1. Syntectonic polysulphide mineralisation in the Brabant Massif, Belgium.
- Author
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Piessens K., De Vos W., Muchez P., Viaene W., Piessens K., De Vos W., Muchez P., and Viaene W.
- Abstract
Sub-economic polysulphide mineralisation, mainly consisting of sphalerite, chalcopyrite, galena, pyrite, marcasite and stibnite, occurs within the Lower Palaeozoic Brabant Massif. Mineralogical, geochemical and structural data from more than 1 km of cores from five drill holes near Sint-Pieters-Kapelle have been integrated into a genetic model of mineralisation. The results indicate that the precipitation of minerals was contemporaneous with deformation, silicification and sericitisation of the host rock. Microthermometric and Raman spectroscopic analysis of fluid inclusions show that the mineralising fluid consisted of H2O, CO2, CH4 and NaCl. The fluid formed at a minimum temperature of 260 degrees C with a salinity less than 7 wt% NaCl equiv. Sub-economic mineralisation formed syntectonically and regional fault structures served as major fluid flow conduits., Sub-economic polysulphide mineralisation, mainly consisting of sphalerite, chalcopyrite, galena, pyrite, marcasite and stibnite, occurs within the Lower Palaeozoic Brabant Massif. Mineralogical, geochemical and structural data from more than 1 km of cores from five drill holes near Sint-Pieters-Kapelle have been integrated into a genetic model of mineralisation. The results indicate that the precipitation of minerals was contemporaneous with deformation, silicification and sericitisation of the host rock. Microthermometric and Raman spectroscopic analysis of fluid inclusions show that the mineralising fluid consisted of H2O, CO2, CH4 and NaCl. The fluid formed at a minimum temperature of 260 degrees C with a salinity less than 7 wt% NaCl equiv. Sub-economic mineralisation formed syntectonically and regional fault structures served as major fluid flow conduits. more...