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The Taezhny Epithermal Vein Silver Ore Deposit (Sikhote Alin): Regional Position, Formation Conditions, Geochemistry, and Mineral Composition.

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Title: The Taezhny Epithermal Vein Silver Ore Deposit (Sikhote Alin): Regional Position, Formation Conditions, Geochemistry, and Mineral Composition.
Authors: Ratkin, V. V.1 (AUTHOR) ratkin@yandex.ru, Simanenko, L. F.1 (AUTHOR), Pakhomova, V. A.1 (AUTHOR), Eliseeva, O. A.1 (AUTHOR)
Source: Russian Journal of Pacific Geology. Mar2021, Vol. 15 Issue 2, p102-118. 17p.
Subject Terms: *Ore deposits, *Geochemistry, *Minerals, *Veins, *Orogenic belts, *Gold ores, *Silver
Geographic Terms: Vladivostok (Russia)
Abstract: The Taezhny is a silver with gold (Au : Ag = 1 : 100) vein deposit with a pronounced mineralogical and geochemical selenium ore specialization. The deposit is located in the eastern part of the Sikhote Alin Orogenic Belt, 700 km north of Vladivostok. Similarly to the Mexican Guanajuato deposits typical of the Pacific region, the position of the described ore-bearig area in the region is governed by its relation to an Early Cretaceous island-arc terrane with a distinct geochemical silver enrichment of its folded rock complex. Quartz vein bodies are hosted in the submeridional faults feathering the NE-trending sinistral strike-slip faults. The vein-related alterations are manifested in aureoles of sericitization and silicification of host sandstones. The main silver minerals are freibergite, acanthite, Se-containing pyrargyrite, polybasite, and stephanite. Of the rarer minerals, custelite, electrum, aguilarite, allargentum, and dyscrasite are found. The mineralogical and geochemical zoning of the ore bodies has been revealed, which is emphasized by a highly productive Ag-sulfosalt Se-enriched assemblage in the upper part of the veins and poor ores with predominant acanthite at depth. The veins were formed with the involvement of sodium chloride solutions saturated with CO2 and CH4, in the temperature range from 400 to 150°C. The productive sulfosalt-bearing assemblages were deposited at a sharp pressure decrease due to magmatic-meteoric fluid discharge in zones of solution circulation under the screen of volcanic rocks overlying the Kema Terrane. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Label: Title
  Group: Ti
  Data: The Taezhny Epithermal Vein Silver Ore Deposit (Sikhote Alin): Regional Position, Formation Conditions, Geochemistry, and Mineral Composition.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ratkin%2C+V%2E+V%2E%22">Ratkin, V. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ratkin@yandex.ru</i><br /><searchLink fieldCode="AR" term="%22Simanenko%2C+L%2E+F%2E%22">Simanenko, L. F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pakhomova%2C+V%2E+A%2E%22">Pakhomova, V. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eliseeva%2C+O%2E+A%2E%22">Eliseeva, O. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Russian+Journal+of+Pacific+Geology%22">Russian Journal of Pacific Geology</searchLink>. Mar2021, Vol. 15 Issue 2, p102-118. 17p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Ore+deposits%22">Ore deposits</searchLink><br />*<searchLink fieldCode="DE" term="%22Geochemistry%22">Geochemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink><br />*<searchLink fieldCode="DE" term="%22Veins%22">Veins</searchLink><br />*<searchLink fieldCode="DE" term="%22Orogenic+belts%22">Orogenic belts</searchLink><br />*<searchLink fieldCode="DE" term="%22Gold+ores%22">Gold ores</searchLink><br />*<searchLink fieldCode="DE" term="%22Silver%22">Silver</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Vladivostok+%28Russia%29%22">Vladivostok (Russia)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Taezhny is a silver with gold (Au : Ag = 1 : 100) vein deposit with a pronounced mineralogical and geochemical selenium ore specialization. The deposit is located in the eastern part of the Sikhote Alin Orogenic Belt, 700 km north of Vladivostok. Similarly to the Mexican Guanajuato deposits typical of the Pacific region, the position of the described ore-bearig area in the region is governed by its relation to an Early Cretaceous island-arc terrane with a distinct geochemical silver enrichment of its folded rock complex. Quartz vein bodies are hosted in the submeridional faults feathering the NE-trending sinistral strike-slip faults. The vein-related alterations are manifested in aureoles of sericitization and silicification of host sandstones. The main silver minerals are freibergite, acanthite, Se-containing pyrargyrite, polybasite, and stephanite. Of the rarer minerals, custelite, electrum, aguilarite, allargentum, and dyscrasite are found. The mineralogical and geochemical zoning of the ore bodies has been revealed, which is emphasized by a highly productive Ag-sulfosalt Se-enriched assemblage in the upper part of the veins and poor ores with predominant acanthite at depth. The veins were formed with the involvement of sodium chloride solutions saturated with CO2 and CH4, in the temperature range from 400 to 150°C. The productive sulfosalt-bearing assemblages were deposited at a sharp pressure decrease due to magmatic-meteoric fluid discharge in zones of solution circulation under the screen of volcanic rocks overlying the Kema Terrane. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1134/S1819714021020056
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 102
    Subjects:
      – SubjectFull: Ore deposits
        Type: general
      – SubjectFull: Geochemistry
        Type: general
      – SubjectFull: Minerals
        Type: general
      – SubjectFull: Veins
        Type: general
      – SubjectFull: Orogenic belts
        Type: general
      – SubjectFull: Gold ores
        Type: general
      – SubjectFull: Silver
        Type: general
      – SubjectFull: Vladivostok (Russia)
        Type: general
    Titles:
      – TitleFull: The Taezhny Epithermal Vein Silver Ore Deposit (Sikhote Alin): Regional Position, Formation Conditions, Geochemistry, and Mineral Composition.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Ratkin, V. V.
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            NameFull: Simanenko, L. F.
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            NameFull: Pakhomova, V. A.
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            NameFull: Eliseeva, O. A.
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          Dates:
            – D: 01
              M: 03
              Text: Mar2021
              Type: published
              Y: 2021
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              Value: 15
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              Value: 2
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            – TitleFull: Russian Journal of Pacific Geology
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