Готові списки джерел за темами / Gold distribution

Добірка наукової літератури з теми "Gold distribution"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Gold distribution"

1

Ghatak, J., B. Sundaravel, K. G. M. Nair, and P. V. Satyam. "MeV Gold Ion Induced Sputtered Nanoparticles from Gold Nanostructures: Dependence of Incident Fluxand Temperature." Journal of Nanoscience and Nanotechnology 8, no. 8 (August 1, 2008): 4318–21. http://dx.doi.org/10.1166/jnn.2008.an56.

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The high-energy and heavy-ion induced sputtered particles from nanostructures under various conditions can result in variety of size distributions. 1.5 MeV Au2+ ions induced sputtering from isolated gold nanostructures deposited on silicon substrate have been studied as a function of incident ion flux (dose rate) and the sputter particle catcher at low temperature. At higher fluxes, a bimodal distribution of the sputtered particles has been observed. Cross-sectional transmission electron microscopy and Rutherford backscattering spectrometry measurements showed that the sputter particle size distribution depends on morphology at surface and interfaces. The results for the size distribution from a catcher at low temperature showed the less agglomeration of ejected clusters on the catcher grids, resulting in the lower-disperse size distribution.
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2

Yu, Hai-Chin, Chia-Ju Lee, and Tung-Li Shih. "Weekday effects on gold: Tokyo, London, and New York markets." Banks and Bank Systems 11, no. 2 (July 2, 2016): 33–44. http://dx.doi.org/10.21511/bbs.11(2).2016.04.

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Using the probability distribution approach, this study explores the weekday effects among Tokyo, London, and New York gold markets. Friday shows positive and significant higher returns, whereas Tuesday shows negative and significant lower returns than other weekdays. The weekend effects still exist, while Monday effects disappear. On average, London was found to have the highest returns, followed by New York and Tokyo. The peak and width estimations show that Tokyo has the highest volatility, while London and New York have similar volatility distributions, implying a similar preference behavior of investors. It also implies that arbitrage opportunities between London and New York could be trivial. After estimating the distribution from Monday to Friday across the three markets, we found that the distribution of return shows a leftward shifting in London and New York, meaning that the weekend effect is starting earlier from Wednesday and Thursday in London and New York. Some strategy implications are valuable to traders or hedgers Vol. 11, Iss: 2, pp.33-44.
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3

Sawyer, N. J., and W. A. Fairweather. "Optimising Distribution in Barrel Gold Plating." Transactions of the IMF 75, no. 4 (January 1997): 158–62. http://dx.doi.org/10.1080/00202967.1997.11871164.

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4

Poitras, Geoffrey. "The distribution of gold futures spreads." Journal of Futures Markets 10, no. 6 (December 1990): 643–59. http://dx.doi.org/10.1002/fut.3990100607.

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5

Sie, S. H., S. Murao, and G. F. Suter. "Trace element distribution in native gold." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 109-110 (April 1996): 633–38. http://dx.doi.org/10.1016/0168-583x(95)00983-3.

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6

ZHU, L. L., and C. B. YANG. "PARTICLE DISTRIBUTION AND NUCLEAR STOPPING IN Au+Au COLLISIONS AT $\sqrt{s_{NN}}=200~{\rm GeV}$." Modern Physics Letters A 22, no. 15 (May 20, 2007): 1105–12. http://dx.doi.org/10.1142/s0217732307021895.

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The transverse momentum distribution of charged particles is investigated for gold–gold collisions at [Formula: see text]. A simple parametrization is suggested for the particle distribution based on the nuclear stopping effect. The model can fit very well in both the transverse momentum distributions at different pseudo-rapidities and the pseudo-rapidity distributions at different centralities. The ratio of rapidity distributions for peripheral and central collisions is calculated and compared with the data.
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7

Lee, Chia-Ju, Tuan-Nam Lai, Chang-Chou Chiang, and Hai-Chin Yu. "Dynamic conditional correlation and volatility distributions in Tokyo, London, and New York gold markets." Investment Management and Financial Innovations 16, no. 4 (December 4, 2019): 146–55. http://dx.doi.org/10.21511/imfi.16(4).2019.13.

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This study investigates the volatility and co-movement of gold prices across Tokyo, London, and New York gold markets. Using a dynamic conditional correlation (DCC) model, the authors estimate the cross-correlation and volatility of gold in each pair among three markets over the period from 1993 to 2012. Both the time-varying correlations and realized distributions are explored. After estimating the DCC as well as the corresponding distributions of the DCC among the three markets, the results suggest that: (i) the DCC probability distribution of London and New York shows a higher volatility associated with a higher DCC value; (ii) the DCC probability distribution between London and New York as well as between Tokyo and London both express the similar and overlapping pattern, implying that these markets are almost equal, and neither dominates; and (iii) New York exhibits a spillover effect of Tokyo’s variance, while the latter does not influence New York’s variance. The shapes of the distributions show that the distribution of high DCC is wider than that of low DCC, meaning that risk increases with the dynamic correlation. The implications of these gold DCC probability distributions encourage investors to diversify their global portfolios and manage latent risks in different gold markets effectively. Besides, the volatility-threshold DCC model suggests that the correlations are more sensitive to extreme volatility thresholds in London and New York markets, whereas the correlation is significantly affected by all levels of volatility at 50%, 75%, 90%, and 95% thresholds in Tokyo and London markets. Investors may not be able to diversify portfolio risk by choosing London and New York at the same time once gold becomes volatile as a high correlation is observed in the extreme thresholds.
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8

Shimada, Nobutaka, Tomoki Nakamura, Yasuo Morinaga, and Yoshihito Shikama. "Invisible Gold from the Hishikari Epithermal Gold Deposit, Japan: Implication for Gold Distribution and Deposition." Resource Geology 55, no. 2 (June 2005): 91–100. http://dx.doi.org/10.1111/j.1751-3928.2005.tb00231.x.

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9

Nielsen, S. H. H., G. A. Partington, D. Franey, and T. Dwight. "3D mineral potential modelling of gold distribution at the Tampia gold deposit." Ore Geology Reviews 109 (June 2019): 276–89. http://dx.doi.org/10.1016/j.oregeorev.2019.04.012.

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10

Bienert, Ralf, Franziska Emmerling, and Andreas F. Thünemann. "The size distribution of 'gold standard' nanoparticles." Analytical and Bioanalytical Chemistry 395, no. 6 (September 15, 2009): 1651–60. http://dx.doi.org/10.1007/s00216-009-3049-5.

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Дисертації з теми "Gold distribution"

1

Aylmore, Mark G. "Distribution and agglomeration of gold in arsenopyrite and pyrite." Thesis, Curtin University, 1995. http://hdl.handle.net/20.500.11937/149.

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The form and location of gold in the structure of arsenopyrite and pyrite minerals, and the mechanisms for the mobility agglomeration of gold in arsenopyrite during thermal treatment, have been studied using a combination of Rietveld X-ray diffraction refinement, Convergent Beam Electron Diffraction (CBED) and Atomic Location by Channelling Enhanced Microanalysis. The basic structure of all the arsenopyrite compositions studies, has been shown to be monoclinic P2(subscript)1/c, regardless of the variation in stoichiometry. An increase in the arsenic to sulfur ratio in the natural arsenopyrites was found to be associated with an increase in unit cell dimensions accompanied by expansions within the iron-centred octahedra along the [101] direction of the monoclinic cell and concommitant contractions of the octahedra in the (101) plane. There was no obvious relationship between variation in stoichiometry and structure of arsenopyrite which could provide information as to possible substitution of gold in its structure. However, atomic displacements caused by twinning or disorder, may help to incorporate gold.The synthesis of auriferous arsenopyrites showed that gold has to be in an ionic form to be taken up in the structure. The form of the gold species affects the distribution of gold in the structure, being chemically zoned when derived from a dichloro complex and more evenly distributed when derived from a hydrosulfido complex. It is suggested that rapid crystallisation, with resultant displacement faults along the b-axis, may contribute to higher concentrations of gold in the natural arsenopyrite structure. Electron probe microanalysis showed a possible slight iron-deficiency in some of the auriferous arsenopyrite grains analysed. However, the errors in the analyses were too high to provide conclusive evidence of gold substitution in the iron sites, as has been proposed in the literature.Analyses of natural and synthetic pyrites showed no deviations in structural parameters which could indicate possible substitution of gold or other impurities within the structure.Electron channelling experiments showed that gold was located on the sulfur sites in pyrite. In arsenopyrite, there was some evidence for gold located on the iron sites, however, most gold was interstitial, probably situated between the octahedra. This location is probably facilitated by the presence of the displacement faults as observed by CBED in the synthetic auriferous arsenopyrite.Breakdown of arsenopyrite under thermal treatment was topotactic along its b-axis, which converts to the a-axis in the pyrrhotite structure, following a reconstruction mechanism based on the preferential removal of arsenic over sulfur. Gold was visually recorded exsolving from the arsenopyrite structure and agglomerating as liquid metal globules as the arsenopyrite was chemically altered during thermal treatment under the Transmission Electron Microscopy electron beam. Gold became mobile on the decomposition of arsenopyrite, but this was not observed until a temperature of approximately 470 degrees celsius was reached. Above the temperature both solid solution and particulate gold became mobile. The interaction of arsenic vapour and gold reduced the melting point of gold.The observations on the effects of arsenic residence time, and the relative mobility of solid solution and particulate gold during the thermal decomposition of auriferous arsenopyrite and pyrite, have significant implications for improved industrial extraction of gold from these minerals.
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2

Aylmore, Mark G. "Distribution and agglomeration of gold in arsenopyrite and pyrite." Curtin University of Technology, School of Applied Chemistry, 1995. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=11407.

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Анотація:
The form and location of gold in the structure of arsenopyrite and pyrite minerals, and the mechanisms for the mobility agglomeration of gold in arsenopyrite during thermal treatment, have been studied using a combination of Rietveld X-ray diffraction refinement, Convergent Beam Electron Diffraction (CBED) and Atomic Location by Channelling Enhanced Microanalysis. The basic structure of all the arsenopyrite compositions studies, has been shown to be monoclinic P2(subscript)1/c, regardless of the variation in stoichiometry. An increase in the arsenic to sulfur ratio in the natural arsenopyrites was found to be associated with an increase in unit cell dimensions accompanied by expansions within the iron-centred octahedra along the [101] direction of the monoclinic cell and concommitant contractions of the octahedra in the (101) plane. There was no obvious relationship between variation in stoichiometry and structure of arsenopyrite which could provide information as to possible substitution of gold in its structure. However, atomic displacements caused by twinning or disorder, may help to incorporate gold.The synthesis of auriferous arsenopyrites showed that gold has to be in an ionic form to be taken up in the structure. The form of the gold species affects the distribution of gold in the structure, being chemically zoned when derived from a dichloro complex and more evenly distributed when derived from a hydrosulfido complex. It is suggested that rapid crystallisation, with resultant displacement faults along the b-axis, may contribute to higher concentrations of gold in the natural arsenopyrite structure. Electron probe microanalysis showed a possible slight iron-deficiency in some of the auriferous arsenopyrite grains analysed. However, the errors in the analyses were too high to provide conclusive evidence of gold substitution in the iron sites, as has been ++
proposed in the literature.Analyses of natural and synthetic pyrites showed no deviations in structural parameters which could indicate possible substitution of gold or other impurities within the structure.Electron channelling experiments showed that gold was located on the sulfur sites in pyrite. In arsenopyrite, there was some evidence for gold located on the iron sites, however, most gold was interstitial, probably situated between the octahedra. This location is probably facilitated by the presence of the displacement faults as observed by CBED in the synthetic auriferous arsenopyrite.Breakdown of arsenopyrite under thermal treatment was topotactic along its b-axis, which converts to the a-axis in the pyrrhotite structure, following a reconstruction mechanism based on the preferential removal of arsenic over sulfur. Gold was visually recorded exsolving from the arsenopyrite structure and agglomerating as liquid metal globules as the arsenopyrite was chemically altered during thermal treatment under the Transmission Electron Microscopy electron beam. Gold became mobile on the decomposition of arsenopyrite, but this was not observed until a temperature of approximately 470 degrees celsius was reached. Above the temperature both solid solution and particulate gold became mobile. The interaction of arsenic vapour and gold reduced the melting point of gold.The observations on the effects of arsenic residence time, and the relative mobility of solid solution and particulate gold during the thermal decomposition of auriferous arsenopyrite and pyrite, have significant implications for improved industrial extraction of gold from these minerals.
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3

Manohar, Nivedh Harshan. "Quantitative imaging of gold nanoparticle distribution for preclinical studies of gold nanoparticle-aided radiation therapy." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54877.

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Gold nanoparticles (GNPs) have recently attracted considerable interest for use in radiation therapy due to their unique physical and biological properties. Of interest, GNPs (and other high-atomic-number materials) have been used to enhance radiation dose in tumors by taking advantage of increased photoelectric absorption. This physical phenomenon is well-understood on a macroscopic scale. However, biological outcomes often depend on the intratumoral and even intracellular distribution of GNPs, among other factors. Therefore, there exists a need to precisely visualize and accurately quantify GNP distributions. By virtue of the photoelectric effect, x-ray fluorescence (XRF) photons (characteristic x-rays) from gold can be induced and detected, not only allowing the distribution of GNPs within biological samples to be determined but also providing a unique molecular imaging option in conjunction with bioconjugated GNPs. This work proposes the use of this imaging modality, known as XRF imaging, to develop experimental imaging techniques for detecting and quantifying sparse distributions of GNPs in preclinical settings, such as within small-animal-sized objects, tissue samples, and superficial tumors. By imaging realistic GNP distributions, computational methods can then be used to understand radiation dose enhancement on an intratumoral scale and perhaps even down to the nanoscopic, subcellular realm, elucidating observed biological outcomes (e.g., radiosensitization of tumors) from the bottom-up. Ultimately, this work will result in experimental and computational tools for developing a better understanding of GNP-mediated dose enhancement and associated radiosensitization within the scope of GNP-aided radiation therapy.
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4

Polito, Paul A. "Exploration implications predicted by the distribution of carbon-oxygen-hydrogen gases above and within the Junction gold deposit, Kambalda, Western Australia /." Title page, table of contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09php769.pdf.

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5

Coxon, Brian Duncan. "Lateritisation and secondary gold distribution with particular reference to Western Australia." Thesis, Rhodes University, 1993. http://hdl.handle.net/10962/d1005586.

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Lateritisation is associated with tropical climates and geomorphic conditions of peneplanation where hydromorphic processes of weathering predominate. Laterites are products of relative (residual) and absolute(chemical) accumulation after leaching of mobile constituents. Their major element chemistry is controlled by the aluminous character of bedrock and drainage. Bauxitisation is characterised by residual gibbsite neoformation and lateritisation, by both residual accumulation and hydromorphic precipitation of goethite controlled by the redox front at the water table. The laterite forms part of a weathering profile that is underlain by saprock, saprolite, the mottled zone and overlain by a soil horizon. The secondary gold in laterites has its source invariably with mineralised bedrock. The distribution of secondary gold is controlled by mechanical eluviation and hydromorphic processes governed by organic, thiosulphate and chloride complexing. The precipitation of secondary gold is controlled by pH conditions, stability of the complexing agent and ferrolysis. Gold-bearing laterites are Cainozoic in age and are best developed on stable Archean and Proterozoic cratons that have suffered epeirogenesis since lateritisation. Mechanical eluviation increases in influence at the expense of hydromorphic processes as a positive function of topographic slope and degradation rate. Gradients greater than 10⁰ are not conducive for lateritisation, with latosols forming instead. High vertical degradation rates may lead to the development of stone lines. In the Western Australian case, post-laterite aridification has controlled the redistribution of secondary gold at levels marked by stabilisation of the receding palaeowater table. Mineable reserves of lateritic ore are located at Boddington, Westonia and Gibson toward the south-west of the Yilgarn Block. A significant controlling variable appears to be the concentration of chloride in the regolith. Based on the Boddington model, the laterite concentrates the following elements from bedrock gold lodes: i) Mo, Sb, W, Hg, Bi and Au as mobile constituents. ii) As and Pb as immobile constituents. Geochemical sampling of ferruginous lag after bedrock and laterite has provided dispersed anomalies that are easily identifiable. "Chalcophile corridors" up to 150 km in length are defined broadly by As and Sb but contain more discrete anomalies of Bi, Mo, Ag, Sn, W, Se or Au, in the Yilgarn Block. The nature of the weathered bedrock, the tabular distribution of secondary gold ore deposition and the infrastructural environment lends the lateritic regolith to low cost, open-cut mining. The western Australian lateritic-gold model perhaps can be adapted and modified for use elsewhere in the world.
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6

Sibbick, Steven John Norman. "The distribution and behaviour of gold in soils in the vicinity of gold mineralization, Nickel Plate mine, southern British Columbia." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28862.

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Sampling of soils and till are conventional methods of gold exploration in glaciated regions. However, the exact nature of the residence sites and behaviour of gold within soil and till are poorly known. A gold dispersion train extending from the Nickel Plate mine, Hedley, southwest British Columbia, was investigated in order to determine the distribution and behaviour of gold within soils developed from till. Three hundred and twelve soil, till and humus samples (representing LFH, A, B and C horizons) were collected from fifty-two soil pits and thirty-four roadcut locations within the dispersion train. Soil and till samples were sieved into four size fractions; the resultant -212 micron (-70 mesh) fraction of each sample was analysed for Au by FA-AAS. Humus samples were ground to -100 micron powder and analysed for Au by INAA. Based on the analytical results, each LFH, A, B and C horizon was subdivided into anomalous and background populations. Detailed size and density fraction analysis was carried out on soil profiles reflecting anomalous and background populations, and a mixed group of samples representing the overlap between both populations. Samples were sieved to six size fractions; three of the size fractions (-420+212, -212+106, -106+53 microns) were separated into two density fractions using methylene iodide and analysed for Au by FA-AAS. The Au content of the -53 micron fraction was analysed by FA-AAS and cyanide extraction - AAS. Results indicate that the Au content of soil profiles increase with depth while decreasing with distance from the minesite. Heavy mineral concentrates and the light mineral fraction Au abundances reveal that dilution by a factor of 3.5 occurs within the till over a distance of 800 metres. However, free gold within the heavy mineral fraction is both diluted and comminuted with distance. Recombination of size and density fractions indicate that the Au contents of each size fraction are equivalent; variation in Au abundance is not observed with a change in grain size. Seventy percent of the Au in the -53 micron fraction occurs as free gold. Chemical activity has not altered the composition of gold grains within the soil profiles. Compositional and morphological differences between gold grains are not indicative of glacial transport distance or location within the soil profile. Relative abundances of gold grains between sample locations can be used as an indicator of proximity to the minesite. The sampling medium with the best sample representivity and contrast between anomalous and background populations is the -53 micron (-270 mesh) fraction of the C horizon. Geochemical soil sampling programs in the vicinity of the Nickel Plate mine should collect a minimum mass of 370 grams of -2000 micron (-2 mm) soil fraction in order to obtain 30 grams of the -53 micron fraction.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
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7

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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8

Armitage, Michael Graham. "The occurrence and distribution of gold in shear zones at Renco Mine, Zimbabwe." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281878.

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9

Sener, A. K. "Characteristics, distribution and timing of gold mineralisation in the Pine Creek Orogen, Northern Territory, Australia /." Connect to this title, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0102.

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10

Wedin, Francis. "Controls on the characteristics, timing and distribution of epithermal gold deposits in western Turkey." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/46336/.

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A study of epithermal gold mineralisation has been conducted across the Western Anatolian Volcanogenic and Extensional Zone (WAVE) in western Turkey. A Bulk Leach Extractable Gold stream sediment survey was undertaken, in addition to rockchip sampling and analysis of drill core, and mapping. Clay samples from the Simav Fault were dated, geophysical data over the study area analysed, and new GIS data was examined. Hitherto unknown epithermal gold deposits –including Akçapınar, Kőprűbaşı and Yaylabayır - have been discovered during the progress of this largely field based study, as well as a north-east striking gold deposit belt, named the Kozak Gold Corridor. Kőprűbaşı is among a number of jasperoid-hosted deposits which represent a new deposit analogue in WAVE, termed “Demirci-Type”. This research has produced a new geological model for the formation of epithermal gold deposits in the WAVE Zone. The model links a south-west migration of the subduction zone in WAVE during the Miocene with similar patterns of gold deposition, with the latter occurring in at least one distinct episode between 19 and 23Ma. Dacitic to rhyolitic volcanics acted as highly favourable host rocks for gold deposition, while ophiolitic mélange and Pan-African schist rocks are shown to provide a secondary crustal enrichment of gold, and the main structural controls are observed to be east-west P shears and north west-south east R1 shears. The Simav Fault is shown to be mineralised and a crucial deep conduit for gold deposits in its hangingwall. Tilting of graben and half-graben blocks in WAVE accounts for different degrees of uplift and erosion between deposits of similar age, such as Kızılçukur and Kızıltepe. Future gold exploration in the region should be focussed on targeting similar parameters to this model. The Kozak Gold Corridor and Sındırgı Gold Corridor are deemed prospective for further discoveries.
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Книги з теми "Gold distribution"

1

Poell, James G. Residual cyanide distribution in a neutralized gold leach heap: Final report. Bozeman, Mont: Reclamation Research Unit, Montana State University, 1994.

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2

Puente, Henry. Mother lode or fool's gold: The marketing and distribution of U.S. Latino films. Mishawaka, Ind: The Victoria Press, 2009.

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3

Puente, Henry. Mother lode or fool's gold: The marketing and distribution of U.S. Latino films. Mishawaka, Ind: The Victoria Press, 2009.

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4

Puente, Henry. Mother lode or fool's gold: The marketing and distribution of U.S. Latino films. Mishawaka, Ind: The Victoria Press, 2009.

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5

Quartzsite gold atlas: A comprehensive guide to the history, character, and distribution of placer and lode gold from the southern Dome Rock Mountains, Arizona. [Place of publication not identified]: Rock Doc Publications, 2013.

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6

Goddard, Kimball E. Composition, distribution, and hydrologic effects of contaminated sediments resulting from the discharge of gold milling wastes to Whitewood Creek at Lead and Deadwood, South Dakota. Rapid City, S.D: Dept. of the Interior, U.S. Geological Survey, 1989.

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7

Stephen, Prince. A new pot of gold: Hollywood under the electronic rainbow, 1980-1989. New York: C. Scribner's, 2000.

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8

Stephen, Prince. A new pot of gold: Hollywood under the electronic rainbow, 1980-1989. New York: Charles Scribners', 1999.

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9

Robert, Hickson Charles, and Thompson Earl A, eds. Ideology and the evolution of vital institutions: Guilds, the gold standard, and modern international cooperation. Boston: Kluwer Academic Publishers, 2001.

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10

Robert, Hickson Charles, ed. Ideology and the evolution of vital economic institutions: Guilds, the gold standard, and modern international cooperation. Boston: Kluwer Academic Publishers, 2000.

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Частини книг з теми "Gold distribution"

1

Müller, F. "Gold Deposits and the Archaeological Distribution of Gold Artefacts." In Prehistoric Gold in Europe, 183–98. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-1292-3_13.

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2

Crocket, J. H. "Distribution of gold in the Earth’s crust." In Gold metallogeny and exploration, 1–36. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4613-0497-5_1.

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3

Crocket, J. H. "Distribution of gold in the Earth’s crust." In Gold Metallogeny and Exploration, 1–36. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2128-6_1.

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4

Blenkinsop, Tom. "The Fractal Distribution of Gold Deposits: Two Examples from the Zimbabwe Archaean Craton." In Fractals and Dynamic Systems in Geoscience, 247–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-07304-9_19.

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5

Han, Yoon Chung. "Gold content and distribution in hydrothermal alteration zones of the Haenam area, southwestern Korea." In Mineral Deposit Research: Meeting the Global Challenge, 1141–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_291.

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Klemm, Rosemarie, and Dietrich Klemm. "Sequential and Spatial Distribution of Gold Mining Sites in the Egyptian and Nubian Eastern Deserts." In Natural Science in Archaeology, 601–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-22508-6_7.

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7

Djenchuraeva, A. V., D. D. Djenchuraev, and A. D. Gonchar. "Distribution of gold in the Paleozoic sedimentary strata of the Kyrgyz range (northern Tien-Shan)." In Mineral Deposit Research: Meeting the Global Challenge, 1305–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_332.

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8

Karunananda, Dayani, Ramya Ranathunga, and Wathsala Abeysinghe. "60Co gamma irradiation-induced mutation in vegetatively propagated Philodendron erubescens 'Gold'." In Mutation breeding, genetic diversity and crop adaptation to climate change, 386–98. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0040.

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Abstract Philodendron erubescens 'Gold', an ornamental plant and a popular climber with brilliant greenish yellow leaves, is used in indoor gardening and landscaping. It is commonly propagated through vegetative cuttings, thus incorporation of new traits through conventional breeding is impracticable. As commercial floriculture always demands novel varieties, this study was carried out to induce mutation in P. erubescens 'Gold' leaves using gamma- ray irradiation. Rooted cuttings (n = 200) of P. erubescens 'Gold' were subjected to 70 Gy, 100 Gy and 150 Gy gamma-rays and recovered on a propagator. Surviving shoots were transferred to pots. Regenerated shoots were multiplied vegetatively and ten M1 lines were maintained as M1-1 to M1-10 for 12 generations (M1V12) to evaluate growth and morphological variations along with their genetic stability. Of all 70 Gy and 100 Gy treated cuttings, 24 and two, respectively, survived after 6 months. Most of the irradiated plants had lost regeneration ability except for two M1 plants, which also showed comparatively reduced growth (one leaf in 45 days). Only one regenerated M1 plant showed morphological variation in its leaves and it was multiplied and maintained as lines. Several variations, including characteristics of leaves (shape, size, colour), stems (internodal length and branching) and plant stature, were observed among M1 lines and in subsequent vegetative generations. Leaves had three different colour patches, but neither the colour nor its distribution pattern was uniform or stable. The M1-4 line showed the highest stability of colour distribution in leaves; the colour composition of its leaves ranged as 0-10% dark bluish green, 60-90% strong yellow green and 10-30% brilliant greenish yellow throughout the 12 generations. This study demonstrates that gamma irradiated P. erubescens 'Gold' line M1-4 can be a promising mutant to develop as a new Philodendron cultivar.
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9

Leblanc, Marc. "Platinum-Group Elements and Gold in Ophiolitic Complexes: Distribution and Fractionation from Mantle to Oceanic Floor." In Ophiolite Genesis and Evolution of the Oceanic Lithosphere, 231–60. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3358-6_13.

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10

Tsunekane, Masafumi, Kyosuke Yoshimi, and Kouichi Maruyama. "Attempt to Control Spatial Distribution of Nano-Gold Particles Using Nanoporous Surfaces of FeAl Single Crystal." In Advanced Materials Research, 185–88. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-463-4.185.

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Тези доповідей конференцій з теми "Gold distribution"

1

Cox, Shaun. "Securing Our Water Future for the Gold Coast." In Eighth Annual Water Distribution Systems Analysis Symposium (WDSA). Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40941(247)1.

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2

Yelin, Dvir. "Estimating gold nanoparticle distribution in cell cultures (Conference Presentation)." In Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XV, edited by Alexander N. Cartwright, Dan V. Nicolau, and Dror Fixler. SPIE, 2018. http://dx.doi.org/10.1117/12.2288891.

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3

Lee, Hanmin, Gildong Kim, Sehchan Oh, and Changmu Lee. "A study on energy storage system for Gold Line of LA Metro." In 2009 Transmission & Distribution Conference & Exposition: Asia and Pacific. IEEE, 2009. http://dx.doi.org/10.1109/td-asia.2009.5356828.

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4

Junussov, Medet. "CHARACTERISTICS, DISTRIBUTION AND MORPHOGENESIS OF GOLD-BEARING SULFIDE MINERALS IN THE GOLD BLACK SHALE DEPOSIT OF BAKYRCHIK." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/1.1/s01.081.

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5

Thiart, C., C. M. Doucouré, and M. J. de Wit. "Tracing South African Gold Distribution by Weight of Evidence Modelling." In 7th SAGA Biennial Technical Meeting and Exhibition. European Association of Geoscientists & Engineers, 2001. http://dx.doi.org/10.3997/2214-4609-pdb.143.6.4.

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6

Raffy, Philippe, Youbing Yin, Daniela Gompelmann, Eric Hoffman, Maren Schuhmann, John Newell, Juerg Tschirren, Ralf Eberhardt, Susan Wood, and Felix J. F. Herth. "Distribution of fissure integrity and emphysema measurements by GOLD stages." In Annual Congress 2015. European Respiratory Society, 2015. http://dx.doi.org/10.1183/13993003.congress-2015.oa1764.

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7

Luk, Alex T., Farouk Nouizi, Michael Marks, Turkay Kart, and Gultekin Gulsen. "Monitoring gold nanoparticle distribution with high resolution using photo-magnetic imaging." In SPIE BiOS, edited by E. Duco Jansen. SPIE, 2016. http://dx.doi.org/10.1117/12.2213852.

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8

Moriuchi, T., S. Uehara, and K. Imamura. "Correlation distribution of quaternary sequences obtained from modified binary gold sequences." In IEEE International Symposium on Information Theory, 2003. Proceedings. IEEE, 2003. http://dx.doi.org/10.1109/isit.2003.1228396.

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9

Kanaev, A. T., A. T. Smagali, T. A. Dippel, and A. R. Rinar. "DISTRIBUTION OF GOLD ORE BY SIZE CLASS USING PARTICLE SIZE ANALYSIS." In Международная научно-практическая конференция почвоведов, агрохимиков и земледелов, посвященная 90-летию почвоведения на Урале "Почвы Урала и Поволжья: экология и плодородие". Уфа: Башкирский государственный аграрный университет, 2021. http://dx.doi.org/10.31563/3-6-6-2021-67-70.

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10

Wang, Kexin, Xiang Sang, Shuanghuang Xiao, Hongqin Yang, Yiru Peng, Shusen Xie, and Jianling Chen. "Interaction of gold nanorods with ovarian cells: toxicity, uptake and intracellular distribution." In Eleventh International Conference on Information Optics and Photonics (CIOP 2019), edited by Hannan Wang. SPIE, 2019. http://dx.doi.org/10.1117/12.2548784.

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Звіти організацій з теми "Gold distribution"

1

Gosselin, P., and B. Dubé. Gold deposits of Canada: distribution, geological parameters and gold content. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2005. http://dx.doi.org/10.4095/220380.

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2

Gosselin, P., and B. Dubé. Gold deposits of the world: distribution, geological parameters and gold content. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2005. http://dx.doi.org/10.4095/220379.

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3

Maurice, Y. T. Distribution and Origin of Alluvial Gold in Southwest Gaspesie, Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120693.

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4

Lydon, J. W., I. R. Jonasson, and K. A. Hudson. The distribution of gold in the TEA barite deposits, Yukon Territory. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120173.

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5

Boily-Auclair, E., P. Mercier-Langevin, P. S. Ross, and D. Pitre. Lithological and structural controls on the nature and distribution of gold at the LaRonde Zone 5 project, Doyon-Bousquet-LaRonde gold camp, Abitibi, Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/313631.

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6

Henderson, P. J., and M. Roy. Distribution and character of gold in surface till in the Flin Flon greenstone belt, Saskatchewan. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/205200.

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7

Kerr, D. E., and R. D. Knight. An overview of gold grain distribution and geochemistry of till, Yellowknife Greenstone Belt, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213170.

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8

Bielinskyi, A., S. Semerikov, V. Solovieva, and V. Soloviev. Levy distribution parameters as precursors of crisis phenomena. Видавничий будинок Мелітопольської міської друкарні, 2019. http://dx.doi.org/10.31812/123456789/3597.

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In spite of popularity of the Gaussian distribution in financial modeling, we demonstrated that Levy’s stable distribution is more suitable due to its theoretical reasons and analysis results. We study the possibility of construction indicators- precursors relying on one of the most power-law tailed distributions - Levy’s stable distribution. Here, we apply moving window based procedure for calculation of Levy’s parameters - a - stability and /?- skewness for daily values of Dow Jones Industrial Average (from 1 March 2000 to 28 March 2019), the gold price (from 1 April 1968 to 8 May 2019) and Brent crude oil price (from 2 January 1986 to 6 May 2019) which show their effectiveness as indicators of crisis states. For the construction of the indicators, were selected time series of and, accordingly, for oil. Dow Jones’ time series has the period from 2 January 1920 to 2019. We conclude that a and /3 parameters of Levy’s stable distribution of the observed assets, which demonstrate characteristic behavior for crash and critical states, can serve as an indicator-precursors of the unstable states.
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9

Palmer, E. M., C. R. M. McFarlane, D. R. Lentz, and H. Falck. Gold mineralization in the Cantung W-skarn deposit, Northwest Territories: an examination of distribution, mineralogy, and petrogenesis. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296480.

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10

Kerr, D. E. Distribution and characteristics of gold grains in till, Yellowknife Greenstone Belt and Drybones Bay area, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213534.

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