Geoheritage of the Precious Opal Bearing Zone in Libanka Mining District (Slovakia) and Its Geotourism and Geoeducation Potential

The northern part of the Slanské Vrchy Mountains, in Slovakia, within territory Dubnik Opal Mines, is considered to be historical source opal, including opal known Romans. precious mineralization originating from post-magmatic hydrothermal fluids based on its values should recognized as an area global importance. Geological processes that are connected Neogene volcanic activity took place Mines and resulted formation various geological products represented by polymetallic mineral formation, antimonite supergene stage, well stratovolcano rock environment, which geoheritage significance. Remnants intensive mining during past 2000 years provide opportunities for visitors explore, study, appreciate this unique heritage international However, geo-interpretation aimed at general public (the largest group potential sustainable geotourism development) research (geo)tourism and/or tourism purposes, discussed paper, lacking.