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The article describes magnetite–sulfide assemblages of minerals containing native gold and tellurides in the Pb–Zn–Fe ores of the Aktash skarn deposit in Western Karamazar (Tajikistan).…
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The giant mid-Miocene Cerro de Pasco Cordilleran polymetallic (Zn-Pb-Ag-Cu-Bi) deposit in central Peru formed during three successive mineralization stages resulting in low- to...
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The results demonstrate that the ore consists of 35 categories of minerals, assaying Cu 7.99%, Pb 9.39%, and Zn 1.96% in the forms of chalcopyrite, galena, and sphalerite, respectively, and silver assaying 157.9 g/t is closely associated with these sulfides; sulfides are present in amounts of 80.31% of the total, traditional gangues only 19.69% ...
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The newly discovered Panjiaduan Cu–Pb–Zn deposit (9.3 Mt; at 1.36% Cu, 2.90% Pb, 3.80% Zn and 38.12 g/t Ag), located in the SE segment of the SGXR, is primarily hosted in fracture zones in volcanic rocks and granodiorite of the Manitu Formation.
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ranked first in gold and silver production in New ... gold ore from the Lordsburg district can be shipped directly to smelters as siliceous flux. TYPES OF ORE DEPOSITS ... Cu, Pb, Zn, Ag 17,000* 0.0 Kimball,,'.c.21 tri Epithermal veins Ag, Au 500,000 1.1 Animas, Gillespie Big
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Porphyry Cu ± Mo ± Au deposits are often temporal-spatial-genetically associated with epithermal Ag-Au polymetallic veins, as best exemplified by porphyry Cu systems in the Cordillera and Andes (e.g., Sillitoe, 2010).These porphyry-related polymetallic veins formed late in the porphyry Cu systems under epithermal conditions (<375 °C), and occur in the periphery of …
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This corridor is zoned from Cu-(Au) ores in its inner parts (Smelter deposit) to peripheral Zn- Pb-(Ag) ores (Colquijirca deposit). The Smelter-Colquijirca corridor has undergone minor erosion, …
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Gold-bearing skarns may contain significant amounts of numerous other commodities, including copper, lead, zinc, and iron and (or) they may have been mined in the past for these or other …
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Many new discoveries of base and precious metal (Ag-Pb-Zn-Cu) veins in the Great Hinggan Range ore district have made this region the most important Ag-Pb-Zn metallogenic …
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Zn-Pb-Ag mineral deposits are the products of hydrothermal ore-forming systems, which are restricted in time and space. In Australia, these deposits formed during three main periods at ~2.95, 1.69 ...
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In addition to the Huogeqi, other cases of orogenic-type base metal deposits have also been reported worldwide, including the Coeur d'Alene Cu-Ag deposit in the Western American Craton (Leach et al., 1988), the Elura Ag-Pb-Zn deposit in New South Wales, Australia (De Roo, 1989), the Tieluping Ag-Pb deposit in Henan Province, China (Chen et al ...
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In most years, Hidalgo County has ranked first in gold and silver production in New Mexico and second in copper. This article is a summary of a bulletin being pre-pared for publication by the …
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PDF | On Jun 1, 2024, Jia–Jie Xiong and others published Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold ore field, Eastern Kunlun Orogen, NW China: Insights from ...
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Here, we report Rb-Sr age of sphalerite and pyrite from the massive sulfide Ag-Pb-Zn-(Cu) ores, zircon U-Pb age for the granite porphyry, C-O isotopes of hydrothermal calcite, and S-Zn isotopes of ...
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Drill core sulfide ore samples (weighing about 60 kg) were received from Garpenberg, Boliden Mineral AB, Sweden. Garpenberg is an underground mine where the complex Zn-Pb-Ag-Cu-Au ore (Table 2) is mined from 500 to 1400 m below the …
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This indicates that the ore-forming metals (esp. Cu, Pb and Zn) ... 2001; Chen et al., 2001, Chen et al., 2012; Groves et al., 2016; Deng and Wang, 2016). The Altay (Mongolian: Gold Mountains) Orogen, as an important part of the CAOB, is endowed with orogenic gold deposits (e.g., Duolananasayi, Saidu, Sarekuobu and Saerbulake), especially along ...
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Cu (%) Pb (%) Zn (%) Sunset Mine: G777523: 13.3: 2260: 3.85: 0.387: 0.0806: G777622: 8.13: 2380: 3.02: 0.473: 0.233: ... and Zn-OG62, which are aqua regia digests with ore grade ICP finishes. About K2 Gold. K2 is a proud member of Discovery Group and currently has three projects in Southwest USA and the Yukon. The Si2 Gold Project is located in ...
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The Bou Madine Au–Ag–Pb–Zn ± Cu epithermal deposit in the Ougnat Pan-African inlier of the eastern Anti-Atlas occurs within the lower unit of the late Neoproterozoic Tamerzaga-Timrachine ...
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The Yinshan Cu–Au–Pb–Zn–Ag deposit is located in the famous Dexing copper–gold polymetallic district in South China (Fig. 1). This polymetallic district consists of the Middle Jurassic (ca. 170 Ma) Yinshan Cu–Au–Pb–Zn–Ag deposit (950,000 tons of Cu and 107 tons of Au) (JGEB, 1996, Yinshan Lead-Zinc Mine, 1993, Wang et al., 2011b), the Middle …
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Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold ore field, Eastern Kunlun Orogen, NW China: Insights from phlogopite Ar–Ar and zircon U–Pb dating and Sr–Nd–Pb–Hf isotopes ... Ding, Ore-forming fluid of the Guoluolongwa gold deposit in Dulan County, Qinghai Province, J. Jilin Univ. (Earth Sci. Ed.), № 43, с. 415
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The analysis of gold grains and geochemical soil aims to determine the differences in the characteristics of Au-Cu-PB-ZnAg and the morphology of gold grains obtained from panning …
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At the start of production in 1978, in situ ore reserves amenable to open-cut mining totaled 6.3 million metric tons of complex ore with an average grade of 1.7 percent Cu, 5.5 percent Pb, 14.4 percent Zn, and 89 ppm Ag, and 3.7 million metric tons of stockwork copper ore averaging 1.9 percent Cu.The deposit occurs in Middle to Upper Silurian ...
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A newly identified Permian distal skarn deposit in the Western Tianshan, China: New evidence from geology, garnet U-Pb geochronology and S-Pb-C-H-O isotopes of the Arqiale Pb Zn Cu deposit[J]. Ore Geology Reviews, 2022, 143: 104754. doi: 10.1016/j.oregeorev.2022.104754
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Determining the ore-forming processes of Dongshengmiao Zn-Pb-Cu deposit: Evidence from the linear discriminant analysis of pyrite geochemistry December 2023 Ore Geology Reviews 163:105782
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In comparison, the sulfides from the Pb–Zn–(Ag) deposits have higher 207 Pb/ 204 Pb values (15.6637 to 15.7331, mostly > 15.70) than the Fe–(Cu) deposits (15.6186 to 15.6848) and the Pb–Zn–Fe–Cu deposits (15.6163 to 15.7197), indicating that the metals of Pb–Zn–(Ag) deposits were derived from the upper-crust magma, whereas the ...
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A new method to enhance gold recovery is proposed. Keywords Gold; Improving recovery; Pb–Zn sulfide ore; Selective activation; Organic acid 1 Introduction Auriferous sulfides and porphyry copper ores have signif-icant contributions to the gold production all over world [1]. Pre-treatment such as floatation, gravity concentration,
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In this study, we report and synthesize the geological characteristics and metallogenic chronology of the typical Pb–Zn– (Ag), Pb–Zn–Fe–Cu, and Fe– (Cu) deposits in …
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Located approximately 180 km northwest of Stockholm (Fig. 1), the Lappberget Zn–Pb–Ag–(Cu–Au) deposit is part of Boliden Mineral AB's Garpenberg mine and is Sweden's oldest still-operating mine.It is located in the Bergslagen mining district, which hosts a wide variety of metamorphosed and deformed, magmatic-hydrothermal, and hydrothermal mineral deposits …
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The Tian Shan is the second largest gold province in the world (Yakubchuk et al., 2002, Xue et al., 2020) and an important part of the world's third-largest gold-antimony metallogenic belt (Tu, 1990; Liu et al., 2019).It has not only hosted numerous world-class gold deposits (Muruntau, Kumtor, Zarmitan, etc.), but several large and medium Au-Sb deposits …
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