Hidrológiai Közlöny 1933 (13. évfolyam)

Gedeon Tihamér: Szulfátos vizek képződése

Formation of sulfate containing waters. By Tihamér Gedeon. Szulfátos vizek képződése. A dolgozat magyar kivonatban a Bányászati és Kohászati Lapok LXVL évf. 7. számában a 156 oldalon (1933. április 4.) „Timsósvíz képződése" cím alatt jelent meg. Sulfate containing mineral waters are named on base of their chief components of metal salts. Thus waters containing Glauber salt, bitter salt and alum salts are known according to the content on NazSOi, MgSOi or Al

2(S0

4)s as chief components. The way of their formation is always the same. Sulfuric acid is formed of the sulfide minerals lying nearest to the surface under the oxydating influence of the oxygen contained by the infiltrating precipitate water. This acid in statu nascendi decomposes the lime hydrocarbonate dissolved in the water and forms gypsum. E. g. 2FeS2+2H

20 +70-2 + Ca(HC0

3>2-* 2FeS0j + CaSC>4.2H >0 + H

2SC>4 + 2C0a The excess sulfuric acid remaining after the formation of gypsum has then a dissolving influence against the minerals of the original mother rock. Gypsum as a relatively insoluble matter can be found crystallised within the oxydation zone of the mother rock of any sulfate containing water. Other sulfates being more soluble, become easily washed off by the soil water currents and can get concentrated to mineral waters under favourable geological conditions only.

1 The possibilities of the formation of sulfate containing waters can be found partly in rocks of eruptive territories impregnated under postvulcanic influences with sulfidic ores,

2 partly in pyrite containing — bluishgray — sedimentary layers.

3 1 Vendl A.: Hidrológiai Közi., XIiI. 5. 1932. ! Pavp K.: Földr. Közlem., XXXHI. 46. 1905. 3 Hojnos R.: Hidrológiai Közi., III. 42. 1923.