Recent (1930s) natural acidification and fish-kill in a lake that was an important food source for an Inuit community in northern Québec, Canada

Chemical characteristics of groundwater around two massive sulphide deposits in an area of previous mining contamination, Iberian Pyrite Belt, Spain

“…Consequently, metal and pH anomalies have been proposed as tools for mineral exploration (de Geoffrey etal., 1967;Archer and Main, 1971;Shartsev et al, 1975;Cameron, 1977Cameron, , 1978Simpson et al, 1996;Taufen, 1997). From the environmental standpoint, however, high metal contents and low pH are toxic to flora and fauna and, under certain circumstances, this natural baseline water quality can even threaten aquatic ecosystems downstream from the ore deposit (Cameron et al, 1998).…”

Seasonal variations in the composition of mine drainage-contaminated groundwater in Dalarna, Sweden

“…The most important factors driving the natural pH decline are the increase in concentration of natural organic acids in combination with dilution of the acid neutralization capacity (Laudon et al, 2000(Laudon et al, , 2001. In addition, acidity pulses can be attributed to the oxidation of sedimentary pyrite (Brown et al, 1983;Cameron et al, 1998) in the catchment area. For this study, the discharge of acidic groundwater from Ruldolfsgruvan (i.e.…”