioned with a collector compound that adsorbs to the surface of copper sulfide minerals and makes the surface of copper sulfide minerals more hydrophobic.
2012-3-8 · In the traditional view, supergene ore and gangue minerals are the products of reactions between hypogene sulfide minerals and descending, acidic meteoric waters; these processes take place at or near the ground surface in subaerial environments (Guilbert and Park, 1986). In VMS deposits, copper and other metals are mobilized from primary massive
2019-10-1 · The traditional method used at most mines involves the ore being broken and brought to the surface for crushing. The ore is then ground finely before the copper-bearing sulfide minerals are concentrated by a flotation process which separates the grains of …
2019-8-5 · Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid. Ferric sulfate, which is a powerful oxidizing agent, then oxidizes the copper sulfide minerals and the copper contained is then leached by the sulfuric acid formed. In the case of uranium, the ferric sulfate ...
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 ...
Start studying Chapter 4 - Minerals Earth Science. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Of around 50 metallic minerals, just a few make up the great majority of specimens. This gallery includes their color, streak, Mohs hardness, other distinguishing characteristics, and chemical formula. Streak, the color of the powdered mineral, is a truer indication of color than the surface appearance, which can be affected by tarnish and stains.
smelting of copper from the sulfide ore, a bright green and very soft mineral, was demonstrated. 0. 0. ... The sulfide minerals recorded from the lodes comprise pyrite, pyrrhotite, ... The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of ...
sulfide definition: 1. US spelling of sulphide 2. a chemical formed from sulfur and another element. Learn more.
Pshenichnyi, G.N., Selenium and tellurium in the ores and minerals of the Oktyabr’skoe copper sulfide deposits at the South Urals, Mineralogiya, geokhimiya, metamorfizm ipoleznye iskopaemye Bashkirskogo Zaural’ya (Mineralogy, Geochemistry, Metamorphism, and Mineral Resources of the Bashkirian Transurals), Ufa: BFAN, 1974, pp. 69–74.
Chalcopyrite belongs to the sulfide group of minerals. ... Yes: If aqueous solutions of copper sulfate and sodium sulfide are mixed, copper sulfide will precipitate from the mixture.
2016-12-27 · Thus, in a Cu–Zn deposit the copper may be contained in chalcopyrite and/or bornite, and the zinc in sphalerite. Other sulfide minerals usually found in association with these ore minerals are pyrite and/or pyrrhotite; common accessory oxide minerals are magnetite and hematite.
Start studying Chapter 3 (Multiple Choice. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... c. copper, ice, quartz, topaz, diamond, corundum ... Common examples of sulfide and sulfate minerals, respectively are: galena and gypsum.
2010-9-15 · Magmatic Sulfide-Rich Nickel-Copper Deposits Related to Picrite and (or) Tholeiitic Basalt Dike-Sill Complexes: A Preliminary Deposit Model . By Klaus J. Schulz, Val W. Chandler, Suzanne W. Nicholson, Nadine Piatak, Robert R. Seal, II, Laurel G. Woodruff, and Michael L. Zientek . Open-File Report 2010–1179 . U.S. Department of the Interior
Pyrite is a major source of iron and is one of the most abundant of the sulfur minerals. Zinc, cadmium, mercury, copper, silver, and many other elements occur in nature as sulfides. Preparation of sulfides. Most metals react directly with sulfur to form metal sulfides—i.e., compounds that contain a metal atom and the sulfide ion, S 2−.