Geochemical studies of W-Mo vein deposits in Susan area, Hwanggangri district, Korea: metal zoning related to progressive meteoric water mixing in a granitic hydrothermal system

Yun Seong-Taek Yun, So Chil-Sup So, Youm Seung-Jun Youm

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Abstract

Tungsten-molybdenum deposits in the Susan area of the Hwanggangri district, Korea, consist of greisen-bordered quartz veins that are spatially, temporally and genetically associated with a late Cretaceous I-type, potassic biotite granite that intrudes an early Palaeozoic limestone-rich formation. Paragenetic data indicate three stages of hydrothermal mineralization: greisen-molybdenite-wol framite-scheelite mineralization (stage I); base-metal sulphide mineralization (stage II); and fluorite-carbonate mineralization (stage III). Fluid inclusion and stable isotope data indicate that hydrothermal veins formed over a temperature range of 120-395°C from low-salinity fluids. The influx of meteoric water into the hydrothermal system increased with distance from the centre of the cooling pluton and resulted in a sequence of W-Mo, base-metal sulphides and fluorite-carbonate mineralization.

Original languageEnglish
Pages (from-to)101-116
Number of pages16
JournalTransactions - Institution of Mining and Metallurgy, Section B
Volume105
Issue numberMay-Aug
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)

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