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Dissertations / Theses on the topic 'Sulphides'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Yemul, O. S. "Novel polyarylene sulphides." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1998. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3370.

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2

Igiehon, Uwagboe Osamede. "Carbothermic reduction of complex sulphides." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46358.

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3

Bayerköhler, Frieder [Verfasser], and Philipp [Akademischer Betreuer] Kurz. "Iron-molybdenum sulphides as proton reduction catalysts." Freiburg : Universität, 2017. http://d-nb.info/1144148901/34.

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4

Smit, Timotheus Servaas. "Hydrodesulphurization of thiophenes using transition metal sulphides." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/28084.

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5

O'Sullivan, Susan Nora. "The synthesis and application of chiral sulphides." Thesis, University of Cambridge, 1994. https://www.repository.cam.ac.uk/handle/1810/272788.

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6

Coimbatore, Dhandayuth Venkatesh. "Cerium chloride inhibition for high strength low alloy steel exposed to sulphide polluted seawater." University of Western Australia. School of Mechanical Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0134.

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[Truncated abstract] Corrosion of steel structures caused by sulphide is a common engineering problem encountered by many industries, such as the petroleum, chemical processing, mining and mineral processing industries. The control of sulphide corrosion is still a controversial topic among corrosion engineers. There is an absence of guideline for a reliable acceptable limit of sulphide level in service and each processing industry has its own empirical values. Selection of inhibitors in the sulphide environment depends on laboratory testing before its actual application in pipelines and reacti

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7

Mulligan, David John. "Reduction of sulphur dioxide over transition metal sulphides." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61916.

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8

Arterton, Bruce William. "Preparation related luminescent properties in II-VI sulphides." Thesis, Coventry University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386517.

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9

Atkins, Alison J. "Solid state studies of ternary oxides and sulphides." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320791.

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10

Maynard, Jonathan. "The genesis of sulphides in the Shetland ophiolite." Thesis, Open University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358559.

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11

Masenya, Mamago Adolphina. "Computational modelling studies of precious mixed metals sulphides." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1725.

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Thesis (MSc. (Physics)) -- University of Limpopo, 2016<br>The stabilities of PtS to PdS and PdS to PtS were investigated using density functional theory within the generalized gradient approximation. Their structural, electronic and mechanical properties were determined to show their stability and the effect of pressure on different compositions. We found good correlation of calculations with available ex-perimental data. The lattice parameters were observed to fluctuate with increasing con-centration for both systems. Furthermore, heats of formation were calculated to deter-mine the relative

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12

Gauld, Chris M. B. "Characterisation of sulphides from the INCO WD-16 Ni-Cu sulphide deposit, Wisner Township, District of Sudbury, Ontario, Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0019/MQ46482.pdf.

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13

Harrison, Mark Robert. "One-dimensional, mixed-metal sulphides – structural and physical properties." Thesis, University of Hull, 2011. http://hydra.hull.ac.uk/resources/hull:5281.

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New one-dimensional sulphides based on Ba2CoS3 have been synthesised and their structural and electronic properties investigated. The starting point was the one-dimensional sulphide Ba2CoS3, which shows one-dimensional anti-ferromagnetism, metallic-like behaviour and a small negative magnetoresistance. Cationic substitutions were carried out on both the barium and cobalt sites of Ba2CoS3. The substitution of zinc for cobalt into Ba2CoS3 resulted in the formation of the series Ba2Cox1−xZnxS3 (x = 0.0-1.0). Ba2Co1−xZnS3 compounds maintain the one-dimensional structure but become paramagnetic and

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14

Green, Pamela Rose. "The synthesis and structure of ternary transition metal sulphides." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284056.

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15

Whittles, T. J. "Electronic characterisation of earth-abundant sulphides for solar photovoltaics." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3010978/.

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This thesis explores the electronic characterisation of materials for use as absorber layers within photovoltaic solar cells: an attractive solution to the energy crisis. Primarily, XPS was used to characterise CuSbS₂, Cu₃BiS₃, SnS, and Cu₂ZnSnS₄. All of these materials can be classified as earth-abundant: an important factor when considering materials that are both readily available and environmentally friendly. To varying degrees, all of these materials are established as potential absorber layers, with reports of successful, albeit low-efficiency devices. Also, the literature is often scant

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16

David, Lorraine. "MBE growth and characterisation of metastable transition metal sulphides." Thesis, Heriot-Watt University, 2006. http://hdl.handle.net/10399/197.

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17

Olsen, Sarah. "Synthesis of Copper Sulphides: A Green Chemistry Microwave Approach." Thesis, KTH, Tillämpad fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279452.

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18

Condon, Brian D. "Stereoselective bond formation via lithiation of asymmetric acyclic sulfides." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/29911.

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19

Hannaby, M. P. "Phenylthio-controlled migrations around rings." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355872.

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20

Elwell, S. "A study of europium compounds in unusual oxidation states by Mossbauer spectroscopy and other techniques." Thesis, University of Kent, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235331.

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21

Thomson, G. F. "Palaeomagnetic and aeromagnetic studies of some sulphide deposits." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383983.

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22

Kemp, Anthony John. "The geochemistry of metalliferous concretions and their associated permo-triassic sediments from Budleigh Salterton, Devon." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337174.

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23

McKie, Marion Catherine. "The chemistry of 1,3,4-oxathiazol-2-ones and related systems." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/12633.

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24

Engin, Tahir. "Structural, magnetic and electron transport properties of mixed metal sulphides." Thesis, Heriot-Watt University, 2008. http://hdl.handle.net/10399/2059.

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The construction of cells that enables the electrical resistance of a material to be measured simultaneously with the collection of powder neutron diffraction data at a range of temperatures (4.2 :5 TIK:5 1000) is described. The cells have been used to investigate the origin of the anomalous electron-transport properties of the ternary sulphides, TICu6.ssS4, BaCu4S3 and CuFeS2. Data for TICu6.ssS4 reveal that the anomaly observed at 255 K is associated with a structural change from P41n to 141m on cooling due to a distortion involving a doubling of the e-axis of the unit cell. There,are .~/ tw

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25

Wass, S. A. "Some reactions of iron and molybdenum sulphides and related compounds." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370130.

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26

AueÌˆner, Christian Carl. "The synthesis and characterisation of novel quasi one-dimensional sulphides." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414855.

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27

Mueller, Moritz. "Biotic and abiotic alteration of hydrothermal sulphides at the seafloor." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/69029/.

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When active venting has ceased, reduced minerals in hydrothermal mounds and sediments continue to provide an inorganic energy source for chemolithotrophic microbes. This research focuses on the nature of microbially-mediated metal transformations in hydrothermal sediments during sulphide alteration and their impact on the ultimate fate of hydrothermal sulphides on the seafloor. The core studied is more seawater altered than other cores studied at TAG and provides an insight into the bacterial and archaeal communities as well as the geochemical processes taking place in highly altered metallife

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28

Swartbooi, Ashton Mark. "Precipitation of nickel and cobalt sulphides using different reactor configurations." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/6696.

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The nickel reduction process produces a stream containing unreacted dissolved nickel and cobalt. Removal of these metals to optimum levels is desired, however, the product should also be easy to handle and the process easy to incorporate into the current system. There are various precipitation agents that can be used to remove metals from solution, these being hydroxide, carbonates or sulphides. Sulphide precipitation has been gaining increased attention because of the advantages it holds above the other methods. These include: - attainment of high degree of metal removal over a broad pH ran

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29

Quezada, Reyes Víctor Alejandro. "Pretreatment to the leaching of copper sulphides minerals in oxidizing media." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/670663.

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La producción chilena de cobre procede de la hidrometalurgia y la concentración; el concentrado de cobre es tratado tradicionalmente mediante pirometalurgia. De acuerdo a Cochilco, el cobre producido en el año 2019, vía hidrometalurgia, fue un 27.3% del cobre chileno producido. Sin embargo, se prevé que esta aporte baje a un 11.6% para el año 2029, debido al agotamiento de los óxidos de cobre y la aparición de los sulfuros, principalmente calcopirita, siendo este mineral refractario a condiciones convencionales de lixiviación. Una opción para mejorar la eficiencia de lixiviación es el pretr

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30

Legrand, Daniel L. "Surface studies of nickel and iron sulphides with implications for flotation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31158.pdf.

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31

d'Arbeloff-Wilson, Sarah. "Reactions of the phosphaalkyne, PCBu't with metal sulphides, selenides and tellurides." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324201.

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32

Adegoke, Idowu Abiodun. "Experimental studies on hydrothermal mineral replacement of bornite by copper sulphides." Thesis, Adegoke, Idowu Abiodun (2021) Experimental studies on hydrothermal mineral replacement of bornite by copper sulphides. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/60897/.

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Pseudomorphic mineral replacement reactions occur in numerous geological processes (e.g. metamorphism, metasomatism, ore deposition, and chemical weathering) and anthropogenic processes (e.g., reservoir acidification, CO2 sequestration, acid mine drainage, materials syntheses, and minerals processing). Therefore, the understanding of the mechanism and kinetics of these reactions is important not only to geosciences but also to industrial applications. These reactions involve the replacement of a primary mineral by a product mineral in the presence of a fluid phase, with the product mineral pre

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33

Deveci, Haci. "Bacterial leaching of complex zinc/lead sulphides using mesophilic and thermophilic bacteria." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341175.

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34

Keith, Manuel [Verfasser], and Karsten [Akademischer Betreuer] Haase. "From active submarine vent systems to fossil volcanic-hosted massive sulphide deposits: an in-situ analytical study of hydrothermal sulphides / Manuel Keith. Gutachter: Karsten Haase." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1080362703/34.

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35

Poole, Mark Charles. "Synthetic and spectroscopic studies of organic sulphides, sulphoxides, sulphones, and their metal complexes." Thesis, University of Exeter, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332281.

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36

Moug, Richard T. "II/VI metastable sulphides : fundamental studies of MBE growth, characterization and nanostructure formation." Thesis, Heriot-Watt University, 2009. http://hdl.handle.net/10399/2279.

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This thesis presents a fundamental study of II-VI metastable sulfides. Details of the growth by Molecular Beam Epitaxy (MBE) and characterization of CrS,ZnS,MgS, and ZnMgSSe structures on GaP and GaAs substrates are presented. Multilayer structures of ZnS/CrS and ZnMgS/CrS were grown on GaP substrates and characterized using X-ray interference. Asymmetric X-ray spectra indicated the presence of mosaic structure in the layers. A discussion on solutions to the disordered surface is presented. Superlattice structures were designed to contain 100Å of CrS. These samples were sent to the Polish acad

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37

Szkoda, Iwona. "Phase relations, structural studies and physical properties of mixed metal oxides and sulphides." Thesis, Heriot-Watt University, 2008. http://hdl.handle.net/10399/2212.

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The phase relations in three oxide systems; ZnO–BiVO4, Pb2V2O7–BiVO4 and PbO– BiVO4, have been studied and their phase diagrams over the whole component concentration range up to 1273 K have been established. As a result of solid-state reaction between ZnO and BiVO4 mixed at a molar ratio of 2:1 or among ZnO, V2O5 and Bi2O3, mixed at a molar ratio of 4:1:1, a new double vanadate BiZn2VO6 has been obtained. Its crystallographic system was determined, its unit cell parameters were calculated and its incongruent melting temperature was established. A new compound is also formed in the Pb2V2O7–BiV

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38

Guelou, G. P. L. "On the structural and physical properties of Earth-abundant sulphides for thermoelectric applications." Thesis, University of Reading, 2016. http://centaur.reading.ac.uk/68420/.

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The work presented in this thesis focuses on improving the thermoelectric performance of cost-efficient, widely available, non-toxic transition-metal sulphides. Three families of materials, titanium-disulphide derivatives, tetrahedrites and bornites, were investigated owing to their promising electrical and/or thermal properties. Alongside thermoelectric property measurements, structural characterisation and measurements of various physical properties were carried out in order to explain the relationship between structural and physical features. A series of composition CoxTiS2 (0 ≤ x ≤ 0.75) w

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39

Abedelrasoul, Abuelgasim Abbaker. "Studies on the chemistry of some sulphides and of some sulphur-containing heterocyclic compounds." Thesis, University of Hull, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333763.

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40

McMordie, Robert Austin Simms. "Synthetic, mechanistic and stereochemical studies of the primary metabolites of sulphides and cyclic hydrocarbons." Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335559.

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41

Jean, R. N. Maïtena. "Étude de la matte sulfo-oxydante de la mangrove de Guadeloupe : caractérisation des micro-organismes principaux des familles Beggiatoaceae et Oscillatoriaceae." Thesis, Antilles-Guyane, 2013. http://www.theses.fr/2013AGUY0614/document.

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Les mattes de procaryotes constituent une niche écologique diversifiée. peu étudié!<..en mangrove et jamais décrjte dans les Antilles. L'objectif de cette thèse est de décrire les procaryotes filamenteux reposant sur le sédiment marin et de caractériser les interactions entre la matte, milieu et entre les différents micro-organismes. Nous avons d'abord caractérisé les micro-organismes majoritaires de la matte par le séquençage de l'ADNr 16S et des hybridations moléculaires (FISH). Il a ainsi été possible de décrire deux nouvelles espèces de Beggiatoaceae dont la structure a été étudiée par

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42

Dasgupta, Jhinuk. "Investigation on some 2-Alkylamido 6-chloro/Nitro-4H-1, 3, 2-Benjodi-oxaphosphorin-2 - Sulphides having pesticidal activities." Thesis, University of North Bengal, 1988. http://hdl.handle.net/123456789/1130.

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43

Rumball, John Alfred. "The interaction of partially weathered sulphides in the Mt McRae shale formation with ammonium nitrate." Thesis, Rumball, John Alfred (1991) The interaction of partially weathered sulphides in the Mt McRae shale formation with ammonium nitrate. PhD thesis, Murdoch University, 1991. https://researchrepository.murdoch.edu.au/id/eprint/51662/.

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Spontaneous explosion of ANFO charged in partially-weathered sulphides and the spontaneous combustion of these sulphides are serious hazards at the Mt Whaleback mine in the Pilbara region of Western Australia. The potential exists for the problems to become equally serious at Tom Price, Paraburdoo and other iron ore mines operating in the Brockman Iron Formation. The partially weathered sulphides occur in the Mt McRae Shale Formation, which is stratigraphically below the iron orebody in these mines. Folding and slope stability considerations necessitate the mining of large volumes of this

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44

Wengorsch, Tobias. "Experimental Alteration in Composite Mineral Systems: Mg-silicates, Fe-Ni-sulphides and Fe-Ti-oxides." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/78546.

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This study provides new insight into fluid-mediated replacement reactions for three different mineral systems. Hydrothermal experiments were conducted at 150 °C and 240 °C. It was found that serpentinisation reaction kinetics and crystal morphology are dependent on fluid and solid composition. Furthermore, primary Ni-sulphides were transformed into high Ni-tenor assemblages and it was found that the generation of fracture networks within ilmenite is strongly affected by the presence of hematite.

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45

Madureira, Danielle Jannuzzi. "Analise da expressão de genes que codificam proteinas transportadoras em Acidithiobacillus ferrooxidans e Acidithiobacillus thioxidans na presença de sulfetos metalicos." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/316929.

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Orientadore: Laura Maria Mariscal Ottoboni, Fernanda de Castro Reis<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-11T13:23:27Z (GMT). No. of bitstreams: 1 Madureira_DanielleJannuzzi_M.pdf: 2040876 bytes, checksum: f7135c29454428e52c585317e3d024c4 (MD5) Previous issue date: 2008<br>Resumo: Acidithiobacillus ferrooxidans e Acidithiobacillus thiooxidans são espécies bacterianas acidofilicas, quimiolitotróficas e mesofilicas, encontradas em ambientes de biolixiviação. A. ferrooxidans utiliza íons ferrosos e compostos q

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46

Almeida, Carolina Michelin de. "Gênese dos corpos de sulfeto maciço hidrotermal e platinóides associados no depósito de Fortaleza de Minas (MG) /." Rio Claro : [s.n.], 2003. http://hdl.handle.net/11449/92912.

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Orientador: Sebastião Gomes de Carvalho<br>Banca: Antenor Zanardo<br>Banca: João Batista Moreschi<br>Resumo: A mineralização sulfetada de Ni-Cu-Co (PGE), associado a rochas komatiíticas, da Jazida de Fortaleza de Minas, no sudoeste do Estado de Minas Gerais é tido como de origem magmática, porém processos pós-magmáticos modificaram substancialmente a distribuição original, estrutura, textura, mineralogia e química dos minérios. Estão presentes três importantes tipos de minérios sulfetados mobilizados: brecha, formação ferrífera bandada (BIF) e minério maciço hidrotermal. O último, é o objeto d

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47

MacRobbie, Paul Alexander Carleton University Dissertation Geology. "Stratigraphy, structure and volcanogenic sulphides, in Sicker group volcanic rocks on Mt. Sicker, Vancouver Island, B.C." Ottawa, 1988.

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48

Hagerfors, Erika. "Formation of Sulphides in the Canadian High Arctic Large Igneous Province; Testing the Influence of Sedimentary Rocks." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-357415.

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Large Igneous Provinces (LIPs) form during short-lived pulses of extensive magmatic activity. LIPs are known for their ability to affect global climate as well as for their Ni-Cu-PGE ore potential. A key factor that controls the intensity of the climate impact of a LIP and its ore potential is the assimilation of volatile-rich sedimentary host rocks. Magmas of the High Arctic Large Igneous Province (HALIP), exposed in the Arctic, intruded volatile-rich black shales, carbonates and evaporites in the Canadian Arctic Islands, offering a great opportunity for studying magma-sediment interaction. T

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49

Lindeberg, Tomas. "Indium Analysis and Small-scale Distribution in Sulphides from the Lindbom Prospect, Långban Area, Western Bergslagen Ore Province." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-196479.

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Indium is extensively used in LCD screens and solar cells. It is mainly produced as a byproduct during ore processing. With ever increasing demand for indium and most of the production being restricted to a few countries new sources for indium are needed. In Sweden, the westernmost Bergslagen is the only area, which is known to exhibit minerals with essential indium. The indium mineralisations at Långban, the Linbom prospect, which are studied in this bachelor’s thesis show several trends. The most notable is the copper indium trend seen in sphalerite. A likely substitution based on similar io

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50

Missack, Evon A. "Mineralogy and phase relations of the massive sulphides and metalliferous sediments of the Axial Rift Valley, Red Sea /." Heidelberg : [Ruprecht-Karls-Universität], 1988. http://catalogue.bnf.fr/ark:/12148/cb37429905t.

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