The funds will also survey technologies for reducing sulfate water
contamination across Minnesota and minimizinng environmental impacts.
1992), schwertmannite is the most common Fe mineral to precipitate directly from acid sulfate waters.
Bigham JM, Nordstrom DK (2000) Iron and aluminum hydroxy sulfates from acid sulfate waters.
Bigham JM, Schwertmann U, Traina SJ, Winland RL, Wolf M (1996) Schwertmannite and the chemical modelling of iron in acid sulfate waters.
1988) and Lopez (1992) who suggested the presence of three distinctive types of water (acid sulfate waters, bicarbonate and neutral chloride waters) and reported an apparent lack of mixing between the two water types.
Lopez (1992) noted that acid sulfate waters appear to be related to the north-west striking and seismically active Villamaria-Termales fault.
Acid sulfate waters are complex with several aluminium and iron hydroxy sulfate phases potentially present.
4] as a regulator of Al activity in acid sulfate waters was premature, we are unable to provide an explanation other than to repeat the words of others about the complex nature of the solution chemistry and kinetic restraints on reaching equilibria in acid sulfate environments (Prietzel and Hirsch 1998; Bigham and Nordstrom 2000).
Bigham JM, Schwertmann U, Traina SJ, Winland RL and Wolf M: Schwertmannite and the chemical modeling of iron in acid sulfate waters