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Letteratura scientifica selezionata sul tema "Ore deposits"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 agosto 2024

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Articoli di riviste sul tema "Ore deposits"

McKibben, Michael A. "Ore deposits". Reviews of Geophysics 33 (1995): 53. http://dx.doi.org/10.1029/95rg01164.

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GLUKHOV, A. "Use of play analysis in ore deposit forecasting аnd prospecting". Domestic geology, n. 5 (25 novembre 2021): 45–50. http://dx.doi.org/10.47765/0869-7175-2021-10027.

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Play analysis was developed and is successfully used in oil and gas deposit prospecting. It is recommended for use in ore deposit forecasting and prospecting. Ore plays are deposits, mineral occurrences and prospects of common genesis, they are confined to a single structural and formational complex. Within one play, deposits are prospected and explored using the same technique; discovered deposits have similar technological ore properties. Geological/genetic and technological play uniformity simplifies their forecast assessment.

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Bi, Tian Ping, Li Shuang Sun e Peng Feng Bi. "A Spatial Measurement and Statistics Method to Forecast Ore Deposits". Applied Mechanics and Materials 333-335 (luglio 2013): 109–12. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.109.

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This study used spatial measurement and statistics methods to investigate spatial relationship between ore deposits and fractures in Liaoning province of China. Firstly, bivariate J function found that the ore deposits have a clustering trend around the fractures. Secondly, a conditional intensity formula for ore deposits based on Poisson process was used to model the ore deposits spatial dependence on the fractures, and the formula of model was fitted in statistics software called R. Finally, the fitted model was used to predict high intensity areas of buried ore deposits based on locations of visible fractures, which could be used to guide ore deposit exploration.

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Clemmey, H. "Sedimentary ore deposits". Geological Society, London, Special Publications 18, n. 1 (1985): 229–47. http://dx.doi.org/10.1144/gsl.sp.1985.018.01.11.

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Wolf, K. H. "Uranium ore deposits". Ore Geology Reviews 9, n. 3 (agosto 1994): 253–54. http://dx.doi.org/10.1016/0169-1368(94)90011-6.

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Gauthier-Lafaye, F. "Uranium ore deposits". Earth-Science Reviews 36, n. 1-2 (aprile 1994): 146. http://dx.doi.org/10.1016/0012-8252(94)90022-1.

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Ma, Si Gen, Ming Qin He, Yun Zheng Tang e Zhen Hua Wang. "Geological Characteristics and Prospecting Orientation of the Altered Rock Type Gold Deposits in Southeastern Guizhou Province, China". Applied Mechanics and Materials 71-78 (luglio 2011): 1809–15. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1809.

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The altered rock type gold deposit is the one type gold deposits which can form super-large gold deposit. The super-large altered rock type gold deposit has its specialties among the forming time, forming generation, ore-hosted strata, wall rock alteration, area and structure. The southeast Guizhou Province has wonderful minerogenetic conditions. The area has the similar minerogenetic geological setting as many large, super-large altered rock type gold deposits. The characteristics of the altered rock type gold deposits that are distributed in this area have many similarities with other large, super-large altered rock gold deposits. It indicates that the deep of the southeast of Guizhou Province altered rock type gold metallogenic belt has great prospecting potentiality for looking for such type gold deposits from ore-hosted strata, ore-control structure, mineral paragenesis and ore-forming temperature etc.

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Togizov, Kuanysh, Lyudmila Issayeva, Daulet Muratkhanov, Madina Kurmangazhina, Maciej Swęd e Agata Duczmal-Czernikiewicz. "Rare Earth Elements in the Shok-Karagay Ore Fields (Syrymbet Ore District, Northern Kazakhstan) and Visualisation of the Deposits Using the Geography Information System". Minerals 13, n. 11 (20 novembre 2023): 1458. http://dx.doi.org/10.3390/min13111458.

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Rare earth elements deposited in ion-adsorption clay-type deposits in Northern Kazakhstan were recognised using mineralogical and geochemical methods. The diversity and mineralogical properties of the Shok-Karagay deposit and Syrymbet ore fields under investigation in this study are closely related to the process of the formation of the deposits as well as the deposits’ architecture. A combination of mineralogical research and digital technology (GIS) was used to characterise the deposits. Rare earth elements from the cerium series were found in the following quantities: La (in ppm), 43–200; Ce, 57–206; Sm, 100–300; Eu, 22–100. Yttrium-series elements were found in the following quantities: Y, 31–106; Gd, 100–200; Tb, 100–200; Dy, 0–300; Ho, 0–20; Er, 0–364; Tm, 0.28–0.85; Yb, 2.2–39; Lu, 0–200. The wireframe and block models indicated that the bodies’ forms were 1800 m wide, 3500 m long, and 20–40 m thick. The major REE group minerals in both bodies were monazite and xenotime, whereas the minor minerals included yttrium parisite, silicorabdophanite, thorite, and orangite; moreover, ilmenite and titanomagnetite were found. The 3D models that were constructed indicated that the mineralogy and geochemistry of the ore bodies played a determining role in the deposits’ architecture.

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Nikiforov, Alexander. "ORE CONTROL OF KHIZOVAARA STRUCTURE DEPOSITS". SWS Journal of EARTH AND PLANETARY SCIENCES 1, n. 1 (1 giugno 2019): 11–24. http://dx.doi.org/10.35603/eps2019/issue1.02.

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Abstract Ore-controlling factors determine the patterns of formation and localization of mineralization within ore regions and deposits. The need for this study arises from the importance of integrated assessment of mineral resources and improvement of metasomatic formation techniques. This is especially important for geological materials which are mined for their direct commercial value (industrial materials). This article is devoted to the study of the ore control of complex industrial minerals. The Khizovaara structure belongs to the Tikshozero greenstone belt. Within the structure, a multistage metamorphism and metasomatism processes are manifested. The totality of lithological, structural and petrologic ore control factors determines the existence within the structure of several deposits. These are deposits of industrial minerals, such as garnet, quartz, muscovite, kyanite, staurolite. In almost all cases, the ores are complex. The following objects were studied: Southern Lens (kyanite + quartz) deposit, Northern lens (kyanite + quartz) deposit, East Khizovaara (muscovite + quartz) deposit, Vysota-181 (garnet + staurolite + kyanite + muscovite + quartz) deposit, ore occurence Fuxit (decorative rocks). For the ores of each site, the processes of regional metamorphism of the amphibolite facies of kyanite-biotite and muscovite-chlorite-kyanite subfacies are important. Metamorphism, tectonic regime and geological connection with rocks has been studied as a ore control factor, based on this, data on the quantitative distribution of industrial minerals of metamorphic genesis have been obtained. Acidic and alkaline metasomatites of each site are considered. On the basis of these data, metasomatic processes that lead to the formation of complex ores are revealed. The process of superposition of metasomatosis products of the late stage on the products of early stage metasomatosis was studied. This process leads to the formation of complex ores of three or four minerals. The result of the work is a general scheme of metamorphic and metasomatic ores control

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DAMDINOV, BULAT, ILYA VIKENTIEV, LYUDMILA DAMDINOVA, OLGA MININA, SERGEI ZHMODIK, IVAN SOBOLEV, YEVGENIYA TYUKOVA et al. "Problems of the genesis of ore deposits of the Ozerninsky polymetallic ore cluster (western Transbaikalian region, Russia)". Domestic geology, n. 2 (5 giugno 2023): 73–90. http://dx.doi.org/10.47765/0869-7175-2023-10010.

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The Ozerninsky ore cluster is a unique geological megastructure in terms of the concentration of rich and diverse mineralization. More than 20 deposits of lead, zinc, iron, copper, barite, and gold are concentrated here, including the Ozernoye polymetallic deposit, the largest in Russia in terms of the zinc reserve. Our studies have shown that many morphological features of the ores of this deposit, which most researchers assign to the hydrothermal-sedimentary type, are ambiguous; some signs of a metasomatic origin of the sulfide mineralization are observed. Along with lead-zinc deposits, complex gold-polymetallic, iron-oxide (hematite-magnetite), and copper-barite deposits are known within the Ozerninsky ore cluster, the origin of which remains debatable. Due to the wide distribution of exogenous gold deposits, there exists a need to assess the gold content of various types of the endogenous ore mineralization as potential sources of the precious metals. Despite the rather long period of studies of the Ozerninsky ore cluster (more than half a century), many questions related to ratios of the different mineralization types, the age, genesis of the ores, and geodynamic settings of formation of the deposits are still the subject of discussion. Solution of these issues requires more detailed geochronological and lithological-stratigraphic investigations conducted in combination with studying the mineral composition of the ores, their isotope-geochemical characteristics, and the physico-chemical formation conditions.

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Tesi sul tema "Ore deposits"

Schoeman, Philo. "Overview and comparison of Besshi-type deposits ancient and recent". Thesis, Rhodes University, 1996. http://hdl.handle.net/10962/d1005595.

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Besshi-type deposits range in age from early Proterozoic to early Tertiary, of which the largest number are late Proterozoic, early Palaeozoic or Mesozoic in age. No Archaean examples of Besshi-type deposits are known, probably due to insufficient availability of sialic crust for erosion and clastic marine sedimentation before the start of the Proterozoic. All Besshi-type deposits are contained within sequences of clastic sedimentary rock and intercalated basalts in a marine environment. The basalts and amphibolites are principally tholeiitic in composition. Besshi-type deposits characteristically form stratiform 1enses and sheet-like accumulations of semi-massive to massive sulphide. The main ore assemblage consists dominantly of pyrite and/or pyrrhotite with variable amounts of chalcopyrite, sphalerite and trace galena, arsenopyrite, gold and e1ectrum, barite being absent in general. The median Besshi-type deposit (n=75) contains 1.3 million tonnes (Mt) of massive sulphide with a Cu grade running at 1.43%. It is suggested that Besshi-type deposits form by both exhalative and synsedimentary replacement processes when considering geological features and comparisons with modern analogues in the Guaymas Basin, Middle Valley and Escanaba Trough. The currently forming metalliferous sediments in the Red Sea provide for a brine pool model explaining the lack of footwall feeder zones below sheet-like deposits. Where thick sulphide lenses are contained in some Besshi-type deposits, combinations of exhalative precipitation and sub-sea-floor replacement of permeable sediments and/or volcanic rocks, take place in the upper parts of submarine hydrothermal systems.

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Unger, Derick Lee Saunders James A. Hames W. "Geochronology and geochemistry of Mid-Miocene Bonanza low-sulfidation epithermal ores of the northern Great Basin, USA". Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Geology_and_Geography/Thesis/Unger_Derick_6.pdf.

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Ash, Philip John. "A review of the sediment-hosted, disseminated precious metal deposits of Nevada : geological setting, classification, genesis and exploration". Thesis, Rhodes University, 1986. http://hdl.handle.net/10962/d1001566.

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Carlin-type, fine-grained, "invisible" or Disseminated Replacement Type gold-silver deposits are all different names for a major new type of ore deposit that is currently being extensively developed in the Western United States. This type of deposit is now being found elsewhere. Thus a descriptive empirical model that emphasizes the geological and geochemical environment of formation is needed to assist the mining industry in the search for similar deposits. These deposits are typically formed in carbonaceous, silty dolomites and Iimestones or mineralization calcareous siltstones rocks and is exceedingly fine-grained is disseminated in the and claystones. host sedimentary Gold-silver , ore. Primary alteration usually less than one micron in size in unoxidized types include decalcification, argillitization, silicification resulting in the and pyritization. Silicification is commonly intense formation of jasperoid bodies which may be the host to higher grade ore. Supergene alteration is dominated by oxidation resulting in the formation of numerous oxides and sulphates and the release of gold from its association with sulphides and organic carbon. elements are As, Ba, Hg, Sb, and TI. Commonly associated trace Available geological, geochemical, fluid inclusion and stable-isotope studies lead to the conclusion that a circulating hydrothermal system is the important factor necessary for gold-silver concentration and deposition. A direct genetic or only casual relation between are deposition and discrete igneous formations remains unclear. However, it is considered that volcanism provided the source of heat necessary for the generation of a circulating hydrothermal system. High angle faults and fold structures facilitate transport and are of prime importance in directing are fluids to favourable host lithologies. The host rocks, overwhelmingly carbonate - rich, include those whose original and/or altered compositions and resulting permeability provide favourable sites for the precipitation of disseminated gold. The processes specialized. resulting Any th ick in the formation of these deposits are section of carbonate rocks has the potential not to produce Disseminated Replacement Type deposits wherever underlying igneous activity has developed a hydrothermal system

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Osterholt, Volker. "Simulation of ore deposit geology and an application at the Yandicoogina iron ore deposit, Western Australia / y Volker Osterholt". [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19175.pdf.

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Slabbert, W. L. "Ore distribution controls of the Navachab Gold Mine, Damara Belt, Karibib District, Namibia". Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1016364.

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The Navachab Gold mine, an orogenic lode gold deposit, is located in the Karibib region of the Pan-African (ca. 550-500) Damara belt of central Namibia. Gold mineralisation is developed within the steeply NW dipping limb of the Karibib dome. Here, ore envelopes trend along three main orientations: a) trends shallowly towards the NE (the down plunge extent), b) trends sub-vertically in and along the down plunge extent and c) trends sub-horizontally across the down plunge extent. The down plunge extent represents the bulk of the gold mineralisation, hosting the only high grade ores mined at Navachab. As such, past work primarily focused on establishing the controls to the mineralisation observed here. The sub-vertical and sub–horizontal ore trends are seen as secondary, lower grade, being hosted in the footwall. By cutting pushbacks into the footwall, in an effort to regain access to high grade pit bottom, future gold production almost exclusively relies upon optimally mining these ores. This underlines the importance to investigate and outline the mineralising controls to the secondary ore trends. This study identified the following prevailing quartz vein sets developed within the footwall, set (1) dips shallowly towards the NE (conjugate vein set), (2) steeply towards the NW (bedding parallel veins) and (3) steeply towards the SE (S2 foliation parallel). The NW and SE dipping sets contain high average gold grades, occurring at an infrequent vein density. The NE dipping veins, as a result of occurrence density alone, was highlighted as the dominant gold hosting set. Veining occurred during the late stages of the NW-SE directed, sub-horizontal shortening (D2) event and is associated with top-to-the-NW thrusting and NW-verging folds. Re-Os molybdenite dating from auriferous quartz veins indicates mineralisation occurred at 525-520 Ma. As crustal shortening amplified the Karibib dome, flexural flow developed fractures along bedding planes, providing the control to bedding parallel veins (NW dipping). With continued crustal compression the dome later experienced fold lock up associated with reduced mean rock stress and sub-horizontal extension occurred along the steeply NW dipping limb. Horizontal extensional gashes sucked in fluids to form the shallowly NE dipping conjugate vein set. These features suggest the regional D2 strain as the first-order control to quartz vein development, down plunge and within the footwall ores. To further define the secondary ores, lithological and structural controls were evaluated on a more detailed local scale. With equal amounts of biotite schist and calc-silicate host rock (bulk of the footwall lithology) material analysed, the biotite schist units were found to contain a larger volume amount of quartz veins. The mineralisation incurred is also developed at higher average gold grades compared to that of the calc-silicates, demonstrating biotite schist having the optimal rheology for quartz vein emplacement. Normal faulting and thrusting occurs widespread, at all scale levels, across the footwall. These were primarily observed along bedding foliations and secondly at higher angles cutting across foliation. The study did not constrain the extent of these, but can conclude faulting plays a very prominent role in re-distributing the secondary ores parallel to bedding along sub-vertical trend planes. Great care should be placed in properly modelling these with 3D software such as Leapfrog. The Navachab gold mineralisation came about as a result of convergent and collisional tectonics activating metamorphic dehydration of the crustal metapelites. As these fluids ascended they absorbed gold from the crust, emplaced by either a magmatic or paleo-placer source. The gold enriched hydrothermal fluids amalgamated in large scale 1ste order structures (shearing of the steep NW limb of the Karibib Dome, the Mon Repos Thrust Zone) that acted as primary active fluid path ways. In the case of Navachab the gold enriched fluid fluxed along these pathways while interacting with fluid sinks related to a physical throttle (brittle schist, folding, bedding parallel shears) and/or a chemical trap (marbles). By summarising and detailing the fluid sinks and active fluid pathways identified by this and previous works, it is strongly recommended that a mineral approach system be designed and implemented as targeting model to lead future exploration endeavours.

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Thomson, Brian. "Geology of silver mineralisation at Candelaria, Nevada, USA". Thesis, University of Aberdeen, 1990. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=238078.

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Candelaria, situated in central western Nevada, along the western margin of the Great Basin, is a large and predominantly low grade, epigenetic disseminated- and vein-type Ag deposit, of Early Cretaceous age. It represents the eroded, deeply oxidised and fault-disrupted root of extensive stratiform quartz-dolomite stockworked and sericite-dolomite-altered zones of medium temperature pyrite-dominated Ag(-Pb-Zn-Sb-As±Cu±Au) sulphide-sulphosalt mineralisation, which is hosted by receptive sedimentary and igneous rocks within structurally favourable zones in a district-scale tectonic pinchout, and which is genetically associated with Cordilleran granodiorite porphyry hypabyssal magmatism (diking), of high K calc-alkaline affinity. The mineralisation occurs along and directly beneath the Pickhandle allochthon, a serpentinite-sheathed volcanic-sedimentary tectonic méange which forms a local 'sole' plate to the regionally extensive Golconda allochthon, which was emplaced onto the edge of continental North America during the Early Triassic Sonoma orogeny. Mineralisation occurred where an irregularity in the Pickhandle thrust plane, caused by thickening of the méange, effected locally deeper truncation of the parautochthonous foreland sequence in its footwall - chiefly marine sediments of the Lower Triassic Candelaria Formation - against the deformed cherts of the Ordovician basement (Palmetto complex), to form a structural trap. Within this trap, mineralisation is hosted mainly by carbonaceous, carbonate- and phosphate-rich (and trace metal-rich) black shales at the base of the Candelaria Formation and by dolomite-quartz-altered serpentinites at the base of the Pickhandle allochthon. Stable isotope data (O, H, S) point to a predominantly magmatic source for the hydrothermal fluids and ore sulphur, a source most likely to be the parent pluton to the granodiorite porphyry dikes. More ore metals were also of igneous origin (mass balance calculations rule out Candelaria member 1 as the chief metal source).

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Becker, Stephen Paul. "Fluid Inclusion Characteristics in Magmatic-Hydrothermal Ore Deposits". Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/28318.

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Magmatic-hydrothermal ore deposits are formed in association with aqueous fluids that exsolve from hydrous silicate melts during ascent and crystallization. These fluids are invariably trapped as inclusions in vein-filling minerals associated with hydrothermal fluid flow, and their composition may be modeled based on the H₂O-NaCl system. Thus, if we know the pressure-volume-temperature-composition (PVTX) properties of H₂O-NaCl solutions, it is possible to interpret the PTX trapping conditions, which is important for understanding the processes leading to the generation of the hydrothermal system and ore mineralization. High salinity (> 26 wt. % NaCl) fluid inclusions contain liquid, vapor, and halite at room temperature, and are common in magmatic-hydrothermal ore deposits. These inclusions homogenize in one of three ways: A) halite disappearance (Tmhalite) followed by liquid-vapor homogenization (ThL-V), B) simultaneous ThL-V and Tmhalite, or C) ThL-V followed by Tmhalite. The PVTX properties of H₂O-NaCl solutions three phase (L+V+H) and liquid-vapor (L+V) phase boundaries are well constrained, allowing researchers to interpret the minimum trapping pressure of inclusion types A and B. However, data that describe the pressure at Tmhalite for inclusion type C are limited to a composition of 40 wt. % NaCl. To resolve this problem, the synthetic fluid inclusion technique was used to determine the relationship between homogenization temperature and minimum trapping pressure for inclusions that homogenize by mode C. These results allow researchers to interpret the minimum trapping pressure of these inclusions, and by extension the depth at which the inclusions formed. The temporal and spatial distribution of fluid inclusions formed in associated with porphyry copper mineralization has been predicted using a computer model. A simple geologic model of an epizonal intrusion was developed based on a Burnham-style model for porphyry systems and thermal models of the evolution of epizonal intrusions. The phase stability fields and fluid inclusion characteristics at any location and time were predicted based on PVTX properties of H₂O-NaCl solutions. These results provide vectors towards the center of a magmatic-hydrothermal system that allow explorationists to use fluid inclusion petrography to predict position with the overall porphyry environment when other indicators of position are absent.
Ph. D.

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Kasmaeeyazdi, Sara <1983&gt. "Geostatistical Modeling of Ore Deposits with Transitional Boundaries". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7983/1/PhD-Thesis-KASMAEEYAZDI-SARA.pdf.

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In mineral resources and ore reserves estimation, a crucial point is the geological domains that will be used for the modelling, as well as the type of boundaries between these domains. The most common geostatistical techniques are based on the assumptions of stationarity of the variable within estimation domains considered hard boundaries (sharp contact between geological units). However, in most cases, the geological mechanisms that generate a deposit are transitional -overlapping in geological units- in nature. In transitional boundary deposits, each geological zone has its own mineral grade distributions and spatial variability, but with an overlapping between geological zones. Hence, any method for estimation models, affects the mine planning with a significant sensitivity particularly in transition areas. Due to this point, the identification of the exact boundaries of mineralization is essential for an accurate estimate of resources. The objective of this dissertation is to develop a methodological framework to be used in presence of transitional boundaries. The methodological framework is introduced and then explained through a case study with transitional boundaries. Moreover, through a mining case study, it will be shown how choosing appropriate methodology for modelling variables and for interpreting the deposit geology will help to optimize parameters identification. The methodological framework in general allows decreasing the uncertainty in resources estimation and reserves selection. The method is general and can be used in other field of geoscience that incorporate numerical modelling, such as environmental modelling, petroleum or mining industry where complex geology deposits should be characterized

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Shellnutt, John Gregory. "A-type granites of the Permian Emeishan large igneous province (SW China) implications for the formation of the giant magmatic oxide deposits /". Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39634498.

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Roditis, Ioannis Stavros 1960. "A PERFORMANCE EVALUATION OF THE INDICATOR KRIGING METHOD ON A GOLD DEPOSIT: A COMPARISON WITH THE ORDINARY KRIGING METHOD". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275482.

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Libri sul tema "Ore deposits"

Dahlkamp, Franz J. Uranium Ore Deposits. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6.

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Dahlkamp, Franz J. Uranium ore deposits. Berlin: Springer-Verlag, 1993.

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Jay, Hodgson C., Mason Robert, Whiting B. H. 1956- e Society of Economic Geologists (U.S.), a cura di. Giant ore deposits. [Golden, Colo.]: Society of Economic Geologists, 1993.

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Parnell, John, Henryk Kucha e P. Landais, a cura di. Bitumens in Ore Deposits. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-85806-2.

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Plotnikov, N. I. Hydrogeology of ore deposits. New Delhi: Oxford & IBH Pub. Co., 1989.

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John, Parnell, Kucha H e Landais P, a cura di. Bitumens in ore deposits. Berlin: Springer-Verlag, 1993.

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Belevt͡sev, I͡Akov Nikolaevich. Metamorphogenic ore formation. Moscow: General Editorial Board for Foreign Language Publications, Nauka Publishers, 1986.

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G, Roberts R., Sheahan Patricia, Cherry M. E e Geological Association of Canada, a cura di. Ore deposit models. [St. John's, Nfld.]: Geological Association of Canada, 1988.

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Patricia, Sheahan, Roberts R. G e Geological Association of Canada, a cura di. Ore deposit models. St. John's, Nfld: Geological Association of Canada, 1988.

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Misra, Kula C. Understanding mineral deposits. Dordrecht: Kluwer Academic Publishers, 2000.

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Capitoli di libri sul tema "Ore deposits"

Cuney, Michel. "Ore Deposits". In Encyclopedia of Earth Sciences Series, 1–13. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39193-9_126-1.

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Pirajno, Franco. "Magmatic Ore Deposits". In Ore Deposits and Mantle Plumes, 387–467. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-2502-6_8.

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Arndt, Nicholas, Stephen Kesler e Clément Ganino. "Magmatic Ore Deposits". In Metals and Society, 41–68. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17232-3_3.

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Hauptmann, Andreas. "Ancient Ore Deposits". In Natural Science in Archaeology, 21–175. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50367-3_3.

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Arndt, Nicholas, e Clément Ganino. "Magmatic Ore Deposits". In Metals and Society, 43–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22996-1_3.

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Dahlkamp, Franz J. "Remarks, Definitions, Units". In Uranium Ore Deposits, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6_1.

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Dahlkamp, Franz J. "Introduction". In Uranium Ore Deposits, 5–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6_2.

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Dahlkamp, Franz J. "Geochemistry and Minerochemistry of Uranium". In Uranium Ore Deposits, 17–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6_3.

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Dahlkamp, Franz J. "Principal Aspects of the Genesis of Uranium Deposits". In Uranium Ore Deposits, 41–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6_4.

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Dahlkamp, Franz J. "Typology of Uranium Deposits". In Uranium Ore Deposits, 57–135. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02892-6_5.

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Atti di convegni sul tema "Ore deposits"

Komarov, V. A., e A. A. Kuzmakov. "Prognostic valuation of ore deposits". In Geophysics of the 21st Century - The Leap into the Future. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.38.f298.

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Pruseth, Kamal Lochan, e Biswajit Mishra. "Magmatic (?) Base Metal Sulfide Deposits". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63403.

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Das, S. K. "Mineralogy and Ore Petrography of Vanadiferous Titaniferous Magnetite Ores of Mayurbhanj Basic Igneous Complex, Odisha". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63394.

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Bobina, T. S., e I. V. Abaturova. "Structural Features of Ore Deposits Weathering". In Engineering and Mining Geophysics 2019 15th Conference and Exhibition. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201901725.

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Dhanendran, S., N. P. Nathan, R. Vijay Kumar, Laya M. B. Pillai e A. Balukkarasu. "Chromite and Sulphide Hosted PGE Mineralisation in Sittampundi Layered Anorthosite Complex, Tamil Nadu". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63385.

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Ramakrishna Setty, S., K. Basavaraj, D. K. Sahu e S. Balakrishnan. "Platinum Group Element Mineralization in the Mothinamakki-Birolli-Suryakalyanigudda Ultramafic-Mafic Complex in Uttara Kannada District, Karnataka". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63386.

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Dora, M. L., A. Kundu, M. Shareef, S. Shome, S. Joshi e K. Koteswar Rao. "Ni-Cu-PGE Mineralization of Heti Prospect, Western Bastar Craton, Central India: An Appraisal Based on Petrographic, SEM and EPMA Study". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63387.

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Mohanty, M., C. Parthasarathi e P. Mahadevappa. "Magmatic Type Platinum Mineralisation in the Mafic-Ultramafic Rocks of Nuggihalli Schist Belt, Hassan District, Karnatak". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63388.

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Devaraju, T. C., e T. T. Alapieti. "Exploration for PGE Mineralization in the Western Dharwar Craton". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63389.

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Vidyadharan, K. T., P. Krishnamurthy e R. H. Sawkar. "Exploration Strategies for Ni-Cu-PGE and Chromite in the Ultramafic-Mafic and Related Rocks of Karnataka, India". In Proceedings of the Workshop on Magmatic Ore Deposits. Geological Society of India, 2015. http://dx.doi.org/10.17491/cgsi/2014/63390.

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Rapporti di organizzazioni sul tema "Ore deposits"

Peter, J. M., e M. G. Gadd. Introduction to the volcanic- and sediment-hosted base-metal ore systems synthesis volume, with a summary of findings. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328015.

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Abstract (sommario):

This volume presents results of research conducted during phase 5 of the Volcanic- and Sedimentary-hosted Base Metals Ore Systems project of the Geological Survey of Canada's Targeted Geoscience Initiative (TGI) program. The papers in this volume include syntheses and primary scientific reports. We present here a synopsis of the findings during this TGI project. Research activities have addressed several mineral deposit types hosted in sedimentary rocks: polymetallic hyper-enriched black shale, sedimentary exhalative Pb-Zn, carbonate-hosted Pb-Zn (Mississippi Valley-type; MVT), and fracture-controlled replacement Zn-Pb. Other carbonate-hosted deposits studied include a magnesite deposit at Mount Brussilof and a rare-earth element-F-Ba deposit at Rock Canyon Creek, both of which lack base metals but are spatially associated with the MVT deposits in the southern Rocky Mountains. Volcanogenic massive-sulfide deposits hosted in volcanic and mixed volcanic-sedimentary host rock settings were also examined. Through field geology, geochemical (lithogeochemistry, stable and radiogenic isotopes, fluid inclusions, and mineral chemistry), and geophysical (rock properties, magnetotelluric, and seismic) tools, the TGI research contributions have advanced genetic and exploration models for volcanic- and sedimentary-hosted base-metal deposits and developed new laboratory, geophysical, and field techniques to support exploration.

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Summerfield, Daisy. Australian Resource Reviews: Manganese Ore 2020. Geoscience Australia, 2021. http://dx.doi.org/10.11636/9781922446541.

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Poulin, R. S., A. M. McDonald, D. J. Kontak e M. B. McClenaghan. Scheelite geochemical signatures and potential for fingerprinting ore deposits. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296473.

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Fyon, A. Geology and Ore Deposits of the Timmins District, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132291.

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Dilabio, R. N. W. Drift Prospecting: Geologists Use Glacial Sediments To Find Ore Deposits. Natural Resources Canada/CMSS/Information Management, 1990. http://dx.doi.org/10.4095/127977.

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Lougheed, H. D., M. B. McClenaghan, D. Layton-Matthews e M. I. Leybourne. Indicator minerals in fine-fraction till heavy-mineral concentrates determined by automated mineral analysis: examples from two Canadian polymetallic base-metal deposits. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328011.

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Exploration under glacial sediment cover is a necessary part of modern mineral exploration in Canada. Traditional indicator methods use visual examination to identify mineral grains in the 250 to 2000 µm fraction of till heavy-mineral concentrates (HMC). This study tests automated mineralogical methods using scanning electron microscopy to identify indicator minerals in the fine (&lt;250 µm) HMC fraction of till. Automated mineralogy of polished grains from the fine HMC enables rapid data collection (10 000-300 000 grains/sample). Samples collected near two deposits were used to test this method: four from the upper-amphibolite facies Izok Lake volcanogenic massive-sulfide deposit, Nunavut, and five from the Sisson granite-hosted W-Mo deposit, New Brunswick. The less than 250 µm HMC fraction of till samples collected down ice of each deposit contain ore and alteration minerals typical of their deposit type. Sulfide minerals occur mainly as inclusions in oxidation-resistant minerals, including minerals previously identified in each deposit's metamorphic alteration halo, and are found to occur farther down ice than the grains identified visually in the greater than 250 µm HMC fraction. This project's workflow expands the detectable footprint for certain indicator minerals and enhances the information that can be collected from till samples.

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Grunsky, E. C., B. Dubé, S. Hagemann e C. W. Brauhart. A global database of gold deposits: quantification of multi-element ore signatures. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296647.

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Fyon, J. A., e A. H. Green. Geology and Ore Deposits of the Timmins District, Ontario [Field Trip 6]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132290.

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Peredery, W. V. Geology and Ore Deposits of the Sudbury Structure, Ontario [Field Trip 7]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132342.

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McMillan, W. J. Chapter 7a: Geology and Ore Deposits of the Highland Valley Copper Mine. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132372.

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