Oxide zone geochemistry

Abstract

Part 1 General reactions and processes: redox reactions in oxidising sulfides reactions of sulfur species and simple sulfides lower valence sulfur oxyanions in oxide zones redox behaviour of other elements weathering of silicate gangues groundwater geochemistry. Part 2 Secondary mineral formation in oxide zones: elements and oxides carbonate minerals sulfate minerals halides and halogen-containing species phosphates, arsenates and other oxyanionic minerals secondary silicates and silica.