Mineralogy of polymetallic ore occurrences near Maršov and Javůrek villages (Svratka Dome, Moravicum)Article PDF
Mineralogy of polymetallic ore occurrences near Maršov and Javůrek villages (Svratka Dome, Moravicum)
The ore occurrences near the Maršov and Javůrek villages (central part of the Svratka Dome) are described. The veins contain galena, sphalerite (with about 0.2 wt. % Fe), chalcopyrite, tetrahedrite (with up to 8.22 wt. % Ag, up to 8.86 wt. % As), quartz, barite, fluorite and supergene minerals (“limonite-stilpnosiderite”, malachite, azurite, chrysocolla, cerusite, hemimorphite, pyromorphite, aurichalcite, covellite). Sulfur isotopes of sulfides show large dispersion (-1.2 to -9.1 o CDT) caused probably by Eh changes. Fluid inclusion data suggest that mineralization formed at temperature of up to 150°C (Th ranges between 109 and 150°C) from fluids with variable salinity (up to 22 wt. % NaCl equiv.).