The consistency of the magmatic and mineralization ages indicates that the magmatic-hydrothermal process may have played an important role in the Ag-Pb-Zn-Au(-Cu) mineralization. Gold distribution, mineral association, and geochronological data, all suggest that the Au and Zn-Pb-Ag ores were formed from the same mineralization event rather than ...
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The Pusangguo deposit (1.42 Mt @ 1.42% Cu, 0.14 Mt @ 1.82% Zn, 0.08 Mt @ 1.01% Pb, and 285.8 t Co @ 140 g/t Co) is the first Co-rich Cu-Zn-Pb skarn deposit discovered in the Gangdese metallogenic belt. However, the trace and minor element geochemistry of the sulfides in this deposit has not been studied, limiting further understanding of elements' …
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approach for Cu-Zn and Cu-Zn-Pb ores (i.e., depression of sphalerite using zinc sulfate) is effective in Cu/Zn separation in the processing of the copper ores excavated from PCDs
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There are three major carbonated-hosted Pb–Zn ore fields on the Yangtze Craton margin (Fig. 1b): the Upper Yangtze Pb–Zn province, Mayuan Pb–Zn ore-field, and Huayuan ore-field 26.
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Download scientific diagram | Ratio of Cu/Pb+Zn and Cu in the MVT, SEDEX and VMS ores (by open source). Average metal contents are shown for different types of host rock – volcanic lavas and ...
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Cu and Au-Cu-Pb-Zn deposits occur along the Chesney Fault zone. There is also a regional scale (over 50 km) metal zonation of deposits along the eastern margin of the Cobar Basin, marked by increasing
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The Tonggou deposit is a porphyry Cu and vein-type Cu-Zn mineralization system located in the Bogda Orogenic Belt, north of Eastern Tianshan. Systematic fluid inclusion analyses were performed on granular quartz from the magnetite–quartz stage and pyrite–chalcopyrite–quartz stage from the porphyry Cu mineralization. During the early stage …
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An ore deposit may include ores of metals (Cu, Zn, Pb, etc.); ores of gemstones; ores of minerals used as feedstock for production of industrial chemicals, e.g. Aluminium-bearing abrasives and refractory products; ores of minerals used in …
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In this study, four metal- and sulfur-saturated model fluids with varying salinities and redox states were simulated in the Fe-Cu-Pb-Zn-Au-S-C-H-O system, over a wide pressure-temperature (P-T) range (50–650 °C, 0.8–5.0 kbar), in order to compare the roles of chloride …
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The cogenetic nature of the two mineralisation types, the relative absence of Cu-Ni-As-rich ores from most of the larger Irish-type Zn-Pb deposits compared to expectations derived from probable ...
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Stable isotope and fluid inclusion studies were undertaken to assess whether the deep ores resulted from a single fluid reservoir that evolved from Cu-Ni-Co-rich to Zn-rich to Pb-rich or are instead products of distinct fluids unrelated to the stratigraphically higher, main Pb-rich ores of the district. Sphalerite-hosted fluid inclusions from the lower orebody appear to be …
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On the basis of A/CNK ratio (<1.1), the Arai granite belongs to metaluminous type of calc-alkali composition (K 2 ... (iron ore, Zn-Cu-Pb and placer gold). The iron ore prospect owned by PT MAJU, is located about 1 km northwest of Jangkat Village. Iron ores as hematite and magnetite have been exploited (Figure 6a). However, it is now terminated ...
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The Nannihu ore field is largely represented by the Nannihu Mo-W deposit, Luotuoshan Zn-Cu-W deposit, and Lengshuibeigou Pb-Zn-Ag deposit. Mo-W mineralization at Nannihu occurs in the contact zone between the Nannihu intrusion and the wall rocks, showing typical characteristics of the porphyry-type deposit.
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The Zn-Pb orebodies are hosted in the skarn developed between the Dawabulake intrusion and the carbonate rocks of the Hudukedaban Formation (Fig. 4 A-B). The Dawabulake intrusion is occurred as quartz monzonite in the Halegati Fe-Cu ore-field and as granodiorite in the Muzuke Zn-Pb ore-field (Fig. 4 A). A total of 15 Fe-Cu-Zn-Pb orebodies that ...
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Skarn deposits, among the world's most abundant and economically significant ore types, are categorized into seven main groups based on key metals: Fe, Au, Cu, Zn, W, Mo, and Sn skarns (Einaudi et al., 1981, Meinert et al., 2005).They are also important types of deposit for high-grade iron and copper (Li et al., 2019a).Especially in China, iron and copper skarn …
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There are numerous examples of ICP-OES application, including: determination of Fe, Co, Mn, Cu, Pb and Zn in ores [11], selected metals in surface waters [12], determination of steel composition ...
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Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, the global annual …
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208 Pb/206Pb, 207 206Pb and 206Pb/204Pb isotopic ratios (Gulson and Mizon, 1979; Vaasjoki, 1985; Gulson, 1986). Several studies have recently been devoted to the investigation of …
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A comprehensive recovery process for the selective separation and enrichment of copper, zinc and iron minerals from a polymetallic ore was developed, which consisted of copper flotation, zinc flotation, and iron magnetic separation, and the adsorption mechanism of the copper collector Z-200 (O-isopropyl-N-ethyl thionocarbamate) was also studied in this work. The …
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Lead-dominant carbonate replacement deposits (Pb > Zn, Ag ± Cu ± Au) occur among other deposit types, often near porphyritic intrusions. They generally contain higher …
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Geochemistry of Mineral Deposits. J.E. Mungall, in Treatise on Geochemistry (Second Edition), 2014 13.8.1 Introduction. Magmatic ore deposits are masses of igneous rock enriched in useful chemical elements to such an extent that it is feasible to mine them at a profit. To be considered an ore, an accumulation of an element must combine high grade with large tonnage and must …
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Massive Pb-Zn ores (type A) occur in the upper Pb-Zn orebodies (Fig. 4 A, B). They are hosted in tuffaceous sandstone and transition to felsic volcanic rocks. Pyrite (Py-A), galena (Gn-A) and sphalerite (Sph-A), with subordinate chalcopyrite (Cp-A) are the dominant sulfides (Fig. 6 A). Colloidal pyrite and arsenopyrite-pyrite assemblage are ...
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Flotation of Gold Ores. Srdjan M. Bulatovic, in Handbook of Flotation Reagents: Chemistry, Theory and Practice, 2010 Publisher Summary. In spite of the lack of basic research on flotation of gold-bearing ores, the flotation technique is used not only for upgrading of low-grade gold ore for further treatment, but also for beneficiation and separation of difficult-to-treat gold ores.
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Cu skarns: Cu, Au, Ag in proximal zones; Pb, Zn, and Ag in distal zones; Co, As, Sb, Bi, and Mo anomalies in some deposits; calcic exoskarns are generally high in iron and sulfur; low in …
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Two key factors are considered vital to the formation of economic ores of the Keketale Pb–Zn deposit, namely the original Devonian banded pyrite formed in a VMS system and subsequent Permian deformation and metamorphic processes that liberated Cu, Pb, Zn, Au and Ag from the lattice of type-A pyrite to form galena, sphalerite and chalcopyrite with minor …
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The Co/Ni ratio of pyrite and Zn/Cd ratio of sphalerite can be used to discriminate the VMS, magmatic or SEDEX origins for ore deposits. The Zn/Cd ratio of the sphalerites and Co/Ni ratio of pyrites provided the evidence for SEDEX style mineralization in …
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The Viburnum Trend of southeast Missouri is a world-class, Pb-Zn-Cu MVT district. Its sulfide ores are generally lead-dominant (Pb:Zn > 5) and occur mainly in the upper portion of the Upper Cambrian Bonneterre Dolomite, typically within and above the stromatolite reef-grainstone carbonate facies (Gerdemann and Myers, 1972) (Fig. 1 A and B
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There are two ore-forming stages for Cu-Pb-Zn mineralization in the Huogeqi deposit, including the main-stage Cu-Pb-Zn mineralization and late-stage Cu mineralization …
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In contrast, pyrites from gold and Pb–Zn–(Ag) deposits in the Qingchengzi orefield hosted by Precambrian basement have high and variable δ 34 S values (9.7 ‰ to 12.7 ‰ for the Wandigou altered rock-type gold deposit and 4.7 ‰ to 8.5 ‰ for the Xiquegou Pb–Zn deposit and the Zhenzigou Pb–Zn–Ag deposit), identical to those of ...
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Dissolution of Cu and Zn-bearing ore by indigenous iron-oxidizing bacterial consortia supplemented with dried bamboo sawdust and variations in bacterial structural dynamics: A new concept in bioleaching ... (Cu, Zn, Cd, and Pb) and several other hazardous and toxic elements are extensively distributed in soils and rocks in miniature quantity ...
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