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Showing 1 to 20 of 26 for “"Ore Deposit"”.
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A textural and chemical analysis of the Hanson Lake ore deposit, Saskatchewan
The Hanson Lake ore body was a small (156,000 tons), massive lens with sharp ore-wall rock contacts and a homogeneous mineralogy. The major sulfide minerals were sphalerite and galena. Textures of the sulfide and gangue minerals indicate that the ore body had undergone deformation and …
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Statistical Analysis of the Environmental Geochemistry of an Unmined Uranium Ore Deposit
… particularly important is in the exploitation of ore deposits. Ore deposits consist of concentrations of elements or minerals that are enriched enough to be of potential economic value. Their unusual geochemistry often leaves a signature on the environment that can both aid in location an economic …
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A study of the crystal chemistry, cathodoluminescence, geochemistry and oxygen isotopes in Scheelite: application towards discriminating among differing ore-deposit systems
… from a total of 37 of world-wide, differing ore-deposit settings (orogenic, sediment- and greenstone-hosted, skarn, porphyry, greisen, volcanogenic massive sulfide, breccia and polymetallic deposits) were examined using cathodoluminescence, SEMEDS, LA-ICP-MS and whole-grain stable isotopic …
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The Marcona - Mina Justa District, South-Central Perú: Implications for the Genesis and Definition of the Iron Oxide-Copper (-Gold) Ore Deposit Clan
… largest concentration of iron oxide-copper-gold deposits in the Central Andes. Hydrothermal activity occurred episodically from 177 to 95 Ma and was controlled by NE-striking faults. At Marcona, emplacement of massive magnetite orebodies with subordinate, overprinted magnetite-sulphide …
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The Dispersions of Copper, Lead and Zinc in the Soils and Juniper Trees Associated With a Shallow Lead-Zinc Ore Deposit: a Potential Environmental Problem
… in surficial materials near a shallow lead-zinc ore deposit. Geophysical procedures were used to determine the extent of the ore deposit while geochemical procedures were used to study the metal dispersion in the soils and portions of juniper trees. A rectangular grid was established adjacent to …
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Lagerstätteneigenschaften und Indikatoren als Basis zur globalen Bewertung einer nachhaltigen Rohstoffverfügbarkeit von Kupfererz
… and an efficient use of metallic raw materials. Ore deposits represent the base of the primary metallic material flow. Therefore, specific geological and mineralogical aspects of ore deposits characterising the beginning of a material flow analysis will be identified and analysed. The example of …
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Der Einfluss von Lagerstätteneigenschaften auf eine nachhaltige Rohstoffnutzung am Beispiel Kupfer
… the question about the optimal exploitation of deposits. The availability of raw materials for the primary metal production depends on geological processes that shaped the present characteristics of the ore deposits.In the scope of the work presented the influence of ore deposit characteristics …
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A Comparison of Geochemistry, Carbonate Mineralogy, and Argillic Alteration between the Dome Prospect and the Main Au Resource of the Donlin Creek Project in Southwest Alaska
… relationship between these two dissimilar ore deposit types. The precious-metal mineral assemblage is composed of auriferous arsenopyrite-pyrite ± stibnite, realgar, and native arsenic intimately associated with Fe-dolomite. Crystallization of euhedral arsenopyrite on porous …
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Methoden der EDV-gestützten, dreidimensionalen Lagerstättenmodellierung am Beispiel ausgewählter Bauxitvorkommen
Before the background of a resource-sensitive production and the optimization of metallic raw material flows, this study presents a systematic and uniform methodology to realize the computer-aided three-dimensional modeling of bauxite deposits by use of the exploration and mining Software …
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A thermochemical study of the ore deposits of the Milliken mine, New Lead Belt, Missouri
<p>"The ore body at the Milliken mine is a typical Mississippi Valleytype ore deposit. Mineralization is in a dolostone and structures are subtle, but very important ore controls. The major mineralogy is simple, predominately galena, luminescent hydrothermal dolomite, sphalerite and chalcopyrite. …
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Pyrite porphyroblast paragenesis at the Cherokee Mine, Ducktown, Tennessee
… iron-rich, stratabound, massive sulfide ore at the Cherokee Mine, Ducktown, Tennessee. These porphyroblasts contain abundant inclusions of sphalerite, calcite, and micas that are used to determine the paragenesis of the porphyroblasts and the metamorphic history of the ore deposit. The …
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The rates of oxidation of galena and sphalerite in acidic ferric chloride solutions
… similar to that expected in a weathering ore deposit . The specific surface area of the run solids was determined by N₂ BET procedure and the surface textures observed by SEM. The amount of Fe³⁺ converted to Fe²⁺ by the oxidation reaction was determined using an Eh electrode. Solid …
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An investigation into the floatability of platinum group arsenides and tellurides under varying collector and solution chemistries
… platinum group minerals (PGM) in the Platreef ore deposit. It has been found that there are major losses of these minerals during flotation, with most of the losses attributed to sperrylite (PtAs2). This study has investigated the use of collectors with greater electron-donating properties such …
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Sediment-hosted Zn-Pb-Ag (+ Cu) deposits in the Mount Isa region: An epigenetic approach to mineralisation
… contains numerous sediment-hosted Zn-Pb-Ag-Cu deposits. Previous research on these deposits has resulted in two contrasting metallogenic models: (1) Zn-Pb-Ag mineralisation was formed during the deposition of the host Urquhart Shale at ca. 1655 Ma and was overprinted by Cu mineralisation at ca. …
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Evidence for rapid epithermal mineralization and coeval bimodal volcanism, Bruner Au-Ag property, NV USA
… relationships at the underexplored Miocene-age Bruner low-sulfidation epithermal Au-Ag deposit are elucidated using field and laboratory studies. Bruner is located in central Nevada within the Great Basin extensional province, near several major volcanic trends (Western …
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Application of platinum-group element (PGE) geochemistry to select geological problems
Porphyry deposits produce nearly 75% of the world's Cu, 95% of its Mo and 35% of its Au. These deposits are related to subduction zones, and their tectonic setting is a critical factor in determining their occurrence. However, not all porphyries give rise to economic mineralisation. Over 90% are …
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Application of platinum-group element (PGE) geochemistry to select geological problems
Porphyry deposits produce nearly 75% of the world's Cu, 95% of its Mo and 35% of its Au. These deposits are related to subduction zones, and their tectonic setting is a critical factor in determining their occurrence. However, not all porphyries give rise to economic mineralisation. Over 90% are …
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High tenor NI-PGE sulfide mineralization of the south manasan ultramafic intrusion, Thompson Nickel Belt, Manitoba
… chemistry obtained on representative drill core throughout the South Manasan intrusion have been used to establish a type section in order to evaluate the relative roles of primary magmatic versus secondary (i.e., serpentinization, carbonate alteration and deformation) processes. These data …
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Recognising cryptic alteration surrounding the Mount Isa Copper Deposits: Implications for controls on fluid flow, and mineral exploration
… system responsible for forming this world-class orebody. This study demonstrates the utility of several different approaches to identify and map cryptic alteration haloes associated with copper mineralisation at Mount Isa. Bulk geochemical techniques, such as carbon and oxygen stable isotope …
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Structural geology and geochemistry of sedimentary rock-hosted gold in the eastern Nadaleen Trend, Yukon Territory, Canada
… within the eastern Nadaleen Trend. Major Au deposits within the eastern Nadaleen Trend occur within moderately to steeply S- to SSW-plunging anticlines and not within folds in other orientations or synclines. The orientation of the folds that host Au is oblique to the regional trend and they …
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