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Chemistry of water from the inflows to the “Franciszek” dipheading in the “Pomorzany” Zn-Pb mine in the Olkusz Area (SW Poland)

Motyka J., d’Obyrn K., Juśko K., Wójcik T.

Journal of Sustainable Mining

2017

Vol. 16, iss. 4

139--150

The “Franciszek” dipheading is one of the main components of the transportation infrastructure in the “Pomorzany” zinc and lead mine in the Olkusz ore district. The heading was cut out of the aeration zone, created by mine drainage in Quaternary sands and Middle and Lower Triassic carbonates. This study presents the results of the examination of the chemical composition of water leaks identified in the dipheading. It was found that the chemical composition of the water under examination depends on geogenic factors, mainly the mineralogical composition of the rocks that are infiltrated by the meteoric waters which feed the leaks, as well as the geochemical processes associated with metal sulphate weathering in the carbonate rock environment (with dolomites and limestones). The significant influence of anthropogenic factors was also identified, including the most important one linked to the migration of polluted waters from the surface mine facilities.