Готові списки джерел за темами / Orebody

Добірка наукової літератури з теми "Orebody"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "Orebody"

1

Sun, Mingzhi, Fengyu Ren, and Hangxing Ding. "Optimization of Stope Structure Parameters Based on the Mined Orebody at the Meishan Iron Mine." Advances in Civil Engineering 2021 (July 9, 2021): 1–14. http://dx.doi.org/10.1155/2021/8052827.

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Based on the engineering background of the Meishan iron mine with sublevel caving (SLC) method, in this work, we adopted the method for identifying the shape of mined orebody (the original location in blasted slice), which analyzed and determined reasonable stope structure parameters. In the field test, the markers were arranged in the blasted slice, the mined orebody was measured by in situ tests, and reliable data were achieved. The shape of the mined orebody was obtained through this test when the width of drift was 6 m. The mined orebody’s shape was compared with the shape of the isolated extraction zone (IEZ), and the difference increased with increasing height. When the stope structural parameters were determined by the mined orebody, the larger the sublevel height was, the smaller the error was, which was compared with the method using ellipsoid arrangement theory to determine the stope structural parameters. Finally, the reasonable stope structure parameters were optimized. The sublevel height was 22 m, and the drift spacing was 20 m.
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2

Edgerton, David. "Reconstruction of the Red Dog Zn–Pb–Ba orebody, Alaska: implications for the vent environment during the mineralizing event." Canadian Journal of Earth Sciences 34, no. 12 (December 1, 1997): 1581–602. http://dx.doi.org/10.1139/e17-128.

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The Red Dog orebody (western Brooks Range, Alaska) contains reserves of approximately 150 Mt at an average grade of 16.2% Zn, 4.4% Pb, and 110 g/t Ag. Three mineralization facies can be identified within the orebody on the basis of mineralogical, textural, and paragenetic variations. The mineralization facies are termed breccia, transitional, and stratiform, representing a variation from a predominantly early epigenetic style of mineralization (breccia and transitional facies) to features that are more characteristic of syngenetic mineralization (stratiform facies). The primary relationship between the orebody and host rocks has been obscured by postmineralization deformation events that occurred during the Cretaceous Brooks Range orogeny. Therefore, reconstruction of the orebody was established using the mineralization facies model, determining local fault strain kinematics, drawing sections, and contouring the orebody's footwall, which is also a structural horizon. The reconstructed vent field is approximately 2400 m by 400 m, and contains four principal vents: the Hilltop, Main, West, and Aqqaluk. All vents are characterized by breccia facies mineralization that grades rapidly to transitional facies. The stratiform facies defines the periphery of the orebody. The development of the orebody began in the Upper Mississippian when early-stage metal-rich fluids were initially focused into the Main and West vents. All four vents were active during main-stage mineralization, which is characterized by extensive brecciation and sulfide-bearing barite rock and bitumen formation. Near the end of main-stage mineralization, the Aqqaluk vent became the main discharge zone, and fluid flow ceased entirely at the Hilltop vent. During late-stage mineralization, minor sulfide and sulfide-bearing and unmineralized barite rock were deposited. Upper Pennsylvanian strata do not host Zn–Pb mineralization, and they define the end of the ore-forming event at Red Dog. However, stratiform barite rock continued to be deposited, suggesting fluids were discharged at the sea floor until the end of the Pennsylvanian.
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3

Yang, Hui Xuan, Mei An, Dong Ye, and En Dong Zu. "Mineral Compositions and Textures of Jadeite Orebody and its Country Rock in Nammaw, Myanmar." Key Engineering Materials 512-515 (June 2012): 652–56. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.652.

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This paper studies the mineral compositions and textures of seven rock specimens from jadeite orebody and its country rock in Nammaw, Myanmar through XRD and observation of hand specimens and thin sections. The jadeite orebody is mainly composed of jadeite and minor zeolite minerals. Phlogopite schist and chromite-bearing amphibolite occur between the orebody and its country rock. The country rock is antigorite serpentinite. Outside of serpentinite is schist consisting of chlorite, hastingsite and polylithionite. The specimens of jadeite orebody show mainly following texture types: radiation texture, inequigranular crystalloblastic texture, granular-prismatic crystalloblastic texture, metasomatic texture and mylonitic texture. These textures indicate that the formation of the orebody is related to the intrusion of some fused mass or hydrothermal solution and then the orebody underwent dynamical metamorphism and hydrothermal metamorphism.
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4

Kim Cawood, Tarryn, and Abraham Rozendaal. "A Multistage Genetic Model for the Metamorphosed Mesoproterozoic Swartberg Base Metal Deposit, Aggeneys-Gamsberg Ore District, South Africa." Economic Geology 115, no. 5 (August 1, 2020): 1021–54. http://dx.doi.org/10.5382/econgeo.4725.

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Abstract The polymetamorphosed Swartberg Cu-Pb-Zn-Ag deposit in the Namaqua Metamorphic Province of South Africa is a major metal producer in the region, yet its genesis remains poorly understood. The deposit comprises several stratiform to stratabound units, namely the Lower Orebody and Dark Quartzite, the overlying Barite Unit, and the Upper Orebody, all of which are folded by an F2 isoclinal syncline and refolded by an open F3 synform. A discordant Garnet Quartzite unit surrounds the Upper Orebody in the F2 hinge, where it overprints the Lower Orebody and Barite Unit. The Lower Orebody comprises sulfidic, pelitic lenses with fine-grained pyrite, sphalerite, galena, and lesser pyrrhotite, hosted by sulfide-poor but magnetite- and barite-bearing siliceous rock. The overlying Barite Unit is poorly mineralized and grades from massive magnetite-barite close to the F2 hinge to distal laminated baritic schist and quartzite. The Dark Quartzite is the stratigraphic equivalent of the Lower Orebody and Barite Unit but comprises siliceous quartzite and schist, with lenses of conglomerate and minor Fe-Mn-Zn phases. The Upper Orebody displays rapid zonations from massive magnetite-rich iron formation in the F2 hinge, rich in coarse galena, pyrrhotite, and chalcopyrite, to sulfide-poor, magnetite-bearing schist and quartzite. The Garnet Quartzite is dominated by quartz and almandine garnet and mineralized with pyrite and chalcopyrite. Geochemical discriminant plots show that the Lower Orebody has a significant detrital component, whereas the Upper Orebody and Barite Unit are strongly zoned, with the greatest chemogenic component close to the F2 hinge. This corresponds to a deposit-scale metal zonation from the Cu-rich F2 hinge to more Pb- and then Zn-dominated areas. Mineral assemblages and paleoredox proxies suggest generally oxic conditions, with a more reduced signature close to the hinge and in the sulfidic Lower Orebody lenses. The Lower Orebody is interpreted as a mixed chemogenic-pelitic unit, with sulfides deposited on or near the seafloor during stage 1 hydrothermal activity. The sulfidic lenses formed from fine mud and clay deposited in quiet seafloor depressions, in which warm, dense, reducing, Pb-Zn-Ba–rich stage 1 brines accumulated, while the siliceous portions formed from higher-energy clastic sediments on aerated seafloor highs. The Barite Unit forms a baritic cap to the Lower Orebody, while the Dark Quartzite is their shallower-water equivalent. Thereafter, clastic sediment with lesser hydrothermal input was deposited during stage 2a exhalations, forming the poorly mineralized portions of the Upper Orebody. During stage 2b hydrothermal activity, hot Cu-Fe–rich fluids invaded part of the Upper Orebody, creating the highly chemogenic protolith to the well-mineralized, magnetite-rich portion. Associated hydrothermal alteration in a discordant subseafloor feeder zone created the Garnet Quartzite protolith. The F2 hinge thus corresponds closely to the original vent zone. Swartberg therefore resembles a deformed and metamorphosed Selwyn-type sedimentary exhalative deposit, with both proximal- (Upper Orebody, Garnet Quartzite) and distal-style (Lower Orebody) mineralization. The close association of these styles suggests that differences in the mineralizing fluids and depositional environment, rather than proximity to a vent, determine the deposit style.
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5

Li, Zhaopeng, Deyun Zhong, Zhaohao Wu, Liguan Wang, and Qiwang Tang. "Local Dynamic Updating Method of Orebody Model Based on Mesh Reconstruction and Mesh Deformation." Minerals 11, no. 11 (November 6, 2021): 1232. http://dx.doi.org/10.3390/min11111232.

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In this paper, to update the orebody model based on the given interpreted geological information, we present a local dynamic updating method of the orebody model that allows the interactive construction of the constraint deformation conditions and the dynamic updating of the mesh model. The rules for constructing deformation constraints based on the control polylines are discussed. Because only part of the model is updated, the updated mesh is effective and the overall quality is satisfactory. Our main contribution is that we propose a local dynamic updating method for the orebody model based on mesh reconstruction and mesh deformation. This method can automatically update a given 3D orebody model based on a set of unordered geological interpretation lines. Moreover, we implement a deformation neighborhood region search method based on the specified ring radius and a local constrained mesh deformation algorithm for the orebody model. Finally, we test the method and show the model update results with real geological datasets, which proves that this method is effective for the local updating of orebody models.
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6

Li, Zhaopeng, Deyun Zhong, Liguan Wang, Qiwang Tang, and Zhaohao Wu. "Mesh Processing for Snapping Feature Points and Polylines in Orebody Modeling." Mathematics 10, no. 15 (July 25, 2022): 2593. http://dx.doi.org/10.3390/math10152593.

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Анотація:
The 3D refinement modeling of the orebody provides an important guarantee for the estimation of the resources and reserves of an ore deposit. Implicit modeling techniques can effectively improve the efficiency of orebody modeling and facilitate the dynamic updating of the model. However, due to the problems of ambiguity and missing features during implicit surface interpolation and implicit surface reconstruction, the mesh models of orebodies obtained by means of implicit modeling techniques do not easily snap to the geological feature points and feature polylines obtained based on geological sampling data. In essence, all models are inaccurate, but geological sampling data are very useful and valuable, which should be accurately and effectively involved in the orebody modeling process. This would help to improve the reliability of resource estimation and mining design. The main contribution of this paper is the proposal of a method for accurately snapping orebody features after implicit modeling. This method enables the orebody model to snap accurately to the geological feature points and feature polylines and realizes the accurate clipping of the model boundary. We tested the method with real geological datasets. The results showed that the method is applicable and effective when the geological feature points and feature polylines are close to those of the orebody mesh model and the shape trend changes little, and the model can thus meet the practical application requirements of mines.
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7

Kepic, Anton W., Michael Maxwell, and R. Don Russell. "Field trials of a seismoelectric method for detecting massive sulfides." GEOPHYSICS 60, no. 2 (March 1995): 365–73. http://dx.doi.org/10.1190/1.1443772.

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An underground test of a seismoelectric prospecting method for massive sulfides was performed at the Mobrun Mine (Rouyn‐Noranda, Quebec) in June 1991. The method is based upon the conversion of seismic energy to high‐frequency pulses of electromagnetic radiation by sulfide minerals. The delay between shot detonation and detection of the electromagnetic radiation gives a one‐way traveltime for the acoustic wave to reach the zone of seismoelectric conversion, which when combined with P‐wave velocity allows the shot‐to‐ore zone distance to be calculated. A 0.22-kg explosive charge located within 50 m of the orebody provided the seismic excitation, and the resulting electromagnetic emissions were received by electric dipole and induction‐coil antennas. First‐arrival information from a 35‐shot survey above an orebody, the 1100 lens, provides firm evidence that short duration pulses of electromagnetic radiation are produced by the passage of acoustic waves through the orebody. The survey also demonstrated that seismoelectric conversions could be induced at shot‐to‐orebody distances of 50 m and detected at distances of up to 150 m from the orebody. Areas of seismoelectric conversion are highlighted in sections produced by plotting the position of seismic wavefronts during signal reception. The sections show anomalies that correlate with the known structure and location of the orebody and demonstrate the potential of using this seismoelectric phenomenon as an exploration tool.
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8

Carl, C., E. von Pechmann, A. Höhndorf, and G. Ruhrmann. "Mineralogy and U/Pb, Pb/Pb, and Sm/Nd geochronology of the Key Lake uranium deposit, Athabasca Basin, Saskatchewan, Canada." Canadian Journal of Earth Sciences 29, no. 5 (May 1, 1992): 879–95. http://dx.doi.org/10.1139/e92-075.

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The Key Lake deposit is one of several large, high-grade, unconformity-related uranium deposits located at the eastern margin of the Athabasca Basin in northern Saskatchewan, Canada. The deposit consists of the Gaertner orebody, now mined out, and the Deilmann orebody, which is presently being mined. In the past, radiometric dating efforts yielded an age of oldest ore-forming event of 1250 ± 34 Ma at the Gaertner orebody and 1350 ± 4 Ma at the Deilmann orebody. This unlikely age difference called for further investigation. Innovative preparation techniques were used to separate the paragenetically oldest U mineral, an anisotropic uraninite. Ore microscopy and U/Pb isotopic data show that the oldest event of uranium emplacement occurred simultaneously at the two orebodies, at 1421 ± 49 Ma. The primary ore-forming phase was followed by younger generations of U mineralization and periods of remobilization. Sm/Nd data of Key Lake uraninite form an isochron corresponding to an age of 1215 Ma. This is interpreted as the age of a uranium remobilization or a new mineralizing event. The lead found in the Athabasca Group above the Deilmann deposit and in galena appears to be a mixture of a common lead and radiogenic lead mobilized from the orebody over a time span of at least 1000 Ma.
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9

Li, Ying Ling, and Jian Guo Gao. "Research and Application of the 3D Mathematic Model of Ore-Body Based on Suppac Software - Yunnan White Cattle Factory Silver Polymetallic Mine." Advanced Materials Research 868 (December 2013): 84–87. http://dx.doi.org/10.4028/www.scientific.net/amr.868.84.

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Three-dimensional models of deposit are the foundation of realizing digital mineral deposit , with the aid of mining software Surpac,it can establish deposit database, the three dimensional model of the mining surface,,orebody and roadway of the yunnan white cow factory silver polymetallic deposit.The 3D model can show the vivid image of the mining topography and geomorphology, ore body position, gallery situation. The ore model of orebody grade founding by kriging can show the distribution change of orebody grade clearly, and finally estimate the amount of ore body. Comparing with the traditional estimation method of exploration report, we can find the estimation of mineral resources by software is accurate.
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10

Guo, Yanhui, and Yichen Miao. "Study on Stope Stability in Continuous Mining of Long-Dip, Thin Orebody by Room–Pillar Method." Sustainability 14, no. 15 (August 4, 2022): 9601. http://dx.doi.org/10.3390/su14159601.

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In order to analyze the stability of the stope under continuous mining with the room–pillar method for a kind of orebody with a long inclination, but not deep mining, this paper takes the room–pillar method for the continuous mining of a long-inclination orebody in the Mengnuo Lead–Zinc Mine, Yunnan Province as the research background. On the basis of the analysis of the stope mechanical model of a long, inclined, thin orebody with room-and-pillar mining, based on numerical simulation, the nature of the change in stress, displacement and the plasticity zone of the roof and pillar during continuous mining along the inclination are systematically analyzed. The results show that as the mining depth increases, the roof subsidence of the stope in the middle of the current operation increases. With the continuous mining of the lower middle section, the roof displacement of the stope will continue to increase with the subsequent mining of the middle section until the end of all stope operations, and the roof displacement of the stope has an obvious cumulative effect. The stress on the roofs and pillars increases with the gradual downward movement of the mining in each level, and the distribution of the plastic zone also expands. It shows that the stope structural parameters that are set according to shallow mining cannot fully meet the requirements of stability and safety in mining a deeper orebody. Therefore, for the mining of a non-deep orebody with a greater tendency to extend, the structural parameters of a shallow stope should not simply be used in the mining of a deeper orebody, but the pillar size should be appropriately increased or the spacing between the room and pillar should be reduced to ensure the stability and safety of the continuous stope.
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Дисертації з теми "Orebody"

1

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.

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The sublevel caving mining method is a mass production method with potentially very low operational costs. The success of this method is dependent on, among other factors, the cavability of the orebody and the overlying rock mass. However, caving of the surrounding rock mass also results in deformations in the cap rock as well as on the ground surface above the orebody being mined. From this follows that any existing infrastructure on the ground surface must be relocated as not to be affected by the mining-induced deformations.This thesis work was undertaken to bring about a better understanding of the rock mass behavior in the cap rock of non-daylighting orebodies, with particular application to the Printzsköld orebody as part of the LKAB Malmberget Mine. Rock testing, field observations and underground mapping was conducted to characterize the rock mass in the caving environment. A methodology for identifying the caving front based on seismic monitoring data was derived by studying the Fabian orebody (which has caved to surface), and using laser scanning data for validation. The methodology was then applied to the Printzsköld orebody to identify the caving front.Numerical modeling was performed for various scenarios of the rock mass as mining proceeded. Modeling included (i) stress analysis to understand stress changes and their effects on the rock mass behavior, (ii) discontinuum numerical modeling to quantify the influence of large-scale geological structures on the cave progression, and (iii) discontinuum cave modeling to simulate possible cave mechanisms in the cap rock more explicitly. Laser scanning together with seismic event data were used to calibrate the numerical models.The numerical simulation results showed that as mining progresses, the cap rock and hangingwall were exposed to stress changes that resulted in yielding. Two failure mechanisms were predominantly at play (i) shear failure (dominant in the cap rock) and (ii) tensile failure (dominant in the hangingwall). The presence of the large-scale structures affected thenearfield stresses through slip along the cave boundaries. The effect of the structures on the far field stresses were less significant.Discontinuum modeling to explicitly simulate failure and caving involved simulating the rock mass as a jointed medium using Voronoi tessellations in 2D, and bonded block modeling (BBM) in 3D. Both the 2D and the 3D modeling results showed fair agreement when comparing the inferred boundary of the seismogenic zone, with that identified from seismic monitoring data. Predictive numerical modeling was conducted for future planned mining to assess future cave development in the cap rock. The results from 3D modeling indicated that cave breakthrough for the Printzsköld orebody is expected when mining the 1023 m level, corresponding to approximately year 2022, as per current mining plans. The 2D model was non-conservative with cave breakthrough predicted to occur when mining the 1109 m level, corresponding to the year 2028.The estimated boundary between the seismogenic and yielded zones, as defined in the Duplancic and Brady conceptual model of caving, was coinciding with, or was close to, the cave boundary in the Printzsköld orebody. This may imply that in some areas the yielded zone was not present and that the Duplancic and Brady model may not be universally applicable. Additional work is required to verify this indication, as well as to fine-tune the modeling methodology.
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2

Francis, 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.

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3

Francis, 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.

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Анотація:
This thesis proposes a morphological complexity index for use in classifying orebodies. Formulated and tailored for application on underground steep clipping narrow base metal orebodies from Inco Limited's Manitoba Division, the complexity index was proved transferable to the base metal deposits of Inco Limited's Ontario Division. Thus it appears that the index could be applied to various styles of mineralization and orebody morphology.
The 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.
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4

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.

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5

Yavuz, Sinem. "Seismic characterization of Volcanogenic massive sulfides – the Semblana orebody, Portugal." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/48.

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The exploration at Neves Corvo was further progressed through specialised elastic property measurements and PRA processing. Unambiguous imaging of the known VMS deposit was achieved through pre-stack imaging, followed by the calibration of seismic data with sonic and pseudo logs, which was an integral part of the volumetric interpretation. Quantitative interpretation of the Semblana deposit’s was performed with acoustic and elastic impedance inversion and AVO analysis, which demonstrated the unique nature of massive sulfide response.
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6

Moses, Mokete. "The deportment of manganese in the Gamsberg East orebody South Africa." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/53531.

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The Gamsberg East orebody is the least studied orebody of the Gamsberg zinc (Zn) deposit. The Gamsberg Zn deposit is a largest undeveloped Broken Hill-type deposit, which is well known for relatively low zinc grade as well as manganese (Mn) being a problem and penalty element. The occurrence of manganese within the sphalerite crystal lattice is one of the reasons for the lack of mining development over the past three decades. The recent metallurgical test works of the Gamsberg East ore showed that alabandite floats faster than sphalerite and this adds to the Mn penalty factor. Alabandite (MnS) was first reported as trace concentrations, but it was most recently found in anomalous concentrations in the Gamsberg East orebody. Up to 16 %wt alabandite occurs within the pelitic schist of the Gams Formation, and concentrations below 2 %wt occur within the top half of meta-pelite ore. The occurrence of alabandite is also associated with thicker or well developed portions of the ore horizon, which is also associated with manganese enrichment. The model of formation for alabandite is similar to that of sphalerite and Fe-sulphides during metal-sulphide formation in the Gamsberg Zn deposit. Alabandite is therefore pre-metamorphic and its formation is controlled by change in redox water conditions from chemogenic to detrital facies, sulphur fugacity, change in pH and hydrothermal fluids with temperature less than 300 °C, rich in manganese and iron but poor in zinc. Manganese is also hosted in silicate and oxide minerals, such as by pyrophanite, jacobsite, franklinite, amphiboles, micas, pyroxenes/pyroxenoids, and garnets.
Dissertation (MSc)--University of Pretoria, 2015.
Geology
MSc
Unrestricted
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7

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.

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Most of the high-grade ores have been depleted globally, thus the effective processing of the low-grade and complex ores require a comprehensive mineral characterization through the process mineralogy/ geometallurgical approaches. 30-70 % of the total energy consumption in mining comes from the comminution step in mineral processing. This study, is aimed to investigate how different mineral domains in Lappberget, Garpenberg affect the grinding energy and throughput of an autogenous grinding mill (AG) and how blending different mineralogical domains will have an effect on throughput. The results were obtained through automated mineralogy using a Zeiss Sigma 300 VP at the QANTMIN scanning electron microscope (SEM) laboratory (Luleå University of Technology) and an in-house grindability test developed by Boliden Mineral AB. There is approximately a multiple of three times differences in the amount of energy consumption and throughput between the hardest and softest mineralogical domains. This difference is attributed to mineral composition of the individual domains and mineral characteristics. Blending different samples indicate that a higher throughput can be achieved and one possible hypothesis is that the harder minerals act as grinding media.
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8

McKeown, 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.

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9

Blakeman, 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.

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10

Hoffmann, 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.

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The Broken Hill deposit, Aggeneys, is a metamorphosed stratiform Cu-Pb-Zn-Ag sulphide deposit situated in the mid-Proterozoic supracrustal sequence of the Bushmanland Subprovince in the Namaqualand Metamorphic Complex. The deposit comprises two superposed orebodies, each consisting mainly of massive sulphide lenses and iron formation which are hosted within a metapelitic schist close to major quartzite horizons. This study is concerned with the tectonically lower orebody (LOB). The iron formation is magnetite-rich and contains varying proportions of (Fe,Mn)-rich silicates (garnet, amphibole, olivine, orthopyroxene, pyroxenoid), quartz and Cu-Pb-Zn-sulphides. These minerals occur in mm- to 5 cm-thick bands and are often traceable over tens of metres. The well preserved banding is considered to represent bedding. Five different varieties of silicate-rich mesobands in the iron formation can be distinguished based on the predominant mineral assemblage: (a) amphibole-olivine-quartz +/- garnet, (b) amphibole-quartz, (c) garnet-apatite-quartz +/- amphibole, (d) garnet-apatite-quartzorthopyroxene, (e) pyroxferroite-quartz +/- amphibole and (f) quartz. These rocks all contain magnetite, and Ba-rich biotite is common but is not always present.
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Книги з теми "Orebody"

1

Hejmanowski, Ryszard. Czasoprzestrzenny opis deformacji górotworu wywołanych filarowo-komorowa ̜eksploatacja ̜złoża pokładowego: Modelling in time and space of deformation caused by open stope mining in a layered orebody. Kraków: Wydawnictwa AGH, 2004.

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2

BHP Iron Ore Pty Ltd., ed. Orebody 18 environmental management programme. [Australia]: BHP Iron Ore Pty Ltd, 1996.

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3

BHP Iron Ore Pty Ltd., ed. Orebody 18: Consultative environmental review. [Perth, WA]: BHP Iron Ore Pty, 1996.

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4

1948-, Peters S. G., and Geological Survey (U.S.), eds. Oreshoot zoning in the Carlin-type Betze orebody, Goldstrike Mine, Eureka County, Nevada. [Menlo Park, CA] : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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5

Open Pit Mine Planning and Design, 3rd Edition,: CSMine and MicroModel Software Packages and Orebody Case Examples. Taylor & Francis Group, 2013.

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6

Whiteley, R. J. Geophysical Case Study of the Woodlawn Orebody, N. S. W. , Australia: The First Publication of Methods and Techniques Tested over a Base Metal Orebody of the Type Which Yields the Highest Rate of Return on Mining Investment with Modest Capital Requirements. Elsevier Science & Technology Books, 2016.

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7

Wegelius, Jakob. Die Spione von Oreborg. Sauerländer, 2003.

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8

Tethered Submarine to Seek Value Materials on the Seabed: Finding Rich Orebeds at Depths Less Than 300 Meters. Independently Published, 2019.

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Частини книг з теми "Orebody"

1

Mariano, A. C., and A. J. Sousa. "Classification on a Complex Orebody: A Geostatistical Approach." In Geostatistics Wollongong’ 96, 755–66. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5726-1_10.

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2

Capello, G., M. Guarascio, A. Liberta, L. Salvato, and G. Sanna. "Multipurpose Geostatistical Modelling of a Bauxite Orebody in Sardinia." In Quantitative Geology and Geostatistics, 69–92. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3383-5_4.

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3

Skvortsova, T., H. Beucher, M. Armstrong, J. Forkes, A. Thwaites, and R. Turner. "Simulating the Geometry of a Granite-Hosted Uranium Orebody." In Geostatistics Rio 2000, 85–99. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1701-4_7.

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4

Liu, Yajing, and Mei Li. "Orebody Model Compression Research Based on Decimal Morton Code." In Communications in Computer and Information Science, 724–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34041-3_100.

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5

Chimimba, L., and J. E. Smiles. "Problems of mining around a sill intersecting the Shangani orebody, Zimbabwe." In African Mining ’91, 267–77. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3656-3_26.

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6

Min, Wei, Zhao Pengda, and Sun Jianhe. "Orderly Rule of Spatial Distribution of Mineralization and Location Prediction to Orebody." In Mathematical Geology and Geoinformatics, 89–92. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429070891-9.

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7

Grossou-Valta, M., K. Adam, D. C. Constantinides, J. M. Prevosteau, and E. Dimou. "Mineralogy of and potential beneficiation process for the Molai complex sulphide orebody, Greece." In Sulphide deposits—their origin and processing, 119–33. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0809-3_8.

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8

Isaksson, H., and L. C. Andersson. "Case study on metal-stressed vegetation from a copper orebody, Kiruna region, northern Sweden." In Remote sensing: an operational technology for the mining and petroleum industries, 35–42. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-010-9744-4_4.

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9

Heriawan, Mohamad Nur, Loya Jirga, and Anton Perdana. "“Horse-Shoe” Cu-Au Porphyry Orebody Modeling Based on Blasthole Data Using Unfolding Technique." In Lecture Notes in Earth System Sciences, 735–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32408-6_159.

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10

Guibal, D., M. Humphreys, H. Sanguinetti, and P. Shrivastava. "Geostatistical Conditional Simulation of a Large Iron Orebody of the Pilbara Region in Western Australia." In Geostatistics Wollongong’ 96, 695–706. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5726-1_5.

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Тези доповідей конференцій з теми "Orebody"

1

Turner, G., I. M. Mason, J. E. Hargreaves, and A. Wellington. "Borehole radar surveying for orebody delineation." In 8th International Conference on Ground Penetrating Radar, edited by David A. Noon, Glen F. Stickley, and Dennis Longstaff. SPIE, 2000. http://dx.doi.org/10.1117/12.383577.

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2

Zhao, Zengyu, Mao Pan, Zhongbo Gao, Zhihu Zhang, and Yi Jin. "Dynamic updates of 3D orebody surface models." In 2010 18th International Conference on Geoinformatics. IEEE, 2010. http://dx.doi.org/10.1109/geoinformatics.2010.5568022.

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3

Shiels, Andrew. "Unearthing the Black Rock orebody with sublevel caving." In Caving 2022: Fifth International Conference on Block and Sublevel Caving. Australian Centre for Geomechanics, Perth, 2022. http://dx.doi.org/10.36487/acg_repo/2205_101.

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4

Wang, Zhen, Shaoming Zhu, and Kaijie Feng. "Predicting and visualizing of the orebody from drilling data." In 2016 International Conference on Progress in Informatics and Computing (PIC). IEEE, 2016. http://dx.doi.org/10.1109/pic.2016.7949524.

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5

Adam, Erick, Bernd Milkereit, Grant Arnold, and Réjean Pineault. "Seismic response of the Bell Allard orebody, Matagami, Quebec." In SEG Technical Program Expanded Abstracts 1996. Society of Exploration Geophysicists, 1996. http://dx.doi.org/10.1190/1.1826726.

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6

Jing Yongbin, Wang Liguan, Huang Junxin, and Chen Jianhong. "3D visualization system for orebody modeling and grade estimation." In 2010 2nd International Conference on Computer Engineering and Technology. IEEE, 2010. http://dx.doi.org/10.1109/iccet.2010.5485799.

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7

Seo, Hoon, Hua Wang, Yaoguo Li, and Thomas Monecke. "AUTOMATING OREBODY MODELING USING COST-EFFECTIVE ADAPTIVE ALPHA-SHAPE CONSTRUCTION." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-382909.

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8

Bailey, R. C., and Stephen Cheesman. "A multigrid solver for inductive limit EM responses in orebody delineation." In SEG Technical Program Expanded Abstracts 1996. Society of Exploration Geophysicists, 1996. http://dx.doi.org/10.1190/1.1826615.

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9

Liu Yajing, Mei Li, and Chen Xingtong. "Research and development of Geodetic Space Management Information System of Unstratified Orebody." In 2011 International Conference on Electric Information and Control Engineering (ICEICE). IEEE, 2011. http://dx.doi.org/10.1109/iceice.2011.5778124.

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10

du Pisani, P. "Using Borehole Radar to Image a Pothole in the Merensky Platinum Orebody." In Near Surface 2006 - 12th EAGE European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609.201402648.

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Звіти організацій з теми "Orebody"

1

Hoy, T., N. Berg, G. D. Delaney, J. T. Fyles, D. Mcmurdo, and P. W. Ransom. Chapter 3: the Sullivan Orebody. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132368.

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2

Harvey, S. E., and K. M. Bethune. Context of the Deilmann orebody, Key Lake mine, Saskatchewan. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2007. http://dx.doi.org/10.4095/223770.

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3

Mwenifumbo, C. J. Mise-a-La-Masse Experiments in the Maclean Extension Orebody. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/122406.

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4

Stewart, P. W. Geology and Genesis of Granitoid Clasts in the Maclean Extension Transported Orebody. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/122400.

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5

Moreton, C., and P. F. Williams. Structural and Stratigraphic Relationship At the BZone Orebody, Heath Steele Mines, Newcastle, New Brunswick. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120629.

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6

Ames, D. E., and C. Taylor. Geology of the West Anomaly orebody, Ruttan volcanic-hosted massive sulphide deposit, Proterozoic Rusty Lake belt. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207581.

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7

Ross, K. V., K. M. Dawson, C. I. Godwin, and L. Bond. Major lithologies and alteration of the Ajax East Orebody, a sub-alkalic copper-gold porphyry deposit, Kamloops, south-central British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134195.

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8

Leitch, C. H. B., and R. J. W. Turner. Preliminary Field and Petrographic Studies of the Sulphide - Bearing Network Underlying the western Orebody, Sullivan Stratiform Sediment - Hosted Zn - Pb Deposit, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133559.

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9

Turner, E. C. Mesoproterozoic Borden Basin, northern Baffin Island. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/321825.

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Анотація:
The unmetamorphosed and nearly undeformed late Mesoproterozoic Borden Basin on northern Baffin Island exhibits sag, rift, and foreland-basin-like phases. A thin, partly subaqueous basal basalt is overlain by mature shallow-marine quartz arenite, upward-deepening siltstone and shale (marking the beginning of rifting), a complex suite of rift-delineated carbonate units containing two dramatic internal unconformities, and a flysch-molasse-like succession containing evidence of sediment derivation from the Grenville Orogen. Geochronological data indicate that deposition of most of the succession took place ca. 1100 to 1050 Ma. One of the carbonate intervals, Nanisivik Formation, is the main host of regional Zn-Pb showings including the past-producing Nanisivik orebody, which formed in the late Mesoproterozoic from low-temperature fluids, and which was emplaced under strong structural and stratigraphic controls. Minimal postdepositional deformation is limited to the emplacement of mafic dykes ca. 720 Ma and repeated reactivation of basement-rooted normal faults.
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10

Leybourne, M. I., J. M. Peter, M A Schmidt, D. Layton-Matthews, A. Voinot, and L. Mathieu. Geochemical evidence for a magmatic contribution to the metal budget of the Windy Craggy Cu-Co(±Zn) volcanogenic massive-sulfide deposit, northwestern British Columbia. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328018.

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Анотація:
Volcanogenic massive-sulfide (VMS) deposits may have had metal contributions from magmatic degassing and leaching of footwall rocks. The Windy Craggy Cu-Co-Zn VMS deposit in northwestern British Columbia may include magmatic contributions, based on laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) of fluid inclusions (enriched in Sb, Sn, and Bi) and lithogeochemistry. Sulfide-mineral trace-element abundances in the massive-sulfide orebody, underlying stockwork zone, gold zone, and altered and unaltered mafic rock and argillite were analyzed by LA-ICP-MS. Elevated Au, W, As, Bi, Sb, Se, Te, Tl, Ag, Co, and Mo contents occur within the gold and/or stockwork zones. Increasing 'magmatic metals' with increasing Co/Ni values suggest direct magmatic contribution to the deposit. Covariation of Co with these so-called 'magmatic elements' indicates that it, too, may be of magmatic origin, sourced via fluids exsolved from a crystallizing magma; however, evidence from the composition of rocks and sulfide minerals from Windy Craggy and other VMS deposits suggests that there is probably no meaningful distinction between hydrothermal leaching and direct magmatic contributions and that most - if not all - fluids that form VMS deposits should be termed 'magmatic-hydrothermal'.
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