Dissertations / Theses on the topic 'Orebody'
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Banda, Sraj Umar. "Caving mechanisms for a non-daylighting orebody." Doctoral thesis, Luleå tekniska universitet, Geoteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-63994.
Full textFrancis, Helen. "Orebody complexity in geological control over selective mining." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0006/MQ44008.pdf.
Full textFrancis, Helen. "Orebody complexity in geological control over selective mining." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20204.
Full textThe complexity classification was designed to aid in geologic control and subsequently improve mining method performance. Motivated by an industry wide move from selective mining to bulk mining, to increase productivity and improve safety. It is intended that development and application of an orebody complexity index will increase the understanding of geology and prevent the sacrifice of selectivity, minimizing dilution and ore loss. With the advent of automation, simplification in mining is necessary and thus more intelligent design and control vital. This thesis offers one means by which MDPPC (Mine Design, Planning and Production Control) could be further integrated with geological understanding to achieve such an end.
The thesis provides explanation of how such a complexity index can be used to understand mining method performance and be used for more successful mine design.
Llana-Rodriguez, A. H. "Orebody modelling and open pit optimization using exploration data." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355441.
Full textYavuz, Sinem. "Seismic characterization of Volcanogenic massive sulfides – the Semblana orebody, Portugal." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/48.
Full textMoses, Mokete. "The deportment of manganese in the Gamsberg East orebody South Africa." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/53531.
Full textDissertation (MSc)--University of Pretoria, 2015.
Geology
MSc
Unrestricted
Lood, Stark Gustav. "A process mineralogy study of grinding characteristics for the polymetallic orebody, Lappberget Garpenberg." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-86988.
Full textMcKeown, Daniel J. "The lithology, structure and genesis of the Iron Duchess orebody, Middleback Ranges, South Australia /." Title page, table of contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09S.B/09s.bm157.pdf.
Full textBlakeman, Robert James. "The compositions and routes of the fluids generating the Navan giant base-metal orebody." Thesis, University of Glasgow, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392450.
Full textHoffmann, Dennis. "Aspects of the geology, geochemistry and metamorphism of the lower orebody, Broken Hill deposit, Aggeneys." Master's thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/22396.
Full textGray, Matthew Dean 1933. "Gold mineralization in the Black Cloud #3 carbonate replacement orebody, Leadville Mining District, Lake County, Colorado." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/558083.
Full textGustin, Mae Sexauer. "A PETROGRAPHIC, GEOCHEMICAL AND STABLE ISOTOPE STUDY OF THE UNITED VERDE OREBODY AND ITS ASSOCIATED ALTERATION, JEROME, ARIZONA." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/187546.
Full textRickard, Jason H. "Petrological and mineralogical study of Cu-Ni-PGE-bearing ores within the 100 orebody, Copper Cliff North mine, Sudbury, Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0012/MQ52404.pdf.
Full textFord, Colin Victor. "The integration of petrologic and isotopic data from the Boulder Conglomerate to determine the age of the Navan orebody, Ireland." Thesis, University of Glasgow, 1996. http://theses.gla.ac.uk/1134/.
Full textRickard, Jason H. Carleton University Dissertation Earth Sciences. "Petrological and mineralogical study of Cu-Ni-PGE-bearing ores within the 100 orebody, Copper Cliff North mine, Sudbury, Ontario." Ottawa, 2000.
Find full textTipe, Luis Alberto Martinez. "Strategic project evaluation for open pit mining ventures using real options and allied econometric techniques." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/48334/1/Luis_Martinez_Thesis.pdf.
Full textRasmeni, Sonwabile. "Lithostratigraphic correlation, mineralogy and geochemistry of the lower manganese orebody at the Kalagadi Manganese Mine in the Northern Cape Province of South Africa." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/d1016155.
Full textRentzelos, Theofanis. "Numerical Investigation of Rock Support Arches." Thesis, Luleå tekniska universitet, Geoteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76698.
Full textLotfolah, Hamedani Mohammad. "Orebody modelling for exploration: the western mineralisation, Broken Hill." Thesis, 2011. http://hdl.handle.net/2440/67195.
Full textThesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2011
Finch, Adrian Patrick. "A Geostatistical study of the copper orebody within the Phalaborwa complex." Thesis, 2015. http://hdl.handle.net/10539/17255.
Full textLoidl, Gernot C. "The Elura Orebody: a multidisciplinary study investigating geochemical mineralogical & geometallurgical ore characteristics." Thesis, 2012. http://hdl.handle.net/2440/82375.
Full textThesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2012
Kaviua, Sheron Tjiuavioye. "Geostatistical evaluation of the eastern ore field one (EF1) orebody, Rosh Pinah zinc mine, Namibia." Thesis, 2018. https://hdl.handle.net/10539/25723.
Full textThe geometry, size and quality of a deposit are key parameters required for decision-making regarding mining methods, capital investments or divestments, economic viability and processing methods. The dissertation uses a quantitative approach to assess three geological modelling methods for orebody geometry. It applies Principal Components Analysis (PCA) in order to understand the variability and correlation in the data. The dissertation aims to determine the significance of increasing the composite size to 3 m for grade estimation and to estimate the tonnes and grades of the Eastern Ore Field 1 in-situ resource as on 31 December 2016. A MineSight, a Leapfrog and a hybrid of MineSight and Leapfrog modelling method were assessed, aiming to reduce the modelling time. The Minesight and Leapfrog hybrid model is recommended for modelling complex sedimentary exhalative deposits. The PCA was carried out using Matlab. Based on the correlation of 0.998, the first principal component increases with increasing Ag, Zn and Pb and it correlates most strongly with Ag. The second principal component increases with Zn, with a correlation of 0.985. With a correlation of 0.927, the third component increases with Mg. A 3 m composite size is recommended for estimating EF1 because the generated block-model estimates have lower means, standard deviations, variances and numbers of extreme outliers. The 3 m composite size is closer to the SMU at Rosh Pinah, and produces a better block estimate than 1.5 m composites, the later gives more tonnes and higher grade due to the volume-variance effect, which ultimately leads to overestimation of the mineral deposit. The total in-situ EF1 resource estimated using the Ordinary Kriging interpolation method as on 31 December 2016 was 814,100 tonnes at 8.58% Zn, 3.19% Pb and 79.22 ppm Ag.
MT 2018
Stewart, Peter William. "Geology, geochemistry, geochronology and genesis of granitoid clasts in breccia-conglomerates, MacLean extension orebody, Buchans, Newfoundland /." 1985. http://collections.mun.ca/u?/theses,119284.
Full textChanderman, Lisa. "Application of stochastic orebody simulation techniques to assess geological volume and grade uncertainty for gold reef deposits." Thesis, 2017. http://hdl.handle.net/10539/23453.
Full textThis dissertation discusses the use of stochastic orebody modelling techniques for assessing geological uncertainty associated with gold mineralisation at Geita Gold Mine in Tanzania, and proposes a practical methodology that can be applied to similar studies. As part of the pre-feasibility stage studies for underground mining at Geita, stochastic simulations were required to assess the geological uncertainty associated with isolating (modelled) high grade lenses that occur within the known low grade mineralisation currently targeted for underground mining. Two different simulation techniques are applied in this research: Sequential Indicator Simulation to generate lithofacies realisations from which to assess ore category boundaries and shapes for use in quantifying volumetric uncertainty; and Direct Block Simulations to simulate gold grade realisations from which to assess grade uncertainty. This study identified potential upside and downside mine planning scenarios for volumes and total metal content from the ore category and grade simulations respectively. The findings of the results demonstrated that the high grade zones are much more broken up and discontinuous than the currently modelled high grade shape. The current business case uses a probabilistic high grade shape based on a single grade indicator and a probability choice of 50 percent as the threshold for high grade. The results of the study consider a simulation of possible outcomes based on the same threshold grade indicator and hence quantify the uncertainty or total geological risk. This geological risk may be introduced to mine designs, production schedules and NPV predictions The stochastic workflow developed can be applied to analogous deposit types to assess the risk related to geological uncertainty. The work includes a description of practical considerations to be accounted for when applying the techniques.
MT 2017
Schwarz, M. A. "Mineralogy and distribution of talc associated with Cu Mineralisation: A study of talc alteration in the Northern 3500 Orebody, Mount Isa, Queensland." Thesis, 2004. http://hdl.handle.net/2440/113487.
Full textCopper mineralisation within the Mount Isa Mines deposit is associated with variable talc alteration. An understanding of the mineralogy and distribution of talc alteration associated with the northern 3500 orebody is important for future mining processes and could potentially be used for exploration targets around the Mount Isa area. Mineralogical and geochemical investigations have shown one major type of talc mineralogy throughout the entire 3500 orebody. Variations in colour and texture are visible macroscopically and microscopically but there are no distinctive differences in mineralogy. The talc has minor iron (~4 wt% FeO), probably due to the moderate iron within the Mount Isa system. The same type of moderately Fe-rich talc is found within the 1100 oreobody (Waring, 1990), suggesting a similar style of talc alteration extends beyond the 3500 orebody. The distribution of talc is reliant on the fluid pathway. The altering fluids have used selected faults within the 3500 orebody as pathways. The NSFW fault which roughly defines the eastern limit of mineralisation in the 3500 orebody is typically a strong wide shear zone with talc fill and is recognised as being a possible pathway for the fluids. Talc is dominant on the footwall of the 3500 orebody from south of 6700mN and dominant on the hangingwall, north of 6700mN. Within the siliceous core where mineralisation is at its greatest concentrations, talc is only located within faults. Outside the siliceous core where copper mineralisation is lower, talc alteration is present within the rocks and varies in quantity. The talc alteration has occurred after the formation of dolomite and pyrite. However, the timing of the talc alteration in relation to the copper mineralisation remains unknown. Four methods of determining the most accurate and cost effective method for talc abundance estimates within the 3500 orebody are evaluated. The most effective method is through the calculation of stoichiometric equations from XRF assay data. These calculations can be used to create an accurate talc 3D numerical model that enables the distribution and numerical quantity of the talc to be viewed throughout the copper mine.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2004
Johnson, Russell Douglas. "Orebody characterisation and structural features that govern copper and cobalt mineralisation in the eastern limb of the Lufilian Arc, Democratic Republic of Congo." Thesis, 2015. http://hdl.handle.net/10539/16918.
Full textThe Central African Copperbelt is located in the Lufilian Arc which straddles the border between Zambia and the Democratic Republic of Congo (DRC). Mineralisation of the cupriferous Arc is found in basal Neoproterozoic Katangan Supergroup sedimentary rocks, which in DRC are termed the Mines Series Subgroup. The Mines Series is divided into the dolomitic and carbonaceous GRAT, DStrat RSF, RSC, SD and CMN units. The composition of the units is homogeneous across the Lubumbashi district and potentially across the Katangan basin. This study focussed on the Kinsevere and Ruashi deposits in the Lubumbashi district, which are approximately 50 km apart. The study confirmed that relative eustatic sea level changes resulted in the non-deposition of the RSF and RSC stratigraphic units at Kinsevere. Sedimentation was followed by early pervasive potassic alteration and silicification at the diagenetic stage whilst a magnesian dolomitisation event resulted in alteration of potassic feldspars and recrystallisation of carbonates. Albitisation was veincontrolled and late-stage scapolitisation altered evaporitic nodules. Finally, haematisation by late iron-rich fluids circulating through the Roan Group strata resulted in oxidation of sulphides. The structural analysis of Kinsevere Central pit indicates E-W and N-S shortening whereas the Ruashi pit 1 deposit underwent NE-SW and N-S shortening. Initial shortening, associated with Kolwezian deformation (D1), resulted in the formation of NE-thrust folds and a primary set of joints. The Kolwezian deformation event (D2), reoriented the shortening direction from E-W to N-S, creating interference folds and possibly a second set of joints. The final phase in the structural evolution of the Kinsevere and Ruashi deposits was late-stage brittle deformation (faulting). Mineralisation was a multi-stage process. Disseminated chalcopyrite and carrollite were deposited from formation waters during diagenesis in a stable basin environment. Chalcopyrite, carrollite, chalcocite and bornite are predominantly located at the base of the DStrat, whereas chalcopyrite and pyrite dominate the stratigraphically higher portions of the deposits. Hypogene vein mineralisation began at the syn- to late- orogenic stage with carrollite and chalcopyrite in beddingparallel veins. Possible changes in the compression direction created the perpendicularly oriented veins that host chalcopyrite, carrollite, bornite, covellite, digenite and chalcocite. Finally a late stage of chalcopyrite and pyrite deposition occurred in and around the evaporites, indicating a strong correlation between mineralisation, evaporites and scapolitisation. iii Near-surface supergene alteration of hypogene sulphide ores, resulted in Cu-Co carbonates and oxides, such as malachite, azurite, cobaltiferous malachite, chrysocolla, kolwezite and sphaerocobaltite being deposited in vugs and pore spaces above the meteoric water line. Faulted and brecciated zones tend to have deeper supergene alteration. Between the sulphide facies at depth and the supergene oxide facies at surface is a transition zone which marks the depth to which oxidation has penetrated. Sulphur isotope analysis from the Kinsevere and Ruashi deposits suggests a sulphur contribution from a continental Red-Bed sedimentary source and from an evaporitic source.
Sloane, Lomar. "Sublevel open stoping : design of the O640, L651 and N659 sub-level open stopes in the 3000 orebody of the Mount ISA copper mines, Queensland, Australia." Diss., 2011. http://hdl.handle.net/2263/26206.
Full text- Faulting
- Grade Contours
- Existing Development
- Surrounding Fill masses
- Rock Mechanics
- Reserves and Scheduling
- Development and Drilling
- Production and Firing (Blasting)
- Ventilation
- Services
- Filling
- Economic Analysis
Dissertation (MEng)--University of Pretoria, 2011.
Mining Engineering
unrestricted