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Journal articles on the topic 'Gold-telluride deposit'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Bushuev, Yackov Yur’evich, and Vasilii Ivanovich Leontev. "The Geochemical Features of Epithermal Gold-Telluride (Au-Te) Ores of the Podgolechnoe Deposit (Central Aldan Ore District, Yakutia)." Key Engineering Materials 743 (July 2017): 422–25. http://dx.doi.org/10.4028/www.scientific.net/kem.743.422.

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The Central Aldan ore district is a geologically unique area, representing the conjunction zone of the ancient structures of the Archean–Proterozoic crystalline shield, overlain by the Vendian–Cambrian sedimentary cover. The latter was formed in the Mesozoic by intensive alkaline magmatism. Within the Central Aldan ore district, most of primary gold-ore deposits are confined to the sedimentary cover. Until recently it was considered that only ancient complexes in the crystalline basement contain commercial Au-U mineralization. As a result of the geological exploration works over the period of 2003–2006, the Podgolechnoe deposit was discovered. Gold mineralization in this deposit occurs both in rocks of sedimentary cover and crystalline basement. Ore bodies in rocks of the crystalline basement (A-type alkaline deposits) contain epithermal gold-telluride (Au-Te) mineralization, which is new for Central Aldan ore district. This work presents results of the study of geochemical composition of the Podgolechnoe deposit ores and their comparison with typical epithermal gold-ore deposits. In total, 15 samples were studied. The homogeneity of the sample collection, the correlation between Au and other elements, the enrichment coefficients of elements-admixtures, and the REE distribution were analyzed. It was established that gold ores of the Podgolechnoe deposit are geochemically heterogeneous, but, in general, they correspond to the geochemical spectrum characteristic of the gold ores of A-type epithermal deposits. In contrast to Au-U deposits, common in the studied area, ores of the Podgolechnoe deposit show no correlation between gold and uranium.

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2

Plotinskaya, O. Yu. "Mineralogy of precious metals in ores of the Yubileinoe porphyry gold deposit (Kazakhstan)." МИНЕРАЛОГИЯ (MINERALOGY), no. 3 (October 28, 2020): 44–53. http://dx.doi.org/10.35597/2313-545x-2020-6-3-4.

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Gold and silver mineralogy is studied in ores of the Yubileinoe porphyry gold deposit (Kazakhstan). Native gold is the major gold mineral. Its fneness varies from 970‰ in magnetite-hematite assemblage to 733–860‰ in pyrite-chalcopyrite assemblage. Silver occurs as admixture in native gold and, occasionally, as silver telluride. Native gold is associated with bi and Pb minerals: rucklidgeite, galenaclaustalite, and tetradymite-kawazulite. According to chlorite geothermometry, the Au, Ag and bi minerals precipitated at temperatures of 250-230 °С. These features are typical of the porphyry gold deposits worldwide. Figures 5. Tables 3. References 17.

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3

Leontev, Vasilii Ivanovich, and Yackov Yur’evich Bushuev. "Ore Mineralization in Adular-Fluorite Metasomatites: Evidence of the Podgolechnoe Alkalic-Type Epithermal Gold Deposit (Central Aldan Ore District, Russia)." Key Engineering Materials 743 (July 2017): 417–21. http://dx.doi.org/10.4028/www.scientific.net/kem.743.417.

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The Podgolechnoe deposit, which belongs to the alkalic-type (A-type) epithermal gold-ore deposits, lies in the Central Aldan ore district (Russia). Gold-ore mineralization is associated with a volcano-plutonic complex made of rocks of the monzonite-syenite formation (J3–K1). The ore bodies are localized in the crushing zones developed after crystalline schists, gneisses, and granites of the crystalline basement complexes (Ar–Pr). Metasomatic alterations in host rocks have potassic specialization. Vein ore minerals are adular, fluorite, roscoelite, sericite, and carbonate. Ore minerals are pyrite, galena, sphalerite, cinnabar, brannerite, monazite, bismuth telluride, stutzite, hessite, petzite, montbraite, and native gold. The deposit has been explored as a gold-ore deposit, however, due to complex composition of ores there is a need to reveal the possibilities of the integrated development of this deposit. This could provide for a reserve increment and an increase in the gross recoverable value of ores due to the extraction of associated components.

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4

Vikent’eva, Olga V., Vladimir V. Shilovskikh, Vasily D. Shcherbakov, Ilya V. Vikentyev, and Nikolay S. Bortnikov. "A Rare Au-Sb Telluride Pampaloite from the Svetlinsk Gold-Telluride Deposit, South Urals, Russia." Minerals 12, no. 10 (October 9, 2022): 1274. http://dx.doi.org/10.3390/min12101274.

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Pampaloite AuSbTe, a rare gold-antimony telluride that was first described in 2019 from the Pampalo gold mine, Finland, was found in samples from the large Svetlinsk gold-telluride deposit, South Urals, Russia. Optical microscopy, scanning electron microscopy, electron microprobe analysis, reflectance measurements, electron backscatter diffraction and Raman spectroscopy were used to study eight grains of pampaloite. Pampaloite forms inclusions (5–30 μm) in quartz together with other tellurides (typically petzite), native gold and, less often, sulfides. In reflected light, pampaloite is white or creamy white in color with weak anisotropism and without internal reflections. The empirical formula calculated on the basis of 3 apfu is Au0.97–1.07Ag0–0.02Sb0.96–1.04Te0.96–1.04 (n = 18). The holotype pampaloite structure was used as a reference and provided the perfect match for an experimental EBSD pattern (12 bands out of 12, mean angle deviation 0.19°). Raman spectra are reported for the first time for this mineral. All studied pampaloite grains exhibit vibrational modes in the range 60–180 cm−1. Average peak positions are 71, 108, 125, 147 and 159 cm−1. According to experimental data for the Au-Sb-Te system, we estimate the upper temperature range of pampaloite crystallization at the Svetlinsk deposit to be 350–430 °C.

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5

Bushuev, Yackov Yur’evich, Vasilii Ivanovich Leontev, and Maria M. Machevariani. "Geochemical Features of Au-Te Epithermal Ores of the Samolazovskoye Deposit (Central Aldan Ore District, Yakutia)." Key Engineering Materials 769 (April 2018): 207–12. http://dx.doi.org/10.4028/www.scientific.net/kem.769.207.

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The Samolazovskoye deposit (Central Aldan ore region, Russia) is confined to the porphyry syenite lopolith (J3-K1), localized between the granitic gneiss Archean basement and the series of the Vendian-Lower Cambrian carbonate cover rocks. Four hydrothermal-metasomatic parageneses have been identified within the deposit: skarn paragenesis, developed on the syenites and carbonate cover rocks contact; so called «gumbaite» paragenesis (kalifeldspar + fluorite + carbonate ± quartz), superimposed on the intrusive massif rocks; feldspatholitic paragenesis (quartz + feldspar), developed in the granitic gneisses of the crystalline basement; ore-bearing fluorite-roscoelite-carbonate-quartz paragenesis, superimposed on all of the above. The article compares ores evolved within gumbaitic syenites, basement feldspatholites and breccias, composed of all the above-mentioned rocks clasts. The geochemical study of given ores, resulted in two identified elements associations: gold-telluride (Au, Sb, As, V, Tl, Te, Hg, W) related to the fluorite-roscoelite-carbonate-quartz hydrothermal-metasomatic paragenesis and (uranium)-polymetallic (Bi, Cu, Pb, Zn, Mo, Se, Li, U), associated with the syenites gumbaitization (?). There is only gold-telluride association within the basement ore bodies, while the ore bodies localized in the syenites intrusion hold both associations, along with the Au and Ag contents being an order of magnitude higher. Breccia ores are characterized by the maximum concentrations of the ore elements. Gold-telluride association of the Samoazovsky deposit ores is specific to epithermal Au-Te mineralization associated with alkaline (A-type) magmatism.

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6

Vikent’eva, Olga, Vsevolod Prokofiev, Andrey Borovikov, Sergey Kryazhev, Elena Groznova, Mikhail Pritchin, Ilya Vikentyev, and Nikolay Bortnikov. "Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals." Minerals 10, no. 1 (December 30, 2019): 37. http://dx.doi.org/10.3390/min10010037.

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The large gold-telluride Svetlinsk deposit (~135 t Au) is considered to be a nontraditional one in the Urals and its origin is debated. A specific feature of the deposit is the abundance of various tellurides, such as tellurides of Fe, Ni, Pb, Sb, Bi, Ag, and Au. The new data of microthermometry, Raman spectroscopy, LA-ICP-MS, and crush-leach analysis (gas and ion chromatography, ICP-MS) for fluid inclusions as well as O-isotope data for quartz were obtained for the construction of PTX parameters of ore-formation and fluid sources in the deposit. Mineralisation was formed at a wide range of temperature and pressure (200–400 °C, 1–4 kbar) and from contrasting fluids with multiple sources. At the early stages, the magmatic fluid evolved during its ascent and phase separation and the fluid derived from the host rock decarbonation and dehydration were involved in the hydrothermal system. In addition, mantle-derived fluid might be involved in the ore-forming process during gold-telluride precipitation as well as heated meteoric waters during the late stages. Early fluids were rich in H2S, S0, and CH4, while the Au-Te mineralisation was formed from N2-rich fluid.

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7

Bindi, Luca, and Curzio Cipriani. "Museumite, Pb5AuSbTe2S12, a new mineral from the gold-telluride deposit of Sacarimb, Metaliferi Mountains, western Romania." European Journal of Mineralogy 16, no. 5 (October 18, 2004): 834–37. http://dx.doi.org/10.1127/0935-1221/2004/0016-0835.

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8

Paduchina, Yu A., N. S. Chukhareva, K. A. Novoselov, E. E. Palenova, E. V. Belogub, I. A. Blinov, D. A. Artemyev, and M. A. Rassomakhin. "Precious metal mineralogy of the Murtykty gold deposit, South Urals." МИНЕРАЛОГИЯ (MINERALOGY) 5 (July 16, 2019): 57–68. http://dx.doi.org/10.35597/2313-545x-2019-5-2-57-68.

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Ore mineralogy of the Murtykty gold deposit is presented in the paper and main attention is paid to the mode of occurrence of precious metals. Ores are pyrite-bearing quartz-chlorite (±sericite, ±carbonate of the dolomite-ankerite series) metasomatites with variable ratios between rock-forming minerals. Pyrite is the major sulfde; sphalerite, galena and chalcopyrite are secondary in abundance. Rare minerals include pyrrhotite, arsenopyrite, altaite, coloradoite, hessite, petzite, calaverite, volynskite, rucklidgeite, and native gold. The Ag content of native gold ranges from 6.11 to 35.32 wt. %. Signifcant amount of Au and Ag occurs in a telluride form: hessite Ag2Te, petzite Ag3AuTe2, calaverite AuTe2, and volynskite AgBiTe2. The refractory features of sulfde ores are caused by diverse modes of occurrences of precious metal.

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9

Izvekova, A. D., B. B. Damdinov, L. B. Damdinova, and M. L. Moskvitina. "Gold–Telluride Mineralization in Ore of the Pionerskoe Gold–Quartz Deposit (Eastern Sayan, Russia)." Geology of Ore Deposits 63, no. 6 (November 2021): 579–98. http://dx.doi.org/10.1134/s1075701521060027.

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10

Ahmad, M., M. Solomon, and J. L. Walshe. "Mineralogical and geochemical studies of the Emperor gold telluride deposit, Fiji." Economic Geology 82, no. 2 (April 1, 1987): 345–70. http://dx.doi.org/10.2113/gsecongeo.82.2.345.

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11

Ahmad, M., and J. L. Walshe. "Wall‐rock alteration at the Emperor gold‐silver telluride deposit, Fiji." Australian Journal of Earth Sciences 37, no. 2 (June 1, 1990): 189–99. http://dx.doi.org/10.1080/08120099008727919.

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12

Dolgopolova, A., A. Mizerny, M. Mizernaya, and R. Seltmann. "The Sekisovka gold-telluride deposit in Eastern Kazakhstan: tectonics and magmatism." Applied Earth Science 125, no. 2 (April 2, 2016): 81–82. http://dx.doi.org/10.1080/03717453.2016.1166623.

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13

Spry, P. G., and S. E. Thieben. "The distribution and recovery of gold in the Golden Sunlight gold-silver telluride deposit, Montana, U.S.A." Mineralogical Magazine 64, no. 1 (February 2000): 31–42. http://dx.doi.org/10.1180/002646100549111.

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AbstractThe gold balance in an ore deposit where the ore is treated by cyanide is the sum of the ‘visible gold’ that is amenable to cyanidation and ‘visible gold’ and the ‘invisible gold’, which are not amenable to cyanidation. Petrographic analyses, electron and ion microprobe as well as scanning electron microscope studies of ore from the Golden Sunlight deposit, Montana, suggest that periods of relatively poor gold recoveries are primarily due to the presence of inclusions, <25 µm in size, of native gold, petzite, calaverite, buckhornite and krennerite. These are encapsulated in cyanide insoluble grains of pyrite, chalcopyrite and tennantite and are present in the tailings. This contribution probably accounts for 3–25% of the unrecoverable gold processed during the life of the mine. Minor amounts (6–7%) of ‘invisible gold’, as indicated by ion microprobe studies and the presence of up to 5% ‘visible gold’ in buckhornite, which is rare in nature, appears to account for the remainder of the gold budget.

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14

Nekrasov, Е. М. "Principles governing the selection of ore regions for gold deposit search." Proceedings of higher educational establishments. Geology and Exploration 63, no. 6 (June 20, 2022): 77–86. http://dx.doi.org/10.32454/0016-7762-2020-63-6-77-86.

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Background. In 2020, the Auditing Chamber of the Russian Federation, based on a representative report by its expert analysts M. Men’ and A. Kaulbars, proposed expanding the search for deposits of a number of metals, including gold. Since the fund of easily discovered gold deposits coming to the surface has been significantly reduced, prospecting of ore regions most promising in terms of gold deposits becomes highly relevant.Aim. In connection with the above task, it seems expedient to outline territories within the currently known gold provinces, where the prerequisites and signs of gold ores could be detected with minimal expenditures for their subsequent verification by drilling.Materials and methods. The study involved calculating the shares of the world’s gold reserves attributable to each type of distinguished deposits located in various rocks. The extensive experience of prospecting work carried out in recent decades and culminated in the discovery of the Muruntau deposit in Uzbekistan, a world leader in the development of gold deposits, and Russian largest and giant deposits – Natalka, Sukholozhskoe, Nezhdaninsky, Degdekansky, Maisky, Oktyabrsky, Pavlik, Kupol, as well as the Bakyrchik deposit in Kazakhstan and others, clearly shows that the most promising and largest deposits are selectively localized in favourable rocks and largescale disjunctive dislocations, or faults. To identify favourable rocks, the distribution of the world’s gold reserves in various rocks was analysed, as well as the distribution of reserves in the areas of the largest deposits in ore-bearing faults as the most favourable fault types containing the most powerful and extended gold ore bodies.Results. A comparison of the shares of reserves has shown that the most promising for prospecting are those rock complexes containing the highest proportions of the world’s gold reserves. The article presents the distribution of shares of the world’s gold reserves for near surface and deep-formed deposits of various types. The main share of the world’s gold reserves in deeply formed deposits is shown to be concentrated in the Phanerozoic strata of sandy-clayey composition and in the interlayers of easily replaceable carbonate and amphibolite shales developed in the Proterozoic quartzite-phyllite rocks. The reserves of near-surface gold-silver and gold-telluride ores are selectively located in the young Mesozoic-Cenozoic volcanic rocks of basalt-andesite composition, accompanied by dikes, subvolcanic stocks and the pipes of explosive breccias with large-scale gold ore bodies confined to them. Thus, the most promising areas for prospecting new deposits are those composed of the mentioned rock complexes and crossed by ore-bearing faults, in the zones of which the main largest ore bodies are concentrated. Conclusion. The conducted study into the distribution of the world’s gold reserves in the deposits of various types, as well as the selective localization of ores in deposits with the main and large scale ore bodies in the zones of ore-bearing faults (and, accordingly, containing the concentration of the main share of reserves in a particular deposit), provides a basis for discovering new deposits of the precious metal with minimal expenditures, thus contributing to increasing the resource base of the Russian Federation.

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15

Chen, Xiaolan, Zhenzhu Zhou, Yong Chen, Jackson Barrier, and Matthew Steele-MacInnis. "Fluid boiling during high-grade gold deposition in an epithermal gold-telluride deposit, Guilaizhuang, China." Journal of Geochemical Exploration 240 (September 2022): 107048. http://dx.doi.org/10.1016/j.gexplo.2022.107048.

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16

Poutiainen, M., and P. Groenholm. "Hydrothermal fluid evolution of the Paleoproterozoic Kutemajarvi gold telluride deposit, Southwest Finland." Economic Geology 91, no. 8 (December 1, 1996): 1335–53. http://dx.doi.org/10.2113/gsecongeo.91.8.1335.

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17

Pals, D. W., and P. G. Spry. "Telluride mineralogy of the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji." Mineralogy and Petrology 79, no. 3-4 (December 1, 2003): 285–307. http://dx.doi.org/10.1007/s00710-003-0013-5.

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18

Murzin, V. V., G. A. Palyanova, E. V. Anikina, and V. P. Moloshag. "Mineralogy of noble metals (Au, Ag, Pd, Pt) in Volkovskoe Cu-Fe-Ti-V deposit (Middle Urals, Russia)." LITHOSPHERE (Russia) 21, no. 5 (October 31, 2021): 653–59. http://dx.doi.org/10.24930/1681-9004-2021-21-5-643-659.

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Research subject. The mineral compositions of titanomagnetitic (apatite, titanomagnetite) and copper-titanomagnetitic (bornite, chalcopyrite, apatite, titanomagnetite) ores of the Volkovskoe Cu-Fe-Ti-V deposit (Middle Urals, Russia).Methods. The research was carried out using a Jeol JSM-6390LV scanning electron microscope and X-ray spectral microanalyzers JXA-5 (Jeol) at the Geoanalitik Collective Use Center of the IGG UB RAS. Results and conclusions.Native gold (with ≤ 0.3 wt % Pd, 0.2–0.4 wt % Cu; fneness 800–914 ‰), tellurides of Pd, Au and Ag (merenskyite, keithconnite, sylvanite, hessite) and Pt arsenide (sperrylite) were found in the copper-titanomagnetitic ores. For the frst time, two generations of native gold (fneness 1000 and 850–860 ‰) and palladium telluride (keithconnite Pd3-xTe) were detected in titanomagnetitic ores. The sequence of ore mineral formation and the features of their genesis were revealed. Native gold (fneness 1000‰) in the form of microinclusions in titanomagnetite was attributed to the magmatic stage. Noble metal minerals, intergrown with copper sulfdes (bornite, chalcopyrite, digenite) and associated with late hydroxyl-bearing minerals (amphibole, epidote, chlorite), are superimposed in relation to the magmatic minerals (pyroxene, plagioclase, hornblende, apatite, titanomagnetite, ilmenite, etc.) of these ores. Merenskyite, sperrylite, high fneness gold (800–914 ‰), as well as carrolite, cobaltite, copper-cobalt telluride and bismuth tellurium-selenide kawazulite Вi2Te2Se are syngenetic with copper sulfdes. The Au-Ag tellurides were deposited later than these minerals. It is shown that the high fugacity of tellurium, which binds Pd, Au, and Ag into tellurides, prevents the occurrence of native gold containing high concentrations of palladium and silver.

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19

Sokerina, N. V., R. I. Shaybekov, S. N. Shanina, and S. I. Isaenko. "Fluid mode of gold-telluride-palladium mineralization formation in Krutoy deposit (Pay-Khoy)." Vestnik of Institute of Geology of Komi Science Center of Ural Branch RAS 8 (2016): 9–13. http://dx.doi.org/10.19110/2221-1381-2016-8-9-13.

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20

Zhaoghong, Zhang, and Mao Jingwen. "Geology and Geochemistry of the Dongping Gold Telluride Deposit, Heibei Province, North China." International Geology Review 37, no. 12 (December 1995): 1094–108. http://dx.doi.org/10.1080/00206819509465441.

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21

Spry, P. G., F. Foster, J. S. Truckle, and T. H. Chadwick. "The mineralogy of the Golden Sunlight gold-silver telluride deposit, Whitehall, Montana, U.S.A." Mineralogy and Petrology 59, no. 3-4 (1997): 143–64. http://dx.doi.org/10.1007/bf01161857.

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22

Zhmodik, Sergey Mikhailovich, Mikhail Mikhailovich Buslov, Bulat Batuevich Damdinov, Anatoli Georgievich Mironov, Valentin Borisovich Khubanov, Molon Gimitovich Buyantuyev, Ludmila Borisovna Damdinova, Evgeniya Vladimirovna Airiyants, Olga Nikolaevna Kiseleva, and Dmitriy Konstantinovich Belyanin. "Mineralogy, Geochemistry, and Geochronology of the Yehe-Shigna Ophiolitic Massif, Tuva-Mongolian Microcontinent, Southern Siberia: Evidence for a Back-Arc Origin and Geodynamic Implications." Minerals 12, no. 4 (March 23, 2022): 390. http://dx.doi.org/10.3390/min12040390.

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The new results have been represented of mineralogical–geochemical and geochronological studies of rocks of the Yehe-Shigna ophiolite massif located in the Tuva-Mongolian microcontinent in the northern part of the Central Asian orogenic belt (Eastern Sayan, Southern Siberia). The Yehe-Shigna ophiolite massif is part of the Belsk-Dugda ophiolite belt. The structural position, age, and geochemical characteristics of the belt indicate its formation in the setting of the back-arc basin of the Shishkhid intraoceanic island arc, developing in the period of 810–750 million years. It is assumed that together with the same-age formations of the Oka accretion wedge and the Sarkhoi active margin, it formed on the convergent margin of the Gondwana supercontinent. Its basement is represented by the Archean-Early Precambrian crystalline rocks and carbonate cover (“Gargan Glyba”). The gold-bearing Neoproterozoic deposits with dominant gold-telluride assemblages are localization in large ophiolites thrust zones along with the frame of the “Gargan Glyba”. They are allochthonous with respect to the Late Neoproterozoic-Cambrian Tuva-Mongolian island arc of the Siberian continent. A similar type of gold deposit is probably worth looking for ophiolites thrust zones in other Precambrian Gondwana-derived microcontinents.

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23

Kadel-Harder, Irene M., Paul G. Spry, Audrey L. McCombs, and Haozhe Zhang. "Identifying pathfinder elements for gold in bulk-rock geochemical data from the Cripple Creek Au–Te deposit: a statistical approach." Geochemistry: Exploration, Environment, Analysis 21, no. 1 (October 26, 2020): geochem2020–048. http://dx.doi.org/10.1144/geochem2020-048.

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The Cripple Creek alkaline igneous rock-related, low-sulfidation epithermal gold telluride deposit, Colorado, is hosted in the 10 km wide Oligocene alkaline volcanic Cripple Creek diatreme in Proterozoic rocks. Gold occurs as native gold, Au-tellurides, and in the structure of arsenian pyrite, in potassically altered high-grade veins, and as disseminations in the host rocks.Correlation coefficients, principal component analysis, hierarchical cluster analysis and random forests were used to analyse major and trace element compositions of 995 rock samples primarily from low-grade gold mineralization in drill core from three currently operating pits (Wild Horse Extension, Globe Hill and Schist Island) in the northwestern part of the Cripple Creek diatreme. These methods suggest that Ag, As, Bi, Te and W are the best pathfinders to gold mineralization in low-grade disseminated ore. Although Mo correlates with gold in other studies and is spatially related to gold veins, molybdenite post-dated the formation of gold and is likely related to a late-stage porphyry overprint. These elements, in conjunction with mineralogical studies, indicate that tellurides, fluorite, quartz, carbonates, roscoelite, tennantite-tetrahedrite, pyrite, sphalerite, muscovite, monazite, bastnäsite and hübnerite serve as exploration guides to ore.

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24

Jian, Wei, Bernd Lehmann, Jingwen Mao, Huishou Ye, Zongyan Li, Jinge Zhang, Hai Zhang, Jiangwei Feng, and Yongzhe Ye. "TELLURIDE AND Bi-SULFOSALT MINERALOGY OF THE YANGZHAIYU GOLD DEPOSIT, XIAOQINLING REGION, CENTRAL CHINA." Canadian Mineralogist 52, no. 5 (October 2014): 883–98. http://dx.doi.org/10.3749/canmin.1400007.

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25

Sukach, V., L. Riazantseva, V. Somka, and S. Bondarenko. "Molybdenum mineralization of Serhiivka Au-Mo deposit (Middle Dnipro, Ukrainian Shield)." Мінеральні ресурси України, no. 1 (June 3, 2020): 3–11. http://dx.doi.org/10.31996/mru.2020.1.3-11.

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The article is devoted to molybdenum mineralization of the Eastern flank of Au-Mo Serhiivka deposit, located in the Middle Dnipro megablock of the Ukrainian Shield (USh). The generalized description of mineralization is performed on such important questions: discovery and exploration history, structure and composition of the host rocks, metamorphic and metasomatic alteration of rocks, structural position and localization conditions of molybdenum mineralization, ore composition, description of major ore minerals, morphology of mineralization and the most widespread views about its genesis. Molybdenum ores were discovered and named East-Serhiivka occurrence for the first time in 1974, before the discovery of gold mineralization, which occurred in 1985. Serhiivka deposit consists of two Mesoarchaean volcanic-plutonic associations (VPA) of different composition: the early mafic and the late felsic. The Eastern flank of the deposit, where the molybdenum mineralization is concentrated, is a structural knot similar to the lying letter “T”. It is formed by complex joint of the sub-latitudinal Serhiivka and sub-meridional Solone subvolcanic bodies and the East-Serhiivka massif of plagiogranitoids of the late VPA, which intrude basic rocks of early VPA. Molybdenum mineralization is localized in linearly elongated zones with a chaotic network of thin quartz, carbonate-quartz veinlets and poor (2–5 %) sulfide impregnation, including molybdenite. About 20 vein-impregnated ore zones have been recovered with up to 100–150 m thickness and 0,01 to 0,3 %, sometimes more than 1 % average molybdenum grade. The ores are subdivided into two major mineral types: 1) quartz-molybdenite; 2) quartz-sulfide-gold-molybdenite. The main components of ores molybdenite and native gold are associated with pyrite, chalcopyrite, magnetite, occasionally – pyrrhotite, arsenopyrite, scheelite, bismuth telluride, silver and others. Typical non-metallic minerals are quartz, carbonate, feldspar, chlorite, amphibole, biotite, sericite. It is supposed hydrothermal-metamorphogenic genesis of molybdenum (and gold) ores. Molybdenite and gold are rarely detected in the same intersections, which indicates separate genesis of these minerals. According to the accepted classification molybdenum mineralization is systemized as linear stockwork. Molybdenum ores of Serhiivka deposit are mostly considered as independent, separate from gold mineralization, potentially workable mine. It is the most prospective one in the Middle Dnipro region, USh and Ukraine in general. We suggest a comprehensive approach to studying, resource and reserves evaluation of Serhiivka deposit, taking into account the potential of both molybdenum and gold mineralization, as well as concentrations of rhenium and osmium in molybdenite. Geological exploration on the base of this approach will increase investment prospects of Serhiivka gold-molybdenum deposit.

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Bi, Shi-Jian, Jian-Wei Li, Mei-Fu Zhou, and Zhan-Ke Li. "Gold distribution in As-deficient pyrite and telluride mineralogy of the Yangzhaiyu gold deposit, Xiaoqinling district, southern North China craton." Mineralium Deposita 46, no. 8 (May 12, 2011): 925–41. http://dx.doi.org/10.1007/s00126-011-0359-2.

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Scherbarth, N. L., and P. G. Spry. "Mineralogical, Petrological, Stable Isotope, and Fluid Inclusion Characteristics of the Tuvatu Gold-Silver Telluride Deposit, Fiji: Comparisons with the Emperor Deposit." Economic Geology 101, no. 1 (January 1, 2006): 135–58. http://dx.doi.org/10.2113/gsecongeo.101.1.135.

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Yatimov, U. A., N. R. Ayupova, V. V. Maslennikov, V. A. Kotlyarov, and V. V. Shilovskikh. "Gold–Telluride Mineralization in Pb–Zn–Fe Ores of the Aktash Skarn Deposit (Western Karamazar, Tajikistan)." Geology of Ore Deposits 64, no. 4 (August 2022): 202–20. http://dx.doi.org/10.1134/s1075701522030072.

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MAGLAMBAYAN, Victor B., Daizo ISHIYAMA, Toshio MIZUTA, Akira IMAI, and Yohei ISHIKAWA. "Geology, Mineralogy, and Formation Environment of the Disseminated Gold-Silver Telluride Bulawan Deposit, Negros Occidental, Philippines." Resource Geology 48, no. 2 (June 1998): 87–104. http://dx.doi.org/10.1111/j.1751-3928.1998.tb00009.x.

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Xue, Yunxing, and Ian Campbell. "THE MINERALOGY OF THE BELLEROPHON-NELSON TELLURIDE-BEARING GOLD DEPOSIT, ST. IVES CAMP, YILGARN CRATON, WESTERN AUSTRALIA." Canadian Mineralogist 52, no. 6 (December 2014): 981–1006. http://dx.doi.org/10.3749/canmin.4352.

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31

Bindi, L., P. G. Spry, and G. Pratesi. "LENAITE FROM THE GIES GOLD-SILVER TELLURIDE DEPOSIT, JUDITH MOUNTAINS, MONTANA, USA: OCCURRENCE, COMPOSITION, AND CRYSTAL STRUCTURE." Canadian Mineralogist 44, no. 1 (February 1, 2006): 207–12. http://dx.doi.org/10.2113/gscanmin.44.1.207.

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32

Kerimli, U. "STAGES OF MINERALIZATION AND LOCALIZATION FACTORS OF THE AGYURT GOLD-COPPER-MOLYBDENUM DEPOSIT (LESSER CAUCASUS, AZERBAIJAN)." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 2 (89) (2020): 96–101. http://dx.doi.org/10.17721/1728-2713.89.13.

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The article considers the stages of mineralization of the Agyurt gold-copper-molybdenum deposit of the Lesser Caucasus. The following mineralization stages were established at the field: 1) quartz-molybdenum; 2) quartz-pyrite-chalcopyrite with gold; 3) quartz-carbonate-sphalerite; 4) quartz-carbonate. Gold ore bodies are mainly composed of aggregates of the second stage of mineralization, which is productive. Its mineral substance is represented by three paragenetic associations: 1) quartz-pyrite; 2) calcite-chalcopyrite-marcasite; 3) gold-telluride-bismuth. Chemical analyzes of pyrites, bismuthin, tellurium bismuthite are given. It has been found that native gold is found in the form of small, simple forms of gold in grains of early pyrite. In veins of chalcopyrite and grains of pyrite, it is usually confined to the marginal parts. The largest amount of gold is in close intergrowth with tellurium-bismuth minerals. It was found that the ore deposition environment (mineral composition, chemistry and structural and texture features of the host rocks) played a decisive role for various types of mineralization. It is established that, in the plan, the Agyurt deposit is localized in the contour of a rock block elongated in the northwest (submeridional) direction, bounded by tectonic zones from the north-north-west and north-east, which also bear a certain imprint of the formation of the structural plan of the ore field with near latitudinal strike of tectonic elements. These structures are most tectonically prepared for the localization of gold-copper-molybdenum mineralization (updated in the pre-ore stages and most permeable for hydrothermal structures), and were the main ore-supplying and ore-locating structural elements. The ore zones represented by hydrothermal-metasomatic formations, as well as quartz veins piercing them and numerous veinlets and sometimes mineralized dykes, are controlled by the Main Ordubad longitudinal (280°∠70–80°NE) and Agyurt-Misdag transverse (40–50°∠70° NE) with discontinuous violations and adjoin the hanging side (northeast flank) of the first. The combination of structural and petrogenetic factors not only predetermined the formation of deposits of the Agyurt type, but also determined the horizontal and vertical zonation of mineralization: an increase in the Mo content and a decrease in Cu with depth are established. The same pattern is observed in the horizontal direction: as you move away from the intrusive massif and the ore-removing channel, there is a transition from Cu-Mo-mineralization to copper and then polymetallic, i.e. the role of Cu increases, then Pb and Zn. The horizontal zoning in Agyurt is expressed in an increase in Au content and the total amount of sulfides with distance from the Main Ordubad Fault, and vertical shows an increase in Au content and decreases in Ag with depth.

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Fornadel, Andrew P., Paul G. Spry, and Simon E. Jackson. "Geological controls on the stable tellurium isotope variation in tellurides and native tellurium from epithermal and orogenic gold deposits: Application to the Emperor gold-telluride deposit, Fiji." Ore Geology Reviews 113 (October 2019): 103076. http://dx.doi.org/10.1016/j.oregeorev.2019.103076.

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Banerjee, Pushan, and B. Ghosh. "A Contacting Technology to Magnetic Semiconductors." Advances in Science and Technology 52 (October 2006): 31–35. http://dx.doi.org/10.4028/www.scientific.net/ast.52.31.

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The present paper describes the contacting technology to the diluted magnetic semiconductor Cd1-xMnxTe having potential applications in optoelectronic and spintronic devices. For efficient spin injection into a spintronic material, a matching ohmic contact is the demand of the time. Since cadmium telluride has a well-known contact problem, its manganese-doped counterpart is also facing a similar difficulty. In the present case Cd1-xMnxTe was fabricated using thermally assisted interdiffusion and compound formation between repeated stacked elemental layers of manganese, cadmium and tellurium. A wet electroless deposition technique was employed to deposit manganese doped nickel phosphide as a magnetic contact onto Cd1-xMnxTe. It appeared that the contact resistivity improved compared to the case of gold contact. The details of the contacting technology and the results have been described in the text of the paper.

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MURAO, SATOSHI, VICTOR B. MAGLAMBAYAN, and SOEY H. SIE. "MICRO-PIXE APPLICATION TO THE SPHALERITE-GALENA GEOTHERMOMETER." International Journal of PIXE 07, no. 03n04 (January 1997): 257–64. http://dx.doi.org/10.1142/s0129083597000291.

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We have applied the micro-PIXE technique to determining the cadmium content in sphalerite ( ZnS ) and galena ( PbS ) for use in geothermometry in the Bulawan gold-silver telluride deposit, Philippines. This geothermometry is based on the temperature control on the cadmium distribution between sphalerite and galena. For the analyses by the micro-PIXE, a beam of 3MeV protons was used at CSIRO, Sydney. The size of the beam was between 10-30μm such that during analysis, points within sphalerite-galena pairs which are located very close to the rims of the grains were analyzed and also pairs which are located farther away from each other. The X-rays obtained were deconvoluted for peak areas and converted to concentration using the Geo-PIXE software. The results for rim and non-rim pairs are indistinguishable. The micro-PIXE was capable of analyzing Cd to the level of about 100ppm in galena and 150ppm in sphalerite. Six pairs of galena-sphalerite at the earliest stage of mineralization were examined and only three pairs could be used for our purpose. The obtained temperatures, 402 to 527°C are about 90 to 210°C higher than estimates for the later stage of mineralization in the deposit. Thus, using micro-PIXE we concluded that deposition of early sphalerite and galena in the Bulawan deposit probably occurred at around 500°C before waning down to around 300°C.

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Zhang, Xiaomao, and Paul G. Spry. "Petrological, mineralogical, fluid inclusion, and stable isotope studies of the Gies gold-silver telluride deposit, Judith Mountains, Montana." Economic Geology 89, no. 3 (May 1, 1994): 602–27. http://dx.doi.org/10.2113/gsecongeo.89.3.602.

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37

Redin, Yu O., and V. M. Kozlova. "Gold-bismuth-telluride mineralization in ores from the Serebryanoe deposit of the Lugokan ore cluster of Eastern Transbaikalia." Russian Journal of Pacific Geology 8, no. 3 (May 2014): 187–99. http://dx.doi.org/10.1134/s1819714014030087.

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38

Zhai, Degao, Jiajun Liu, Edward M. Ripley, and Jianping Wang. "Geochronological and He–Ar–S isotopic constraints on the origin of the Sandaowanzi gold-telluride deposit, northeastern China." Lithos 212-215 (January 2015): 338–52. http://dx.doi.org/10.1016/j.lithos.2014.11.017.

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Liu, Junlai, Xiangdong Bai, Shengjin Zhao, MyDung Tran, Zhaochong Zhang, Zhidan Zhao, Haibin Zhao, and Jun Lu. "Geology of the Sandaowanzi telluride gold deposit of the northern Great Xing’an Range, NE China: Geochronology and tectonic controls." Journal of Asian Earth Sciences 41, no. 2 (May 2011): 107–18. http://dx.doi.org/10.1016/j.jseaes.2010.12.011.

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40

Wang, Peng, Wei Jian, Jing‐Wen Mao, Hui‐Shou Ye, Wei‐Wei Chao, Yong‐Fei Tian, and Jian‐Ming Yan. "Geochronology and fluid source constraints of the Songligou gold‐telluride deposit, western Henan Province, China: Analysis of genetic implications." Resource Geology 70, no. 2 (December 25, 2019): 169–87. http://dx.doi.org/10.1111/rge.12228.

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41

Chang, Ming, Jiajun Liu, Emmanuel John M. Carranza, Chao Yin, Degao Zhai, Tong Wu, and Dazhao Wang. "Gold-telluride-sulfide association in the Jinqu Au deposit, Xiaoqinling region, central China: Implications for ore-forming conditions and processes." Ore Geology Reviews 125 (October 2020): 103687. http://dx.doi.org/10.1016/j.oregeorev.2020.103687.

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42

Li, Chang-Ping, Jun-Feng Shen, Sheng-Rong Li, Yuan Liu, and Fu-Xing Liu. "In–Situ LA-ICP-MS Trace Elements Analysis of Pyrite and the Physicochemical Conditions of Telluride Formation at the Baiyun Gold Deposit, North East China: Implications for Gold Distribution and Deposition." Minerals 9, no. 2 (February 22, 2019): 129. http://dx.doi.org/10.3390/min9020129.

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The Baiyun gold deposit is located in the northeastern North China Craton (NCC) where major ore types include Si-K altered rock and auriferous quartz veins. Sulfide minerals are dominated by pyrite, with minor amounts of chalcopyrite, sphalerite and galena. Combined petrological observations, backscattered electron image (BSE) and laser ablation analysis (LA-ICP-MS) have been conducted on pyrite to reveal its textural and compositional evolution. Three generations of pyrite can be identified—Py1, Py2 and Py3 from early to late. The coarse-grained, porous and euhedral to subhedral Py1 (mostly 200–500 μm) from the K-feldspar altered zone is the earliest. Compositionally, they are enriched in As (up to 11541 ppm) but depleted in Au (generally less than 10 ppm). The signal intensity of Au is higher than background values by two orders of magnitude and shows smooth spectra, indicating that invisible gold exists as homogeneously or nanoscale-inclusions in Py1. Anhedral to subhedral Py2 grains (generally ranging 500–1500 μm) coexist with other sulfides such as chalcopyrite, sphalerite and galena in the early silicification stage (gray quartz). They have many visible gold grains and contain little amounts of invisible Au. Notably, visible gold has an affinity with micro-fractures formed due to late deformation, implying that native gold may have resulted from mobilization of preexisting invisible gold in the structure of Py2 grains. Subsequently Py3 occurs as very fine-grained disseminations of euhedral crystals (0.05–1 mm) in late silicification stage (milky quartz) and coexists with tellurides (e.g. petzite, calaverite and hessite). They contain the highest level of invisible gold with positive correlations between Au-Ag-Te. In the depth profiles of Py3, the smooth Au spectra mirror those of Te with high intensities, revealing that gold occurred as homogeneously/nanoscale-inclusions and submicroscopic Au-bearing telluride inclusions in pyrite grains. The high Te and low As in Py3, combined with high Au content, imply that invisible gold can be efficiently scavenged by Te. Abundant tellurides (petzite, calaverite and hessite) have been recognized in auriferous quartz veins. Lack of symbiosis sulfides with the tellurium assemblages indicates crystallization under low fS2 and/or high fTe2 conditions and coincides with the result of thermodynamic calculations. High and markedly variable Co (from 0.24 to 2763 ppm, average 151.9 ppm) and Ni (from 1.16 to 4102 ppm, average 333.1 ppm) values suggest that ore-forming fluid may originate from a magmatically-derived hydrothermal system. Combined with previous geochronological data, the textural and compositional evolution of pyrite indicates that the Baiyun gold deposit has experienced a prolonged history of mineralization. In the late Triassic (220,230 Ma), the magmatic hydrothermal fluids, which had affinity with the post-collisional extensional tectonics on the NCC northern margin, caused initial gold enrichment. Then, as a result of deformation or the addition of new hydrothermal fluids, visible gold-rich Py2 was formed. The upwelling of mantle–derived magma brought in a lot of Te-rich ore-forming hydrothermal fluids during the peak of the destruction of the NCC (~120 Ma). Amount of visible/invisible gold and Au-Ag-Te mineral assemblages precipitated from these mineralized fluids when the physical and chemical conditions changed.

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43

Chao, Weiwei, Ken‐ichiro Hayashi, Huishou Ye, Jingwen Mao, Yanguang Geng, Minfeng Bi, Peng Wang, and Qiuming Pei. "Geology, Mineralogy, Geochronology, and Sulfur Isotope Constraints on the Genesis of the Luanling Gold Telluride Deposit, Western Henan Province, Central China." Resource Geology 69, no. 4 (May 13, 2019): 333–50. http://dx.doi.org/10.1111/rge.12204.

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44

Zhai, Degao, and Jiajun Liu. "Gold-telluride-sulfide association in the Sandaowanzi epithermal Au-Ag-Te deposit, NE China: implications for phase equilibrium and physicochemical conditions." Mineralogy and Petrology 108, no. 6 (June 18, 2014): 853–71. http://dx.doi.org/10.1007/s00710-014-0334-6.

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45

Bao, Tan, Pei Ni, Bao-Zhang Dai, Guo-Guang Wang, Hui Chen, Su-Ning Li, Zhe Chi, Wen-Sheng Li, Jun-Ying Ding, and Li-Li Chen. "Pyrite Rb-Sr geochronology, LA-ICP-MS trace element and telluride mineralogy constraints on the genesis of the Shuangqishan gold deposit, Fujian, China." Ore Geology Reviews 138 (November 2021): 104158. http://dx.doi.org/10.1016/j.oregeorev.2021.104158.

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46

Forsythe, D. L. "Comment on “Telluride mineralogy of the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji” (2003) by D. W. Pals and P. G. Spry." Mineralogy and Petrology 90, no. 1-2 (October 24, 2006): 151–53. http://dx.doi.org/10.1007/s00710-006-0169-x.

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47

Stergiou, Christos L., Vasilios Melfos, Panagiotis Voudouris, Lambrini Papadopoulou, Paul G. Spry, Irena Peytcheva, Dimitrina Dimitrova, Elitsa Stefanova, and Katerina Giouri. "Rare and Critical Metals in Pyrite, Chalcopyrite, Magnetite, and Titanite from the Vathi Porphyry Cu-Au±Mo Deposit, Northern Greece." Minerals 11, no. 6 (June 14, 2021): 630. http://dx.doi.org/10.3390/min11060630.

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The Vathi porphyry Cu-Au±Mo deposit is located in the Kilkis ore district, northern Greece. Hydrothermally altered and mineralized samples of latite and quartz monzonite are enriched with numerous rare and critical metals. The present study focuses on the bulk geochemistry and the mineral chemistry of pyrite, chalcopyrite, magnetite, and titanite. Pyrite and chalcopyrite are the most abundant ore minerals at Vathi and are related to potassic, propylitic, and sericitic hydrothermal alterations (A- and D-veins), as well as to the late-stage epithermal overprint (E-veins). Magnetite and titanite are found mainly in M-type veins and as disseminations in the potassic-calcic alteration of quartz monzonite. Disseminated magnetite is also present in the potassic alteration in latite, which is overprinted by sericitic alteration. Scanning electron microscopy and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses of pyrite and chalcopyrite reveal the presence of pyrrhotite, galena, and Bi-telluride inclusions in pyrite and enrichments of Ag, Co, Sb, Se, and Ti. Chalcopyrite hosts bornite, sphalerite, galena, and Bi-sulfosalt inclusions and is enriched with Ag, In, and Ti. Inclusions of wittichenite, tetradymite, and cuprobismutite reflect enrichments of Te and Bi in the mineralizing fluids. Native gold is related to A- and D-type veins and is found as nano-inclusions in pyrite. Titanite inclusions characterize magnetite, whereas titanite is a major host of Ce, Gd, La, Nd, Sm, Th, and W.

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48

Bortnikov, N. S., A. V. Volkov, N. E. Savva, V. Yu Prokofiev, E. E. Kolova, A. A. Dolomanova-Topol’, A. L. Galyamov, and K. Yu Murashov. "Epithermal Au–Ag–Se–Te Deposits of the Chukchi Peninsula (Arctic Zone of Russia): Metallogeny, Mineral Assemblages, and Fluid Regime." Russian Geology and Geophysics 63, no. 4 (April 1, 2022): 435–57. http://dx.doi.org/10.2113/rgg20214425.

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Abstract Numerous epithermal Au–Ag deposits and ore occurrences of the Chukchi Peninsula are localized in the Cretaceous Okhotsk–Chukotka (OCVB) continent-marginal and Late Jurassic–Early Cretaceous Oloi (OVB) island arc volcanic belts and in Early Cretaceous postcollisional volcanic troughs. Volcanotectonic depressions, calderas, and volcanic domes control the location of the deposits. The orebodies of the deposits are quartz–adularia veins, sometimes en-echelon ones forming extending vein zones, as well as isometric and linear stockworks. The auriferous veins of most deposits display complex breccia–crustification structures. The vein ores have rhythmically and colloform–banded structures, with a predominantly fine distribution of ore mineral grains, often with banded clusters of ore minerals (ginguro). Native gold is of low fineness; the dispersion of this index varies from low to high. Acanthite is widespread in the ores. Its highest contents are specific to deposits with the repeated redistribution of substance (Kupol, Corrida, and Valunistoe). Based on the results of mineralogical studies, most of the epithermal Au–Ag deposits of the Chukchi Peninsula can be assigned to the Se type. The ores of some deposits (Valunistoe, Dvoinoe, etc.) contain both Se and Te minerals. The telluride-richest sites of the Sentyabr’skoe and Televeem deposits are far from the main orebodies. Most of the Chukchi epithermal Au–Ag deposits have many common characteristics (low and moderate temperatures of fluids, low fluid salinity, domination of carbon dioxide over methane, etc.) typical of low-sulfidation deposits. The maximum temperatures and salinity are specific to fluids in the Central Chukchi sector of the OCVB and in the Baimka zone of the OVB, and the minimum ones are typical of fluids in the East Chukchi flank zone and inner zone of the OCVB. The average salinity of mineral-forming fluids in the inner zone of the OCVB is half as high as the salinity of fluids in the East Chukchi flank zone of this belt, although the sulfate content is higher. At the same time, the fluids in the inner zone of the OCVB are richer in carbon dioxide and bicarbonate ion than the fluids in the East Chukchi flank zone of this belt. The fluid inclusion data permit the Vesennee deposit (Baimka zone) to be regarded as an intermediate-sulfidation one and suggest the presence of epithermal high-sulfidation deposits in the inner zone of the OCVB.

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49

Spry, Paul G., M. Milagros Paredes, Fess Foster, Jack S. Truckle, and Tom H. Chadwick. "Evidence for a genetic link between gold-silver telluride and porphyry molybdenum mineralization at the Golden Sunlight Deposit, Whitehall, Montana; fluid inclusion and stable isotope studies." Economic Geology 91, no. 3 (May 1, 1996): 507–26. http://dx.doi.org/10.2113/gsecongeo.91.3.507.

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50

Mueller, Andreas G. "Structural setting of Fimiston- and Oroya-style pyrite-telluride-gold lodes, Paringa South mine, Golden Mile, Kalgoorlie: 1. Shear zone systems, porphyry dykes and deposit-scale alteration zones." Mineralium Deposita 55, no. 4 (July 20, 2017): 665–95. http://dx.doi.org/10.1007/s00126-017-0747-3.

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