Metallogeny of the Central Slovakian Volcanic Field

Abstract The essential structural aspects and paleovolcanic reconstruction of the Central Slovakia Volcanic Field has been discussed by Konecný et al., (1995); their paper is reprinted in this volume. Volcanic rocks, especially central volcanic zones including subvolcanic intrusive complexes, host a number of mineral deposits and occurrences. Fourteen types of mineralization have been distinguished in this region (Fig. 1), including:Magnetite skarn deposits and occurences related to contacts of the granodiorite subvolcanic intrusion with Triassic limestones and dolomites.Porphyry/skarn copper ± molybdenum or gold deposits and occurrences related to granodiorite porphyry stocks and dike clusters emplaced in Triassic carbonate rocks.Porphyry copper ± molybdenum mineralogical occurrences related to diorite to monzodiorite stocks.Base metal stockwork/disseminated mineralization related to granodiorite and diorite porphyry intrusions.Barren high-sulfidation alteration systems related variably to granodiorite, diorite, monzodiorite, and granodiorite porphyry intrusions (stocks), possibly representing the tops of porphyry-type hydrothermal systems.A high-sulfidation epithermal gold deposit and occurrences related to diorite/monzodiorite stocks, showing rudimentary porphyry type mineralization at depth.A low-sulfidation epithermal gold deposit related to granodiorite subvolcanic intrusion, along with base metal stockwork/disseminated mineralization.Low-sulfidation epithermal veins situated in central zones of older stratovolcanoes; however, these are directly related to local horst uplifts and late-stage rhyolitic extrusive domes and dikes. On the basis of metal contents there are base metal, silver — base metal and precious metal epithermal veins. Where these veins coexist there is a zonation in metals.Base-metal replacement deposit and occurrences adjacent to base-metal epithermal veins in Triassic carbonate rocks.Precious-metal replacement