1 Ore Deposits ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS KG McQueen CRC LEME Australian National University Canberra ACT 0200 and School of REHS University of Canberra ACT 2601 INTRODUCTION Ore deposits are crustal concentrations of useful elements that can be exploited at a prot Like all crustal rocks they consist of minerals
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The lithosphere consists of rocks which contain minerals Minerals are natural compounds formed through geological processes A mineral could be a pure element but more often minerals are made up of many different elements combined Minerals are useful chemical compounds for making new materials that we can use in our daily lives
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CIM Definition Standards 2014 were used to report the Mineral Resources Cutoff grade applied to the open pit Mineral Resources is 3 PbZn and that applied to the underground is 5 PbZn Based on the following metal prices US095lb for Pb US105lb for Zn and US165oz for silver Exchange rate of US075 A10
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Oct 16 2016nbsp018332Classification of Mineral Deposit in Egypt 1 Egyptian Ore Deposits GE4107 Prof Dr Hassan Z Harraz Geology Department Faculty of Science Tanta University hharraz2006yahoocom 2016 2017 Prof Dr HZ Harraz Presentation 1 2
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Figure 1 Generalized Model of Mineral Resource Development Figure 2 Canadian Reserves of Selected Major Metals 19882010 Metal Contained in Proven and Probable Mineable Ore in Operating Mines and Deposits Committed to Production as at December 31 of Each Year
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metal ore processing Mineral processing Wikipedia OverviewUnit operationsHistoryOther processesSee alsoConferencesNotesSources Mineral processing can involve four general types of unit operation comminution particle size reduction sizing separation of particle sizes by screening or classification concentration by taking advantage of physical and surface chemical properties and
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Purchase Advances in Gold Ore Processing Volume 15 1st Edition Print Book amp EBook ISBN 9780444517302 9780080459080
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Nov 01 2014nbsp0183323 Mining extract nonmetallic minerals from ground 4 Beneficiation separate nonmetallic minerals from other mined rock Mill 5 Refining extract pure mineral commodity from the ore mineral get the good stuff out of waste rock Refinery 6 Transportation carry commodity to market
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Introduction to Mineral Processing 2 10 Introduction 11 Mineral Processing and Extractive Metallurgy Mineral processing is a major division in the science of Extractive Metallurgy Extractive metallurgy has been defined as the science and art of extracting metals from their ores refining
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A variety of geological processes form ore bodies The formation of the ore process is called the genesis of the ore Classification of Ore Minerals Ore Mineral deposits are categorized according to different criteria that have been established through the study of economic geology or mineral genesis Typical are the classifications below
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It is usually found in granular habit and as wiry branching lamellar or scaly masses Widely distributed in nature it is a primary hydrothermal mineral It also forms by alteration of other silverbearing minerals Much of the worlds silver production is a byproduct of refining lead copper and zinc
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Although some silverbearing ores contain silver as their largest metal value virtually none has silver as its main constituent A typical ore might contain 0085 percent silver 05 percent lead 05 percent copper and 03 percent antimony
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Often ore deposits are classified after examples of their type for instance Broken Hill type leadzincsilver deposits or Carlintype gold deposits Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation which roughly also correlates with particular mineralising fluids mineral
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unsubstantiated mineral project disclosures gold reserves at BreXs Busang were alleged to be 200 million ounces 6200 t or up to 8 of the entire worlds gold reserves FRAUD Similar to JORC joint ore reserves committee code Australia South African Code for the Reporting of Mineral Resources and Mineral Reserves SAMREC
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The compound of a metal found in nature is called a mineral The minerals from which metals can be economically and conveniently extracted are called ores An ore is usually contaminated with earthy or undesired materials known as gangue Native ores contain the metal in the free state Silver gold and platinum occur as native ores
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A typical arsenical gold ore contains arsenopyrite as the major arsenic mineral However some arsenical gold ores such as those from Nevada in the USA Getchel deposit contain realgar and orpiment as the major arsenicbearing minerals Pyrite if present in an arsenical gold ore may contain some gold as minute inclusions
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Ore genesis Wikipedia Classification of ore deposits Many may be formed by one or more of the basic genesis processes above creating ambiguous classifications and much argument and conjecture Often ore deposits are classified after examples of their type for instance Broken Hill type leadzincsilver deposits or Carlinype gold deposits
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The extracted ore must be mill ed to prepare it for further recovery activities Uniformly sized particles may be obtained by crushing grinding and wet or dry classification The degree of milling performed on the ore depends on the gold concentration of the ore mineralogy and hardness of the ore the mills capacity and the next planned
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212221 Gold Ore Mining 212222 Silver Ore Mining 21223 Copper Nickel Lead and Zinc Mining 212231 Lead Ore and Zinc Ore Mining 212234 Copper Ore and Nickel Ore Mining 21229 Other Metal Ore Mining 212291 UraniumRadiumVanadium Ore Mining 212299 All Other Metal Ore Mining 2123 Nonmetallic Mineral Mining and Quarrying
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163 Mineral Resources Goldbearing quartz vein from California Mineral resources while principally nonrenewable are generally placed in two main categories metallic containing metals or nonmetallic containing other useful materials Most mining is focused on metallic mineralsA significant part of the advancement of human society has been developing the knowledge and technologies
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First the ore needs to be concentrated with some processes like hydraulic washing magnetic separation etc then finally the isolation of pure metal is done Concentration of Ores This is the process of isolation of ore from the gangue This involves various processes that depend on the properties of the metal ore
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Robert F Poulsen KH and Dub233 B G OLD DEPOSITS AND THEIR GEOLOGICAL CLASSIFICATION 211 Table 1 Commonly recognized types of lode gold deposits and their main geological attributes contd Deposit Type Associated Alteration Metal Association Size amp Grade of Deposits Selected References
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A cutoff grade COG is an industryaccepted standard expression used to determine what part of a mineral deposit to include in a mineral resource estimate MRE For MRE reporting COGs tend to be rounded down to ensure that material of no economic significance is excluded from the resource
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Jan 01 1999nbsp018332Ore Group Definition Base Metals Silver and Cobalt Average values of main block in Ingaldhal Sulphide Deposit lt 50 gt 90 lt 50 5090 1 Ore Group 1 Definition yy gt 90 0100 CuZn 5090 gt SO I Cu2x1Pb I 5090 1 50SO Note Copper Ratio CR 100 CuCu Zn Cu ore group also includes Lead Ratio less than 10
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ADVERTISEMENTS After reading this article you will learn about 1 Meaning of Mineral Deposits 2 Classification of Mineral Deposits 3 Mineral Veins and Composition of Ore 4 Prospecting of Mineral Deposits 5 Metals Extracted Contents Meaning of Mineral deposits Classification of Mineral Deposits Mineral Veins and Composition of Ore Prospecting of Mineral Deposits Metals Extracted
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