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Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laser-ablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyry-type ore deposits Copper (Cu) gold (Au) and iron (Fe) are first concentrated in a sulfide melt during magmatic evolution and then released to an ore-forming Ore minerals-More than 100 uranium-bearing miner Geology-Uranium ore deposits occur in a great va riety of rocks of igneous metamorphic and sedimentary origin Primary deposits in hydrothermal veins appear to favor felsic intrusive rocks and arenaceous metasedi ments as host rocks Within the veins associated minerals contain in decreasing order of abundance iron copper cobalt

Ore Deposits

Minerals that occur in ore deposits but do not contain the valuable substance Mineral Resources - In situ - Reasonable prospects for economic extraction based on a judgement by the qualified person - Inferred indicated and measured Mineral Reserves - Mineable at a profit - At least a pre-feasibility study Sufficient tonnage and grade to be viable in the opinion of qualified person(s

Minerals that occur in ore deposits but do not contain the valuable substance Mineral Resources - In situ - Reasonable prospects for economic extraction based on a judgement by the qualified person - Inferred indicated and measured Mineral Reserves - Mineable at a profit - At least a pre-feasibility study Sufficient tonnage and grade to be viable in the opinion of qualified person(s

Copper 3 5Stockwork network of many cross-cutting veins 6Disseminated small fine-grained particles of ore mineral dispersed through a rock 7Intrusion a body of igneous rock emplaced into pre-existing rocks 8Stratabound an ore deposit that is confined to a single sedimentary bed or horizon 9Sedimentary rocks formed from material derived from other rocks by weathering

The proportion of feldspar in the earth's crust is up to 60% which can occur in igneous rock metamorphic rock and sedimentary rock Get Price [] OXLEY POTASH PROJECT ACQUISITION most potash projects Comprised of up to 90% potash feldspar with weighted average combined interval grades of up to 10 1% K 2O Only 125km from Geraldton Port Existing roads rail power and gas infrastructure

All ore deposits are mineral deposits but the reverse is not true Ore deposit is an economic term while mineral deposit is a geologic term Whether a given mineral deposit is also an ore deposit depends on many factors other than the level of concentration and the size of the deposit all factors that affect the mining processing and transporting of the ore must be considered as well

Carlin-Type Gold Deposits in Nevada Critical Geologic Characteristics and Viable Models The deposits occur in clusters or along trends (Fig 1) and exhibit both structural and stratigraphic controls They were first recognized as a new deposit type after discovery of the Carlin deposit in 1961 even though some deposits had been mined since the early 1900s Current production from Carlin

The Origin of Cu/Au Ratios in Porphyry

Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laser-ablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyry-type ore deposits Copper (Cu) gold (Au) and iron (Fe) are first concentrated in a sulfide melt during magmatic evolution and then released to an ore-forming

Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laser-ablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyry-type ore deposits Copper (Cu) gold (Au) and iron (Fe) are first concentrated in a sulfide melt during magmatic evolution and then released to an ore-forming

Iron Ore Deposits Of Somalia We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment milling equipment mineral processing equipment and building materials equipment And they are mainly used to crush coarse minerals like gold and copper ore metals like steel and iron glass coal asphalt gravel concrete

Surface mining is suitable for large low-grade ore deposits which occur below a thin layer of rock or alluvial deposits found in sand and riverbeds Underground mining is used for small high-grade deposits covered with a thick overburden (soil and rock above the ore) or for deep and sloping deposits General Process

Zinc And Zinc Deposits In Pakistan Mar 19 2016Typically the ore body contains more lead than zinc and is associated with silver 13 Zinc Deposits Of Pakistan The Jurassic rocks of the Lasbela Khuzdar Belt have the potential to host several World class zinc lead ore deposits Zinc deposits are also found in Duddar Surmai and Gunga which are estimated over 160 million tons 14

First I suggest changing the title of this thread to Lightning strikes on ore deposits (changed from lightening which refers to making something brighter and has a medical usage also--look it up!) Lightning strikes mostly objects that are poor conductors of electric current such as trees and barns Sharp points are the best things to aid static electric discharge That's why

Learning Goals -What is an ore deposit? -What is a porphyry copper deposit? -Plot data from table to map -Calculate ore grade of selected area and determine if it is economic Background knowledge needed for activity -3 rock types -understanding of how to read a map Activity Copper Longhorn Exploration Company is searching for the next big copper deposit in the southern Arizona area The

Volcanogenic massive sulfide ore deposits also known as VMS ore deposits are a type of metal sulfide ore deposit mainly copper-zinc which are associated with and created by volcanic-associated hydrothermal events in submarine environments These deposits are also sometimes called volcanic-hosted massive sulfide (VHMS) deposits The density generally is 4500 kg/m 3

Ore deposits are an economic term and the beds are a geological term All factors affecting the mining processing and transportation of ore must also be considered Such factors include a form of deposit depth under the surface geographical distance access to transport political stability of the region and market factors such as the price of metals in world trade and borrowing costs

Iron Ore

The iron ore deposits are contained within a sequence of early Proterozoic sediments of the Transvaal Supergroup deposited between 2 500 and 2 200 million years ago In general two types of ore are present namely the laminated hematite ore which forms part of the Manganore iron formation and the conglomerate ore which belongs to the Doornfontein Conglomerate Member at the base of the

The iron ore deposits are contained within a sequence of early Proterozoic sediments of the Transvaal Supergroup deposited between 2 500 and 2 200 million years ago In general two types of ore are present namely the laminated hematite ore which forms part of the Manganore iron formation and the conglomerate ore which belongs to the Doornfontein Conglomerate Member at the base of the

Minerals occur in different types of rocks Some are found in igneous rocks some in metamorphic rocks while others occur in sedimentary rocks Generally metallic minerals are found in igneous and metamorphic rock formations that form large plateaus Iron-ore in north Sweden copper and nickel deposits in Ontario Canada iron nickel chromites and platinum in South Africa are examples of

2012-11-15magmatic ore deposits a number of processes that occur during cooling and crystallization of magmatic bodies can lead to the separation and concentration of minerals-pegmatites 2-layered intrusions 3-kimberlites examples of magmatic ore deposits 1-chromite deposits 2-nickel copper deposits 3-platinum group metal pgm deposits chat online Skarn Deposits 2010-12-21skarn deposits

They occur in several places in Chhattisgarh and M P Large high quality deposits occur in Bastar and Durg district Name of Deposit i Hematite Deposits a Bastar Dist - Rowghat ore and Chottadongar deposits b Duntewara dist – Bailadila hill-range comprises 14 deposits c Durg dist – Dalli-Rajhara Kanchar Jhasandali Koudekosa and minor occurrences near Khairagarh Bela Katul

Extensive deposits also occur in Seymour Formation gravels and basal Cretaceous formations in north central Texas in alluvial fan deposits east of the Caprock and in the mountain areas of Trans-Pecos Texas Sand and gravel deposits are mined primarily as a source of construction materials The principal sand and gravel producing counties in Texas include Bexar Brazos Colorado Dallas

Australia's iron ore production has seen strong growth over the past five decades and over this period of time a very significant change in the blend of Australian iron ore production has occurred Initially there was a clear preference for the mining of Premium Brockman ores in the Pilbara although these large resources are being depleted over time This is reflected in Premium Brockman

Carbonate-hosted lead-zinc ore deposits are important and highly valuable concentrations of lead and zinc sulfide ores hosted within carbonate (limestone marl dolomite) formations and which share a common genetic origin These ore bodies range from 0 5 million tonnes of contained ore to 20 million tonnes or more and have a grade of between 4% combined lead and zinc to over 14% combined

Highlights from the Symposium on the Formation of Uranium Ore Deposits sponsored by IAEA are given The supply challenge porphyry uranium deposits and exploration 16 Ambrosia Lakes sandstone deposit types vein deposits fossil time markers and uranium in Brazil and Karroo were covered (LK) Publication Date Mon Jul 01 00 00 00 EDT 1974 Research Org Originating Research Org not

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