State-of-the-art and prospects of mineral and raw materials supply base expansion at UGC Gold Mining Company in the South Ural

Berger, R. V.; Fedoseev, V. V.; Saraskin, A. V.

doi:10.17580/gzh.2017.09.01

Cited by 2 publications

(3 citation statements)

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“…The δ 18 O values of Q3 range from +12.8 to +14.1% . Our previous data revealed the 16 O-rich (+7.2 ± 0.3% ) values for the late quartz [20]. The calculated δ 18 O values of the ore-forming fluid in equilibrium with quartz at 270-385 • C (according to T h data) fall into two intervals: between +5.2 and +8.5% ; between +16 and +19% ( Figure 10).…”

Section: Oxygen Isotopesmentioning

confidence: 79%

“…However, the oxygen isotope exchange between the fluid and the host rock could also cause 18 O-enrichment of the magmatic fluid derived from the hidden granitic pluton. The deposition of quartz from 16 O-rich fluid can be a result of the 18 O depleted heated meteoric water input. The δ 34 S H2S values (+1.5 to +8.7% [20]) are typical of sulphur exsolved from the granite magma.…”

Section: Sources Of Hydrothermal Fluidsmentioning

confidence: 99%

“…The annual gold production is 4-4.5 tons of Au. The remaining reserves of gold to the depth of 800 m are estimated at 80 tons [15,16], and its total reserves, taking into account the output for 25 years (since 1992), is about 135 tons of Au. A specific feature of the Svetlinsk deposit is the abundance of various tellurides, namely tellurides of Fe, Ni, Pb, Sb, Bi, Ag, and Au.…”

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confidence: 99%

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Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals

et al. 2019

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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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Section: Oxygen Isotopesmentioning

confidence: 79%

Section: Sources Of Hydrothermal Fluidsmentioning

confidence: 99%

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confidence: 99%

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Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals

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Geological and structural position of the Svetlinsky gold deposit (Southern Urals)

Kissin

Pritchin

Ozornin

2022

PMI

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The paper presents the geological and structural position of the large Svetlinsky gold deposit in the Kochkar anticline (Southern Urals), localized in the zone of the Late Paleozoic (D3) deep thrust of the western dip. The study confirms and clarifies the notion of its multiphase and polychronism. The thrust caused bending moments in its wings, subsidence of the lying crust, emergence of a shallow marine basin with rapid accumulation of terrigenous carbonate sediments (C1v), and formation of numerous landslide structures. The heating of rocks in the anticline core was accompanied by granitization and dome formation. A small Svetlinsky dome formed in the immediate vicinity of the thrust, creating a thermobaric gradient field (С2). The zone of dome dynamic influence also includes the adjoining thrust area, complicated by a series of sub-vertical thrusts of sub meridional strike and numerous steeply dipping subparallel cracks of the latitudinal strike, synchronously filled with vein quartz and accompanied by hydrothermal metasomatic rock transformations. The formation of the gold deposit occurred during the post-collisional relaxation stage (from P1 to, probably, the Early Jurassic). The association of gold mineralization with the Svetlinsky dome is indicated by the presence of native gold in Neogene ravine placers in the dome area and marbles of the Svetlinsky deposit, in association with fluorite, F-phlogopite, Cr-muscovite, pink topaz, pure quartz, and native sulphur. The presence of native gold in Neogene ravine placers in the dome area and marbles of the Svetlinsky deposit, in association with fluorite, F-phlogopite, Cr-muscovite, pink topaz, pure quartz, and native sulphur, indicates the association of gold mineralization with the Svetlinsky dome.

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State-of-the-art and prospects of mineral and raw materials supply base expansion at UGC Gold Mining Company in the South Ural

Cited by 2 publications

References 0 publications

Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals

Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals

Geological and structural position of the Svetlinsky gold deposit (Southern Urals)

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