Authors:János Földessy, Éva Seress-Hartai, and Géza Szebényi
The Lahóca and Recsk Deep ore complex was formed in relation with andesite volcanics and diorite porphyry intrusives of Paleogene age. The zone is long known for significant enrichment of Cu, Pb and Zn ores. The presence of gold was recorded in the early years of the Lahóca mine. Epithermal and mesothermal gold enrichments are both known in the ore complex. In the epithermal zone low and high sulfidation varieties were identified on the volcanic level of the complex. In the mesothermal zone, significant gold enrichment was indicated in the porphyry copper and skarn copper, zinc ore zones and Pb-Zn veins. In the high sulfidation and the mesothermal copper skarn ore types a moderate correlation between Au and Cu was recorded.
Authors:Norbert Németh, János Földessy, and Judit Turi
The mineralized complex of Rudabánya hosts deposits of several mineral resources including base metal ores. Recent exploration provided new information on the enrichment of copper within this complex. The primary copper mineralization consists of sulfides. The paragenetic sequence starts with fahlore, continues with bornite, and concludes in chalcopyrite formation partly replacing the former phases. It is hosted by brecciated carbonate rocks, overprinting the paragenesis of the iron metasomatism. It was found to be spatially separated from zinc and lead enrichments. Oxidation and a subsequent new pulse of mineralization formed several new copper, zinc, and lead minerals, probably by the remobilization of the primary parageneses.