Relevant bibliographies by topics / Silver deposits

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  2. Dissertations / Theses
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Academic literature on the topic 'Silver deposits'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Silver deposits"

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Novoselov, Konstantin, Elena Belogub, Ekaterina Palenova, and Ivan Blinov. "Silver minerals in the Unkur sandstone-hosted Cu deposit (Transbaikalia region, Russia)." Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry 196, no. 3 (July 1, 2020): 221–30. http://dx.doi.org/10.1127/njma/2020/0192.

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The Kodar-Udokan ore district in the Transbaikalia region of Russia contains numerous sandstone-hosted Cu deposits and occurrences with variable Ag content. The Unkur deposit with possible resources of 62 million tonnes at 0.53 % Cu and 38.6 g/t Ag is hosted in metasedimentary rocks of the Udokan Group of 2.2–2.6 Ga in age. The bornite–chalcopyrite ores from the deposit are characterized by disseminated, lenticular, pocket, and veinlet textures and also contain numerous silver minerals including native silver, mercurian silver (up to 37.4 wt% Hg), stromeyerite, mckinstryite, balkanite, and naumannite. Isomorphic silver is also hosted in bornite (up to 3.8 wt%) and chalcocite (up to 1.8 wt% Ag). The microscopic relationships between ore minerals and stability of stromeyerite indicate almost synchronous formation of native silver, mercurian silver, and stromeyerite at a temperature of < 100 °C. The presence of Ag–Hg minerals is a characteristic feature of ores from the Cu–Ag deposits hosted in sedimentary and carbonate-sedimentary rocks.
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Hirata, A., P. Baluk, T. Fujiwara, and D. M. McDonald. "Location of focal silver staining at endothelial gaps in inflamed venules examined by scanning electron microscopy." American Journal of Physiology-Lung Cellular and Molecular Physiology 269, no. 3 (September 1, 1995): L403—L418. http://dx.doi.org/10.1152/ajplung.1995.269.3.l403.

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The century-old histological technique of silver nitrate staining has proven to be extremely useful for visualizing endothelial cell borders and localizing endothelial gaps, but the significance of the staining is still not fully understood. To gain some insight into what silver nitrate stains, we developed a method that enabled us to use scanning electron microscopy with backscattered and secondary electron imaging to examine silver staining at endothelial cell borders of venules of the rat tracheal mucosa. We found that in normal venules, silver lines followed the smooth contour of cell borders. However, 1 min after endothelial permeability was increased by substance P, cell borders were irregular and displaced from the silver lines by as much as 4.3 microns, and the lines were accompanied by three types of silver deposits. Most common (46% of total) were annulus-shaped silver deposits that surrounded endothelial gaps. These deposits averaged 1.5 microns in width, were positioned symmetrically across cell borders, and were located at a depth of 0.3 micron beneath the luminal surface. Many endothelial gaps were partitioned into multiple pores (mean, 2.4) by fingerlike processes of endothelial cells. Surprisingly, the gaps occupied only 5.4% of the total area of the silver deposits and constituted 0.15% of the luminal surface of the leaky postcapillary venules. A second type of silver deposit (19% of total) was positioned asymmetrically with respect to the cell border and marked sites where endothelial cell margins still overlapped but appeared to be vertically separated by obliquely oriented gaps. A third type marked gaps at three-cell junctions; these were no more abundant than deposits elsewhere around the cell perimeter, suggesting that three-cell junctions were not unusually leaky sites. We conclude that silver nitrate marks endothelial cell borders and outlines endothelial cell gaps by staining an element of intercellular junctions. The annular shape of many silver deposits around gaps suggests that junctional elements in the apposing cells are separated during gap formation but are still present at the gap perimeter.
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De la Nuez Colon, D., and M. Santa Cruz Pacheco. "Gold and gold-bearing volcanogenic massive sulphide deposits of the Central Cuba." Proceedings of higher educational establishments. Geology and Exploration, no. 3 (February 28, 2021): 27–37. http://dx.doi.org/10.32454/0016-7762-2020-63-3-27-37.

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Background. Volcanogenic massive sulphide deposits (VMS) are the most important sources of Cu and Zn; they account for a large share of the world production of Pb, Ag, Au, Se, Te, Bi and Sb, as well as small amounts of many other metals. The polymetallic VMS deposits of economic value of varying degrees are known in the rocks of the Los Pasos Cretaceous Formation, Cuba.Aim. To show the potential of the Cretaceous volcanic deposits of Central Cuba for gold, silver, copper, zinc and lead deposit prospecting.Materials and methods. The study characterises the San Fernando, Independencia, Antonio, Los Cerros VMS deposits and the Boca del Toro and El Sol ore occurrences located in the Los Pasos Formation. The similarities and differences in the mineral and elemental composition and structures of the ores of these objects are described, which underlie the assessment of their economic importance.Results. The latitudinal zoning of VMS and noble metal mineralisation of the Central Cuban ore region is outlined. In the west, copper-VMS deposits with accompanying gold ore objects prevail. In the east, copper-zinc VMS deposits with barite and gold-silver objects are widespread.Conclusions. It is necessary to assume the different erosional sections corresponding to the blocks of the Cretaceous volcanic arc of Central Cuba, which is larger in the west and smaller in the east. Proceeding from the presence of veinlet gold ores, their confinement to tectonic zones and the lack of correlation between noble and chalcophile metals at the San Fernando deposit, as well as significantly different gold-silver ratios in the considered ore objects, it could be assumed that some of the gold-silver ores were formed after VMS. The obtained Au/Ag ratios are close to the ores of the high sulphidation type (high sulphide ores) from similar ore regions of Venezuela and the Kur-il island arc. In this regard, one can expect hidden gold deposits in the west and gold-silver deposits in the east of the studied area.
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THALHEIM, KLAUS. "THE 1477 SILVER FIND AT THE ST. GEORG MINE IN SCHNEEBERG AND SIGNIFICANT ORE SPECIMENS IN THE MUSEUM OF MINERALOGY AND GEOLOGY IN DRESDEN." Earth Sciences History 38, no. 2 (November 1, 2019): 157–72. http://dx.doi.org/10.17704/1944-6178-38.2.157.

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ABSTRACT Two silver ore specimens in the mineralogical collection of the Senckenberg Natural History Collections Dresden, Museum of Mineralogy and Geology, are samples from one of the most spectacular silver finds in Saxon Erzgebirge. The history of the find and of the two silver ore specimens is discussed. The origin of such a rich deposit of silver ore is examined in relationship to the geology of mineral deposits.
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Goldsmith, L. B., A. J. Sinclair, and P. B. Read. "Exploration implications of production and location data for Ag-rich vein deposits, Trout Lake mining camp, southeastern B.C." Canadian Journal of Earth Sciences 23, no. 10 (October 1, 1986): 1627–40. http://dx.doi.org/10.1139/e86-152.

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Ore tonnage production data from 43 former producers in the Trout Lake mining camp are examined using plots of spatial density of deposits and statistical methods. Outlines of mineral belts are established from spatial density with the 0.5 deposit per 4 km2 contour. Probability plots of ore tonnages distinguish two lognormal populations of deposits. Probablity plots of metal grades show four lognormal populations of silver and two of gold. A metal content versus ore tonnage graph draws attention to the similarity in proportions of metals produced from high-tonnage and from medium- + low-tonnage deposits. Triangular graphs of metal contents emphasize the direct relationship between silver and lead; metal ratios suggest some relationships that may be dependent upon host rocks. Linear correlation coefficients of tonnage and metal content show an inverse relationship between tonnage and precious metals and a direct relationship between silver and lead. Multiple regression models established between production tonnages and average grades can estimate deposit size within one order of magnitude.Systematic evaluation of quantitative production and location data can augment exploration decisions.
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Abriou, D., D. Gagnot, J. Jupille, and F. Creuzet. "Morphology of Silver Thin Films Deposited on TiO2(110) Surfaces." Surface Review and Letters 05, no. 01 (February 1998): 387–92. http://dx.doi.org/10.1142/s0218625x98000712.

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The growth mode of silver films deposited at room temperature on TiO 2(110) surfaces has been examined by means of atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) in ultrahigh vacuum (UHV) conditions, On clean vacancy-free TiO 2(110) surfaces, 0.1-nm-thick (on average) Ag deposits form a two-dimensional (2D) layer. When the thickness of the silver overlayer is increased, 3D clusters are shown to appear while the 2D film is preserved, furthermore, the influence of surface oxygen vacancies on the growth of Ag/TiO 2(110) is evidenced by well-characterized differences in the morphology of 9-nm-thick silver deposits.
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P Marshall, Craig, Karen L Mackenzie, Junhong Chen, Dorothy Z Oehler, Graham A Logan, and Malcolm R Walter. "Microbes, organic matter and ore deposits." Microbiology Australia 25, no. 1 (2004): 36. http://dx.doi.org/10.1071/ma04136.

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The 1640 Ma (million years old) Here?s Your Chance (HYC) deposit at McArthur River, Northern Territory, Australia is one of the largest and least metamorphosed lead-zinc-silver deposits in the world. The mineralised interval has been divided into several orebodies and is separated by relatively barren sediment.
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PATERSON, COLIN J. "Ore Deposits of Gold and Silver." Mineral Processing and Extractive Metallurgy Review 6, no. 1-4 (January 1990): 43–66. http://dx.doi.org/10.1080/08827509008952656.

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Pak, S. J., S. G. Choi, and S. H. Choi. "Systematic mineralogy and chemistry of gold-silver vein deposits in the Taebaeksan district, Korea: Distal relatives of a porphyry system." Mineralogical Magazine 68, no. 3 (June 2004): 467–87. http://dx.doi.org/10.1180/0026461046830199.

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AbstractGold-silver vein deposits in the Taebaeksan district, Korea, coexist in time and space with a variety of other deposit types such as skarns, hydrothermal carbonate replacement bodies and Carlin-like deposits and reflect proximity to a magmatic source. The seven gold-silver deposits within the district show common features such as multiple complex veins, an abundance (up to 30% in ore) of base-metal sulphides, a wide range of Ag/Au ratios and the common occurrence of carbonate. Quartz-vein textures indicate open-space-filling at shallow crustal levels. On the basis of Ag/Au ratios of ore, mode of occurrence, and associated mineral assemblages, the seven deposits studied can be classified as follows; Au-dominant type (Group I), Au-Ag type (Group II), Ag-dominant type (Group IIIA) and base-metal and Ag-dominant type (Group IIIB). Group I is characterized by paragenetically early Pb-Zn basemetal sulphides with electrum and late, rare Ag-sulphides and Ag-sulphosalts, whereas Group III contains more Ag-sulphides and/or Ag-sulphosalts. Group II is gold-rich, but transitional to Group III. The Au contents and FeS contents of electrum and sphalerite, respectively, from all of the deposits decreased as mineralization proceeded. Temperature and log fS2 conditions of gold-silver mineralization tend to decrease from Group I and II to Group III deposits (i.e. 340–270°C, –9.3 to –11.8 bar, 320–240°C, –9.5 to –10.3 bar, 250–160°C, –12.5 to –16.9 bar, respectively) as well as from the main to late stages of mineralization in each deposit. The systematic mineralogy and variation of physicochemical conditions in Groups I, II and III are thought to be due to their relative positions with respect to a magma source that is genetically related to a low-to-intermediate-sulphidation porphyry system. Au-rich deposits are proximal to a magmatic source, whereas Ag-rich deposits are more distal.
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Smyk, Mark C., and James M. Franklin. "A synopsis of mineral deposits in the Archean and Proterozoic rocks of the Lake Nipigon Region, Thunder Bay District, Ontario." Canadian Journal of Earth Sciences 44, no. 8 (August 1, 2007): 1041–53. http://dx.doi.org/10.1139/e07-013.

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A variety of metallic and non-metallic mineral deposit types occur within Archean and Proterozoic rocks in the area encompassing the Lake Nipigon Region Geoscience Initiative. Archean deposit types include Algoma-type banded iron formation-hosted iron (e.g., Lake Nipigon iron range); volcanogenic massive sulphide copper–zinc (e.g., Onaman–Tashota belt); ultramafic intrusion-hosted chromium (e.g., Puddy–Chrome lakes); mafic to ultramafic intrusion-hosted copper–nickel – platinum group element (PGE) (e.g., Lac des Iles); and pegmatite-hosted deposits of rare metals (Li, Ta, Be), uranium, and molybdenum (e.g., Georgia Lake field, Black Sturgeon Lake, and Anderson Lake, respectively). Mesothermal lode gold deposits are prominent in the Beardmore–Geraldton camp. Superior-type iron formation occurs in Paleoproterozoic Gunflint Formation. "Red-bed" copper occurs in Mesoproterozoic Midcontinent Rift-related Osler Group volcanic and interflow sedimentary rocks. Native copper and copper sulphides occur in Mesoproterozoic Sibley Group sedimentary rocks, adjacent to ultramafic intrusions. These mafic to ultramafic intrusions, associated with Midcontinent Rift magmatism, host copper–nickel–PGE deposits (e.g., Seagull, Great Lakes Nickel). Silver-bearing veins occur in Paleoproterozoic Animikie Group sedimentary rocks in proximity to Midcontinent Rift-related mafic intrusions (e.g., Silver Islet, Silver Mountain). Lead–zinc–barite veins, uranium-bearing veins, and amethyst vein and replacement-type deposits may be cogenetic and formed at or near the unconformity between Sibley Group basal sandstone and underlying Archean granitic basement (e.g., Dorion, Black Sturgeon Lake, McTavish Township). The hydrothermal systems that produced all of these veins were probably driven by heat associated with Midcontinent rifting. Many occur in structures related to rift-bounding faults. Iron oxide – copper–gold deposits may occur near the English Bay intrusion.
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Dissertations / Theses on the topic "Silver deposits"

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Ahlzén, Ewa. "Ädelmetalldeponeringar på Gotland under vikingatid : Gömda eller undanlagda?" Thesis, Södertörns högskola, Institutionen för historia och samtidsstudier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-28385.

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The Viking Age (800–1050 A.D.) is also called the “Silver Age”. Despite the fact that no silver mines were in use in Sweden at that time, most of the landowners for one reason or another had a lot of precious metal stored in their homes. Alone the Island of Gotland has found over 700 different hoards of which around 400 of these hoards have been excavated over the last 100 years. Archeologists are debating whether all this precious metal had been brought to the island by traders from the east, or if it came from the Viking raids in the west. Besides the coins, thousands of pieces of silver have been recorded. The intention of this essay is to attempt to clarify if it is possible to find differentiating factors between the hoards and to classify categories of these precious metal deposits. I indeed, such classifications and categorizations are achievable in the research findings in this paper.
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Moncada, de la Rosa Jorge Daniel. "Winning Silver." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52861.

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The search for mineral deposits is a time consuming, risky and very expensive process. Applying new models and methods provides a competitive advantage in the search for mineral deposits because an explorationist can quickly evaluate potential targets and eliminate areas without good potential for mineralization. This dissertation presents a practical technique for prediction to finding precious metal mineralization at Guanajauato mining district (GMD) base on theoretical and experimental studies of fluids properties, mineral phase equilibrium, physical and chemical mechanisms. Making the technique highly transportable so that it can be applied in the field during an exploration program base on petrographic characteristics of mineral textures produced during boiling events in quartz, calcite and adularia, and fluid inclusions contained in these phases. While this work was conducted in GMD, the results should be applicable in exploration for epithermal deposits worldwide. The GMD is one of the largest silver producing districts in the world. Ore shoots are localized along three major northwest trending vein systems, the La Luz, Veta Madre and Vetas de la Sierra. More than 1200 samples were collected from surface outcrops, underground mine and historical and recent drill core. Traverses perpendicular to veins in all system were also conducted. Most of the samples (approximately 90%) were also assayed for Au, Ag, Cu, Pb, Zn, As, Sb. Samples from the GMD show a wide range in silica textures are indicative of rapid precipitation, such as occurs when fluids boil. Other mineral phases, including illite, rhombic adularia and bladed calcite are also indicative of rapid growth in a hydrothermal system and are characteristic of boiling systems. Because boiling is an effective mechanism for precipitating gold and silver from hydrothermal fluids, the presence of mineral textures indicative of boiling is a desirable feature in exploration. In many samples, textural evidence for boiling is supported by coexisting liquid-rich and vapor-rich fluid inclusions, or Fluid Inclusion Assemblages consisting of only vapor-rich inclusions, suggesting "flashing" of the hydrothermal fluids. Textural and fluid inclusion evidence for boiling has been observed in the deepest levels of the GMD, suggesting that additional precious metal resources may occur beneath these levels.
Ph. D.
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Thomson, Brian. "Geology of silver mineralisation at Candelaria, Nevada, USA." Thesis, University of Aberdeen, 1990. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=238078.

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Candelaria, situated in central western Nevada, along the western margin of the Great Basin, is a large and predominantly low grade, epigenetic disseminated- and vein-type Ag deposit, of Early Cretaceous age. It represents the eroded, deeply oxidised and fault-disrupted root of extensive stratiform quartz-dolomite stockworked and sericite-dolomite-altered zones of medium temperature pyrite-dominated Ag(-Pb-Zn-Sb-As±Cu±Au) sulphide-sulphosalt mineralisation, which is hosted by receptive sedimentary and igneous rocks within structurally favourable zones in a district-scale tectonic pinchout, and which is genetically associated with Cordilleran granodiorite porphyry hypabyssal magmatism (diking), of high K calc-alkaline affinity. The mineralisation occurs along and directly beneath the Pickhandle allochthon, a serpentinite-sheathed volcanic-sedimentary tectonic méange which forms a local 'sole' plate to the regionally extensive Golconda allochthon, which was emplaced onto the edge of continental North America during the Early Triassic Sonoma orogeny. Mineralisation occurred where an irregularity in the Pickhandle thrust plane, caused by thickening of the méange, effected locally deeper truncation of the parautochthonous foreland sequence in its footwall - chiefly marine sediments of the Lower Triassic Candelaria Formation - against the deformed cherts of the Ordovician basement (Palmetto complex), to form a structural trap. Within this trap, mineralisation is hosted mainly by carbonaceous, carbonate- and phosphate-rich (and trace metal-rich) black shales at the base of the Candelaria Formation and by dolomite-quartz-altered serpentinites at the base of the Pickhandle allochthon. Stable isotope data (O, H, S) point to a predominantly magmatic source for the hydrothermal fluids and ore sulphur, a source most likely to be the parent pluton to the granodiorite porphyry dikes. More ore metals were also of igneous origin (mass balance calculations rule out Candelaria member 1 as the chief metal source).
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Whitbread, Michael Andrew Ian, and n/a. "Lithogeochemichal alteration aound the Century and Elura Zn-Pb-Ag deposits: detecting alteration expressions in deep and near surface environments." University of Canberra. Resource, Environmental & Heritage Sciences, 2004. http://erl.canberra.edu.au./public/adt-AUC20051129.112425.

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Exploration companies commonly rely on geochemistry to identify alteration of distinctive geochemical and mineralogical character, surrounding metal sulphide deposits that were precipitated from hydrothermal fluids. However, examination of raw analytical data is prone to error due to closure effects and the difficulty in removing the effects of background variation in unaltered rocks from the variations imposed by later hydrothermal alteration. Closure can be avoided by using ratios, or by utilising mass balance approaches based on fixing volume, mass or concentration changes between samples of parent and daughter lithologies. Using a parent-daughter approach is limiting, because only pairs of samples can be compared at any one time and because an unaltered equivalent must be produced for each sample examined in this way. Pearce Element Ratio analysis and General Element Ratio analysis (PER and GER) are not restricted in this fashion, and are more amenable to interrogation of large data sets. PER and GER are also capable of decoupling background variation from that variation due to hydrothermal alteration. Furthermore, these ratio methods are readily applied to commercially derived lithogeochemical assays. In this study, various analytical methods and interpretive techniques (including PER and GER) have been applied to identify alteration in rocks around the Century and Elura Zn-Pb-Ag deposits, and to assess whether primary ore-related alteration effects can still be identified once altered rocks have been subjected to weathering. Ratios of trace elements over a conserved element have been used to generate a suite of pathfinder elements for each deposit. Elements enriched in host rocks around both deposits include the economic metals Zn, Pb and Ag, along with Rb and Tl. Sodium is ubiquitously depleted in altered rocks. Other elements in the pathfinder suites are distinctive to each deposit type, and include a number of major and trace elements that are added or removed from the rocks around the mineralised zones. For example, Sb and As are enriched in rocks around Elura mineralisation while Ge and Cd are enriched in samples around Century deposit. Iron carbonate development accompanied by potassic alteration, the destruction of albite and the absence of chlorite are the dominant mineral alteration effects at both deposits. PER and GER diagrams have been used to quantify the intensity of this alteration and allow lithogeochemistry to be used to vector towards high intensity alteration, which is adjacent to Century and Elura mineralisation. These ratio methods are applied to both visibly and cryptically altered rocks at both deposits, and have a very high degree of success in classifying alteration in unweathered rocks. The following simple PER ratios indicate proximity to Elura mineralisation: Ca/C, K/Al for shales, K/(Al-Na) for siltstones/sandstones. The following simple PER ratios indicate proximity to Century mineralisation: Mn/Ti, Mg/Ti and Fe/Ti vs C/Ti, K/Ti vs Al/Ti, K/Ti vs (Al-Na)/Ti. Pathfinder elements can be overlain onto PER and GER diagrams to aid in ranking the prospectivity of samples, and to assess mineral hosts for individual pathfinder elements. Weathering destroys most indicators of alteration in the Elura area, while alteration signatures are better preserved in host rocks around the Century deposit.
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Nowak, Marek Stanislaw. "Ore reserve estimation, Silver Queen vein, Owen Lake, British Columbia." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30028.

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The Silver Queen polymetallic vein system south of Houston, B.C., can be treated as a 2-dimensional problem for purposes of reserve/resource estimation. Complexities in obtaining reserve/resource estimates arise from (i) uncertainties in geological interpolation and extrapolation of the vein system, (ii) uncertainties in the distinction between vein and highly altered wallrock in some old drill logs, (iii) complex and multivariable geological character of the vein, (iv) a limited number of exploration drill holes and (v) a different support for drift and drill hole data. Each of these problems has been considered in detail. The study comprises geological analysis, data analysis, point kriging (analysis of thickness and metal distribution) block kriging and comparison of reserve/resource estimation by various procedures including ordinary kriging, inverse squared distance weighting, and polygonal methods. A novel component of the investigation is the use of correlograms (in reality, 1 minus the correlogram) as a substitute for the variogram in geostatistical estimates. This procedure was tested as a means of defining continuity of DDH and Drift assay data of differing support. Ordinary kriging of large polygonal blocks provides metal contents more or less comparable to but locally more conservative than polygonal results reported in a recent feasibility study. Differences are in part due to the use of somewhat different data for the two procedures. The effect of the volume of the selective mining unit on the recovered tonnage and grade is described and limitations of the indirect lognormal method are presented.
Applied Science, Faculty of
Mining Engineering, Keevil Institute of
Graduate
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Cauchois, Romain. "Microstructuring inkjet-printed deposits from silver nanoparticules coalescence to the fabrication of interconnections for electronic devices." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00847021.

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Several challenges are still holding back the technological transfer of printed electronics to industry in spite of recent progresses. In this thesis work, the printing method of inks based on silver nanoparticles (<Ø>=25 nm) was optimized according to its rheology and to the fluid/substrate interactions for the fabrication of electrical interconnections with a thickness of 500 nm. These lines were printed on silicon or flexible substrates and annealed either by conventional (oven or infrared) or selective methods (microwave) at temperatures comprised between 100 and 300 °C.A better understanding of the relationship between process and microstructure of these printed thin films, based on several crystallographic equipments (XRD, EBSD and EDX), led to the optimization of nanocrystallites growth with an activation energy of about 3 to 5 kJ*mol-1. In addition to the low residual stress (70 MPa), this optimization is used to achieve low electrical resistivity (3.4 μOhm*cm) associated with a greater coherence of the crystal lattices at grain boundaries. The probability of electron scattering at such interfaces can be further reduced using an innovative approach of oriented crystallite growth by atomic interdiffusion from the substrate.The low mechanical stiffness (E<50 GPa) of these porous lines requires a reinforcement step either by crystalline texturation or by electroless growth to withstand the assembly and wire-bonding steps. The fabrication of a functional demonstrator thus validated the printing technology for the manufacture of electronic components.
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Wiberg, Steen Tobias. "Genetic relationships and origin of the Ädelfors gold deposits in Southeastern Sweden." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67912.

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Ädelfors is situated ca 17 km east of Vetlanda, Jönköping County, in the N-S striking Trans-scandinavian igneous belt and is a part of the NE-SW striking 1.83-1.82 Ga Oskarshamn-Jönköping belt emplaced during a continental subduction towards the Svecofennian continental margin. The continental arc hosts the 1.83 Ga metasedimentary Vetlanda supergroup composed of foliated metagreywacke, metasandstone and metaconglomerate. The sequence is intercalated by mafic and felsic volcanites and hosts the Cu-Au-Fe-mines at Ädelfors. Ädelfors mining field consists of ca 330 mineralized quartz veins hosting both copper, gold and iron. The iron mines Nilsson’s iron mine (NFE) and Fe-mine (FE), the copper mine Kamelen (KM) and the gold mines Brånad’s mine (BR), Adolf Fredrik’s mine (AF), Old Kron mine (GKR), Old Kolhag’s mine (GKO), Thörn mine (TH), New Galon mine (NG), Stenborg’s mine (ST), Tysk mine (TG), Hällaskallen (HS) and Fridhem (FR) have been investigated to deduce a possible genetic relation between the veins and their origin. Sulfur isotope ratios have also been conducted on pyrite from KM, AF and FE. The veins can stucturally be divided into several groups. AF, GKR, ST, NG, TH and possibly NFE are striking 10-70° with a dip of 55-70°. BR, GKO and KM are striking 110-140° with a dip of 80-90° whereas TG and HS strike 90-110° dipping 85°. Fridhem, being distal to the other mines, strikes 70° and dips 80°. A chlorite-quartz-biotite-sericite-rich metapelite hosts the veins in all localities except; FR where a layered, beresitizised felsic volcanite rich in plagioclase, sericite, biotite and quartz hosts disseminated pyrite; and NFE, HS and NG which are hosted by a mafic tuffite. Quartz veins are mainly milky and equigranular, exceptions are FE with black pyrite-bearing quartz veins, cutting through the banded magnetite-metapelite and KM with its dynamically recrystallized quartz. Chlorite-, zeolite-, carbonate-, hematite-, amphibole-, kalifeldspar-, sericite-, biotite- and epidote alteration has been observed among the localities. The ore minerals are dominated by: fractured sub- to euhedral pyrite in cataclastic aggregates or selvage bands, interstitial chalcopyrite in pyrite, marcasite, pyrrhotite, gold and sporadic chalcopyrite diseased sphalerite and arsenopyrite. Previously not reported tetradymite, staurolite, galena and Ce-monazite have also been observed. Bismuthinite and tetradymite as inclusions in pyrite were observed in AF, GKR, FR and TG. Gold was observed in AF, BR, GKR and TG as inclusions in pyrite or quartz with a Au/Ag median of 78.41. HS distinguishes itself with Au/Ag ratios of 4.66-5.25. The trace element ratios in pyrite reveal two major types of pyrite. 1) found in FE and KM (pyrite type 1) with Co/Ni ratio of 10.94, Bi/Au of 1.79, Bi/S of 0.037, Au/Ag of 11.13, S/Se of 235.96 and As/S of 0.006. 2) found in NG, GKO, ST, TH, AF, NFE, HS, GKR, BR, FR, TG and as stringers in KM4 py1 pyrite type 2) with an average Co/Ni ratio of 5.26, Bi/Au of 1.95, Bi/S of 0.031, Au/Ag of 4.19, S/Se of 0 and As/S of 0. δ34S values strengthens this grouping as KM and FE has 1,3-2,6 ‰ and AF 3,6-3,8 ‰. The following geological interpretation has been concluded: The banded iron formation in FE is the earliest mineralization and was later fractured, emplacing quartz veins with pyrite of type 1. During this event, the Cu-vein in KM was also formed. A second generation of fractures, emplaced after the Småland granitoids formed, were filled with quartz and pyrite of type 2 at mesozonal depth. This is the main stage of gold mineralization and includes NG, GKO, ST, TH, AF, NFE, GKR, BR, FR and TG. During this event, pyrite of type 2 was added to KM, causing recrystallizing of the quartz. HS is possibly emplaced last or altered as it is more enriched in silver. Morphology, mineralogy, alterations, mineral chemistry and sulfur isotope signatures indicates an orogenic origin of the gold-rich quartz veins at Ädelfors as well as the copper-rich vein in KM.
Ädelfors ligger ca 17 km öster om Vetlanda, Jönköpings län, i det N-S strykande Transskandinaviska granit och porfyrbältet och är en del av det NÖ-SV strykande 1,83-1,82 Ga Oskarshamn-Jönköpingsbältet (OJB) bildad i en kontinental subduktionszon i kanten av den Svecofenniska kontinentalplattan. I denna kontinentalbåge ligger Vetlanda supergruppen som är en metasedimentär del av OJB bestående av starkt folierad 1,83 Ga metagråvacka, metasandsten och metakonglomerat med inlagringar av mafiska och felsiska vulkaniter. Ädelfors gruvfält består utav ca. 330 kvartsgångar förande mestadels guld men också koppar. Järnmineraliseringar i form av bandad järnmalm finns också i området. Geologin, mineralogin och pyritens kemiska sammansättning från järngruvorna Nilssons järngruva (NFE) och Fe-gruvan (FE), koppargruvan Kamelen (KM) och guldgruvorna Brånadsgruvan (BR), Adolf Fredriks gruva (AF), Gamla Krongruvan (GKR), Gamla Kolhagsgruvan (GKO), Thörngruvan (TH), Nya Galongruvan (NG), Stenborgs gruva (ST), Tyskgruvan (TG), Hällaskallen (HS) och Fridhem (FR) har undersökts för att finna eventuella genetiska likheter. Svavelisotopförhållande har fastställts för pyrit från AF, FE och KM. Strukturellt kan gångarna delas in i ett antal grupper. AF, GKR, ST, NG, TH och möjligtvis NFE stryker 10-70° och stupar 55-70°. BR, GKO och KM stryker 110-140° och stupar 80-90° medan TG och HS stryker 90-110° och stupar 85°. Fridhem stryker 70° och stupar 80°. En klorit-kvarts-sericit-biotitrik metapelit utgör värdbergarten i alla gruvor förutom; FR där den utgörs av en beresitiserad felsisk vulkanit rik på plagioklas, sericit, biotit och kvarts med disseminerad pyrit; och NFE, HS, NG vilka har en mafisk tuffitisk moderbergart. Kvartsgångarna är mjölkvita med undantag för FE:s svarta, pyritförande kvarts vilket uppträder som sprickfyllnad i den bandade järnmalmen och är senare bildad. Kvartsen i KM är starkt dynamiskt omkristalliserad. Svag till måttlig foliation är vanlig i sidoberget med undantag av stark foliation i TG och NFE, vilka är lokaliserade i förkastningssprickor med stark kloritförskiffring av värdbergarten. Klorit-, zeolit-, karbonat-, hematit-, amfibol-, kalifältspat-, sericit-, biotit- och epidotomvandling förekommer i majoriteten av lokalerna. Malmmineralen är dominerande sprött deformerad subhedral till euhedral pyrit som kataklastiska aggregat eller band, interstitiell kopparkis i pyrit, markasit, magnetkis, guld och sporadiskt kopparkissjuk zinkblände och arsenikkis. I det här arbetet har även tetradymit, staurolit, blyglans och Ce-monazit observerats. Bismutinit och tetradymit i form av inneslutningar i pyrit observerades i AF, GKR, FR och TG. Guld observerades i AF, BR, GKR och TG som inneslutningar i pyrit eller fritt i kvarts med Au/Ag medianvärde på 78,41, avvikande är HS med värden mellan 4,66-5,25.    Förhållanden mellan spårelement i pyrit indikerar två typer av pyrit. Typ 1 funnen i FE och KM har följande värden: Co/Ni = 10,94, Bi/Au = 1,79, Bi/S = 0,037, Au/Ag = 11,13, S/Se = 235,96 och As/S = 0,006. Typ 2 funnen i NG, GKO, ST, TH, AF, NFE, HS, GKR, BR, FR, TG och som sliror i KM4 py1 har följande värden Co/Ni = 5,26, Bi/Au = 1,95, Bi/S = 0,031, Au/Ag = 4,19, S/Se = 0 and As/S = 0. δ34S värden styrker denna uppdelning där KM och FE har värdena 1,3-2,6 ‰ och AF 3,6-3,8 ‰. Den geologiska utvecklingen av fältet har tolkats som följande: FE-gruvans bandade järnmalm är den tidigaste mineraliseringen vilket följs utav uppsprickning och läkning av kvarts med pyrit typ 1 som också bildar kopparmineraliseringen KM. Senare sprickzoner efter Smålandsgraniternas intrusion läks av kvarts med pyrit typ 2 på mesozonalt djup vilket bildar NG, GKO, ST, TH, AF, NFE, GKR, BR, FR, TG och omkristalliserar och introducerar nya pyritsliror i kvartsen i KM. HS bildas möjligtvis sist eller har blivit omvandlad eftersom den är anrikad på silver. Morfologi, omvandlingar och svavelisotop-signaturer tyder på ett orogent ursprung för Ädelfors guldrika kvartsådror samt den kopparrika kvartsådern i KM.
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8

Devlin, Barry David. "Geology and genesis of the Dolly Varden silver camp, Alice Arm area, northwestern British Columbia." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26243.

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The Dolly Varden camp, Alice Arm area, northwestern British Columbia, is characterized by stratiform and volcanogenic silver-lead-zinc-barite deposits in Early to Middle Jurassic calc-alkaline volcanic rocks of the Hazelton Group. These deposits, containing exceptional silver and significant base metal values, are in andesitic tuffaceous rocks, and occur typically as layers of quartz, carbonate, barite and jasper, with lesser amounts of pyrite, sphalerite and galena, and sparse chalcopyrite. Production from three deposits, the Dolly Varden, Northstar and Torbrit mines, totaled 1,284,902 tonnes of ore that averaged 484g silver per tonne, 0.38 percent lead and 0.02 percent zinc. The Hazelton Group is a thick, widespread assemblage of basaltic to rhyolitic volcanic flow rocks, their tuffaceous equivalents, and derived sedimentary rocks. Dolly Varden camp is underlain by more than 3,000m of Hazelton Group rocks comprised of one major volcanic and one major sedimentary formation. Volcanic rocks underlie sedimentary rocks and have been subdivided into footwall and hangingwall units based on stratigraphic position relative to the mineralized stratiform horizon. Footwall volcanic rocks consist of green ± maroon basaltic-andesite tuff, green ± maroon porphyritic andesite and green andesite shard tuff. Stratiform mineralization rests conformably upon the underlying green andesite shard tuff. Hangingwall volcanic rocks above the stratiform layer consist of pale grey basaltic-andesite ash tuff, maroon basaltic-andesite ash-lapilli tuff, grey-green porphyritic andesite, and pale green andesite ash tuff. Hangingwall volcanics are unconformably capped by sedimentary rocks consisting of maroon siltstone, calcareous and fossiliferous wacke, and black siltstone and shale; black siltstone and shale form the youngest rock unit of the Hazelton Group in the Dolly Varden area. Basalt and lamprophyre dykes intrude all rocks of the Hazelton Group. The rocks of the Hazelton group exposed in the Dolly Varden camp are folded into a series of anticlines and synclines with gentle, northwestern plunges. Two major sets of nearly vertical block faults cut all rock units; earlier faults trend northwest and younger faults trend north-northeast. Geological mapping, combined with petrologic, petrographic and isotopic data, indicate that the stratiform deposits probably formed as submarine exhalative deposits associated with andesitic volcanism of the Hazelton Group during the Early to Middle Jurassic. Evidence for a volcanogenic origin is the conformity of layered mineralization with stratigraphy, lateral and vertical mineral zonation patterns, consistent hangingwall versus footwall contact relationships, fragments of stratiform ore within tuffaceous volcanic rocks of the hangingwall, consistent differences in the stable isotopic compositions between the sulfides versus barite, quartz and carbonate gangue, and the Jurassic "fingerprint" for the lead-bearing deposits of the Dolly Varden camp. The Dolly Varden deposits display criteria for classification of a new, previously unrecognized, stratiform and volcanogenic, deposit type, named here, the "Dolly Varden type", and is characterized by silver-rich, low sulfide and high oxide stratiform mineralization within andesitic volcanic rocks.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
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9

Hasten, Zachary Eugene Levi. "Mid-Miocene magmatism in the Owyhee Mountains, ID: origin and petrogenesis of volcanic rocks in the Silver City district." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/14940.

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Master of Science
Department of Geology
Matthew E. Brueseke
Previous studies of the northern Great Basin have indicated that mid-Miocene epithermal gold and silver ore deposits distributed regionally are temporally related to the magmatic activity associated with the onset of widespread extension and the Yellowstone hotspot (Saunders and Crowe, 1996; Kamenov et al., 2007). This study is focused on the volcanic rocks and ore deposits from the Silver City district (SCD), ID to address the petrogenesis and magmatic evolution that was influential in forming local precious metal deposits. The goal is to understand the tectonomagmatic conditions that contributed to the petrogenesis of the volcanic suite in the Silver City district, which can be used to provide details on the relationship between coeval mid- Miocene magmatism and mineralization across the northern Great Basin and Oregon Plateau. In order to better constrain the magmatic evolution of the SCD and potential sources of the precious metals, we have undertaken detailed sampling of local crust and mid-Miocene volcanic units to constrain their physical, geochemical, isotopic, and geochronological characteristics, as well as provide constraints on the petrogenesis of the mid-Miocene volcanic package. Prior studies of the local volcanism have yielded K-Ar and [superscript]40Ar/[superscript]39Ar ages of ~16.6 to 14 Ma (Bonnichsen, 1983), while others have dated adularia from one SCD mineral vein and obtained [superscript]40Ar/[superscript]39Ar ages of between 15.6 and 16.3 Ma (Hames et al., 2009; and Aseto et al., 2011). Field observations are consistent with earlier work (Lindgren, 1900; Asher, 1968; Pansze, 1975; Halsor et al., 1988; Bonnichsen and Godchaux, 2006; Camp and Ross, 2009) and reveal a sequence of basalt consisting of regionally prevalent Steens Basalt that pre-dated precious metal mineralization. Some of the basalt appears to have been erupted locally, based on the presence of mafic dikes and thick pyroclastic deposits similar to other regional mid-Miocene magmatic systems. Stratigraphically overlying this lower basalt suite is a complex package of rhyolite flows and domes, thin silicic pyroclastic units, additional basaltic lava flows, intermediate lava flows, and mafic/silicic shallow intrusives. Geochemical analysis indicates that the basaltic and basaltic andesite lava flows are locally erupted flows of Steens Basalt while the intermediate and silicic volcanism in SCD can be classified into nine distinct units including two andesites, one dacite, four rhyolites and two rhyolite tuffaceous units. Geochemical modeling suggest that the intermediate and silicic magmas were formed by a combination of open system processes, including low pressure partial melting and assimilation of mid to upper crustal granitoid basement rock, and magma mixing between silicic and basaltic endmembers. The formation of silicic volcanism in the SCD is similar to other regional mid-Miocene silicic volcanic systems (e.g. Santa Rosa-Calico volcanic field and Jarbidge Rhyolite). Based on new [superscript]40Ar/[superscript]39Ar geochronology of both volcanic units and epithermally emplaced mineralization, SCD volcanism appears to have erupted over a relatively short amount of time that overlaps with local epithermal Au-Ag mineralization.
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Egnell, Philip. "Från bitsilver till silvermyntning : – en undersökning av den monetära utvecklingen i den vikingatida ekonomin på Gotland." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-385713.

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The purpose with this work is to try and see an economic development on Gotland during the Viking Age, where society went from a weight-based economy, to a monetary economy with its own coins. The aim is to try and distinguish a pattern in the investigated depots. How has the deposit structure changed during the Viking era when it comes to the minted and unminted silver?   The research about the silver deposits aim on the dating of the coins in order to create an approximate closing period for the contents of the depots.   The development of the silver structural change in the silver depots during the Viking Age makes it possible to study how the dominance of the early Islamic coins, in both coin and fragmented form, is phased out to be replaced by mainly English and German coins. The English and German coins that are found on Gotland could be seen as a model for the coins and the minting that began at the end of the Viking Age on the island.
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Books on the topic "Silver deposits"

1

Elevatorski, Edward A. Gold-silver bulk-tonnage deposits. Fallbrook, Ca., U.S.A: Minobras, 1987.

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Pahlman, J. E. Dual leaching method for recovering silver and manganese from domestic manganifferrous silver deposits. Washington, DC: U.S. Dept. of the Interior, 1987.

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Pahlman, J. E. Dual leaching method for recovering silver and manganese from domestic manganifferrous silver deposits. Pittsburgh, PA: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Ferguson, K. M. Lead, zinc, and silver deposits of Western Australia. Perth, W.A: Geological Survey of Western Australia, 1999.

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Mines, United States Bureau of. Dual Leaching Methold For Recovering Silver and Manganese From Domestic Manganiferous Silver Deposits. S.l: s.n, 1987.

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Gunther, Thomas. The potential supply of minerals from undiscovered copper-silver deposits in the Kootenai National Forest. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1990.

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Gunther, Thomas. The potential supply of minerals from undiscovered copper-silver deposits in the Kootenai National Forest. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1990.

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Gunther, Thomas. The potential supply of minerals from undiscovered copper-silver deposits in the Kootenai National Forest. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1990.

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McCammon, Richard B. Undiscovered deposits of gold, silver, copper, lead, and zinc in the conterminous United States. [Reston, Va.?]: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Warmada, I. Wayan. Ore mineralogy and geochemistry of the Pongkor epithermal gold-silver deposit, Indonesia. Clausthal-Zellerfeld: Papierflieger Verlag GmbH, 2003.

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Book chapters on the topic "Silver deposits"

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Javkhlan, Otgonkhuu, and Baatar Munkhtsengel. "Silver Deposits." In Modern Approaches in Solid Earth Sciences, 265–79. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5943-3_9.

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Palacios, C. M. "Geology of the Buena Esperanza Copper-Silver Deposit, Northern Chile." In Stratabound Ore Deposits in the Andes, 313–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88282-1_23.

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Wellmer, F. W., and E. J. Reeve. "The Toqui Zinc-Lead-Copper-Silver Deposits, Aysén Province, Chile." In Stratabound Ore Deposits in the Andes, 473–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88282-1_36.

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Jurgeit, M., and L. Fontboté. "The Stratabound Tuff-Hosted Elisa de Bordos Silver-Mercury Deposit, Northern Chile." In Stratabound Ore Deposits in the Andes, 647–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88282-1_51.

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Bilston, D. W., W. J. Bruckard, D. A. McCallum, G. J. Sparrow, and J. T. Woodcock. "Comparison of methods of gold and silver extraction from Hellyer pyrite and lead-zinc flotation middlings." In Sulphide deposits—their origin and processing, 207–21. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0809-3_14.

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Wolf, F. B., L. Fontboté, and G. C. Amstutz. "The Susana Copper (-Silver) Deposit in Northern Chile Hydrothermal Mineralization Associated with a Jurassic Volcanic Arc." In Stratabound Ore Deposits in the Andes, 319–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88282-1_24.

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Legge, P. J., and I. B. Lambert. "Australian Sediment-Hosted Zinc-Lead-Silver Deposits: Recent Developments and Ideas." In Sediment-Hosted Zn-Pb Ores, 299–332. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-03054-7_17.

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Vikentyev, I. V. "Gold and silver in Cu-Zn massive sulphide deposits of the Urals." In Mineral Deposit Research: Meeting the Global Challenge, 707–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_180.

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Liang, Hua-Ying, Ping Xia, Xiu-Zhang Wang, and Heng-Xiang Yu. "Studies on the genesis of adjacent Changkeng gold- and Fuwang silver-deposits, Guangdong Province, China." In Mineral Deposit Research: Meeting the Global Challenge, 781–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_199.

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Schmidt, F. P., C. Schumacher, V. Spieth, and G. Friedrich. "Results of Recent Exploration for Copper-Silver Deposits in the Kupferschiefer of West Germany." In Special Publication No. 4 of the Society for Geology Applied to Mineral Deposits, 572–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70902-9_41.

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Conference papers on the topic "Silver deposits"

1

Monroe, Lucas, Laura Bilenker, and Willis E. Hames. "THE GENESIS OF AU-AG DEPOSITS ON FLORIDA MOUNTAIN EPITHERMAL DEPOSIT, SILVER CITY DISTRICT, IDAHO." In Southeastern Section-70th Annual Meeting-2021. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021se-362016.

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TYCOVA, Anna, Vladimir JONAS, Jan PRIKRYL, Adela KOTZIANOVA, Vladimir VELEBNY, and Frantisek FORET. "Nanospray processing of silver nanoparticles for formation of dried deposits." In NANOCON 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/nanocon.2020.3768.

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Mizernaya, M., B. Dyachkov, A. Miroshnikova, and A. Mizerny. "INDUSTRIAL TYPES OF GOLD DEPOSITS OF THE EAST KAZAKHSTAN." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/14.

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The East Kazakhstan territory is the unique geologic province where a number of large-scale non-ferrous and gold deposits are concentrated [1]. Gold base metals (gold-containing) type is represented by gold containing sulphide complex deposits. It is characterized by many large-scale commercial deposits of copper, lead and zinc where gold as well as silver, cadmium, platinum, selenium and other elements are the associate component of copper-sulphide and sulphide complex deposits [2]. There are following ore types are distinguished: gold-listvenite type occurs in the Irtysh zone (Maraliha deposit); the gold-sulphide vein-disseminated type associated with island-arc, volcanogenic-carbonate-terrigenous formation С1v2-3 (Suzdalskoye, Baibura, Mirazh, Zhaima); gold-quartzite type is characterized by gold-quartzite-vein deposits in West Kalba zone (Kuludzhun, Sentash, Kazan-Chunkur and others); gold-arsenic-carbon-bearing type is presented by large, middle and small deposits of Bakyrchik’s group (Bakyrchik, Bolshevik, Gluboky Log and others). Last one is formed on middle-Hercynian collision ore-bearing level (С2-С3) [3]. Multiple-stage concentration of gold contributed to formation of very large deposits. Gold content ranges from is 0.2 to 60 g/t, average is 8-9 g/t. Considerable part of gold is found in micro- and nanoparticles, nanotubes containing Au, Ag, Pt, Pd, W, Mo, Sn, Y, Yb, Ta and other elements [
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Tsai, Ming Hsiu, Weng-Sing Hwang, and Hao-Long Chen. "Variation of Macroscopic Shape and Microstructure of Silver Nanoparticle Suspension Droplets Using Ink-Jet Printing." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21441.

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Micro-interconnects of integrated circuit (IC) devices were produced using ink-jet printing of Ag nanoparticle suspensions. The macroscopic shape and microstructure of the Ag micro-dot deposits using ink-jet printing were observed using SEM (Scanning Electron Microscope) and EDS (Energy-Disperse Spectrometers). The well-dispersed suspension of nanoparticle Ag colloids, which was made up of 5–10 nm silver particulates, allows low-temperature sintering of Ag. The 50 wt% Ag suspension had a viscosity of about 7.95 cP at 25°C, which is appropriate for printing jobs. A bipolar voltage signal was used to drive a piezo-electric droplet generator and then 50–70 μm diameter droplets was dispensed on the substrate. Using SEM, a smooth deposition of drying silver dot morphology was observed. Drying the silver dots was improved by using hydrophobic substrates and a slow evaporation rate of suspensions was used to resolve an unexpected ring-shape, because both are able to control the interactions among the self-assembled Ag particles, surface tension, and the evaporation rate of droplets. Finally, the deposit/substrate composite was processed at 300°C for 60 min under a pure oxygen atmosphere to allow for the complete evaporation of the carrier and for sintering of the nano-particles, thereby yielding a finished circuit interconnect.
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Kovar, Desiderio, Andre D. Albert, Michael F. Becker, and John W. Keto. "Pressure-Assisted Sintering of Nanocrystalline Silver Lines Produced by Laser Ablation of Microparticle Aerosols." In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31170.

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The Laser Ablation of Microparticle Aerosol (LAMA) process provides a method for generating high yields of aerosolized nanoparticles (NPs) that are then accelerated through a nozzle and impacted onto substrates. The process allows nanostructured films and patterned lines to be directly written onto substrates at room temperature. Using the LAMA process, we have demonstrated the ability to produce thick patterned deposits with densities ranging from 60–70% in the as-deposited state. After deposition, the lines were densified using pressure-assisted sintering and the microstructures and strengths of the films were investigated. Pressure-enhanced sintering resulted in densification and strong bonding at processing temperatures of 100–175°C and pressures of 100–600 MPa. Mechanisms for sintering at low temperatures are discussed.
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Moulding, Ann E., Tom H. Brikowski, and Tom H. Brikowski. "SPECTRAL INDICATORS OF FLUID CHEMISTRY FROM EFFUSIVE HYDROTHERMAL DEPOSITS IN SILVER PEAK/FISH LAKE VALLEY NEVADA." In 54th Annual GSA South-Central Section Meeting 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020sc-343896.

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John, David A., Joseph P. Colgan, Michael A. Cosca, Edward A. du Bray, and Peter G. Vikre. "MAGMATIC-HYDROTHERMAL HISTORIES OF MIOCENE EPITHERMAL GOLD-SILVER DEPOSITS IN THE TONOPAH AND DIVIDE DISTRICTS, WESTERN NEVADA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-281757.

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Richards, Barry Charles. "LEAD-ZINC-SILVER ORE DEPOSITS HOSTED BY CAMBRIAN CARBONATES IN THE SOUTHERN KOOTENAY ARC, SOUTHEAST BRITISH COLUMBIA." In Rocky Mountain Section - 69th Annual Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017rm-293200.

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Ellefmo, Steinar Løve, Martin Ludvigsen, and Erik Kristian Thon Frimanslund. "Full Cycle Resource Evaluation of SMS Deposits Along the Arctic Mid Ocean Ridge." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62525.

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Abstract:
Several hydrothermal vent sites have been discovered along the portion of the Arctic Mid-Ocean Ridge (AMOR) inside the extended Norwegian continental shelf (NCS). Seafloor massive sulfide (SMS) deposits are associated with these hydrothermal vent sites. These deposits contain significant amounts of valuable metals, such as copper, zinc, gold, and silver. Loki’s Castle is one of the most promising sites along the AMOR, with two 20–30 m high and 100 m wide mound-shaped SMS deposits. It is located at a water depth of 2,400 m. A production system concept is proposed for a deep-sea mining operation at Loki’s Castle based on the Nautilus Minerals’ Solwara 1 project. The overall cost structure and design of the Nautilus’ concept is in this study regarded feasible in AMOR in spite of the difference between the operating environment for the two locations. As the only relevant operational experience is De Beers’ shallow-water diamond mining off the coast of South Africa and Namibia, most of the environmental criteria used are taken from offshore drilling. Based on the net operating time, and accounting for scheduled maintenance and waiting-on-weather time, an estimate for annual average production rate and an annual production volume are estimated. Significant downtime is expected in January and July. Significant uncertainties are associated with early phases of projects. Probabilistic cost, grade and price estimates allow dealing quantitatively with uncertainties by giving input variables as probability distributions. Monte Carlo simulations are in this study run for different sets of variables, and the resulting key performance indicators are given as distributions. This paper adapts and presents a methodology normally used to assess technological and economic feasibilities of oil and gas projects. The methodology is adapted to the assessment of deep-sea mining projects and is illustrated through the assessment of the case based on Loki’s Castle ore characteristics and technologies planned for the Solwara 1 project with a cost structure adjusted according to AMOR conditions. Costs for processing, refining, waste disposal and logistics after ore arrival at onshore port is not included. The ore uncertainties are huge and the resources are with the present deposit knowledge speculative. Therefore, this study do not attempt to define any reserves.
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Devlin, Barry D. "EPITHERMAL SILVER-GOLD-BASE METAL DEPOSITS RELATED TO CALDERA DEVELOPMENT IN A NEWLY-IDENTIFIED GRABEN IN OAXACA, SOUTHEASTERN MEXICO." In 68th Annual Rocky Mountain GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016rm-275901.

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Reports on the topic "Silver deposits"

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Nesbitt, B. E., P. A. Cavell, and K. Muehlenbachs. Isotopic Characteristics of the McDame Gold-Silver Deposits, Cassiar District, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/127436.

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Huston, D. L., D. C. Champion, K. Czarnota, M. Hutchens, M. Hoggard, B. Ware, F. Richards, S. Tessalina, G. M. Gibson, and G. Cari. Lithospheric-scale controls on zinc-lead-silver deposits of the North Australian Zinc Belt: evidence from isotopic and geophysical data. Geoscience Australia, 2020. http://dx.doi.org/10.11636/134276.

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Cathro, M. S. Gold and Silver, Lead Deposits of the Ketza River District, Yukon: Preliminary Results of Field Work [Modified From Cathro, 1988]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132335.

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Killeen, P. G., C. J. Mwenifumbo, and B. E. Elliott. Borehole geophysical logs and physical property table for massive sulphide deposits in the Cordillera, British Columbia, including logs from the Buttle Lake, Chu chua, Equity Silver, Goldstream, Highland Valley, Lara and Sullivan deposits. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/204900.

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Duke, J. L. The Grew Creek Gold - Silver Deposit in South - Central Yukon Territory. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132337.

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Mola, E. E., and L. Blum. The Adsorption of Incommensurate Monolayers on an Hexagonal Substrate: Lead Underpotentially Deposited on Silver (111). Fort Belvoir, VA: Defense Technical Information Center, November 1988. http://dx.doi.org/10.21236/ada222764.

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Paradis, S. Isotope geochemistry of the Prairie Creek carbonate-hosted zinc-lead-silver deposit, southern Mackenzie Mountains, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2007. http://dx.doi.org/10.4095/224552.

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Vaillancourt, P. D. Sandstone lithology in the Silver Mine formation and its relation to galena occurrence in the Yava deposit, Cape Breton Island, Nova Scotia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120200.

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Mine maps of silver-lead-zinc epithermal deposits in the Lake City area, Hindale County, San Juan Mountains, Colorado. US Geological Survey, 1991. http://dx.doi.org/10.3133/mf2152.

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Geochemical signatures of silver and gold deposits, Tonopah 1 degree x 2 degrees Quadrangle, Nevada; description and applications to exploration. US Geological Survey, 1994. http://dx.doi.org/10.3133/b2077.

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