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.
|Number of pages||16|
|Journal||Transactions - Institution of Mining and Metallurgy, Section B|
|Publication status||Published - 1996|
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Geochemistry and Petrology
- Earth and Planetary Sciences (miscellaneous)