Secondary Sulfate Minerals from Thallium Mineralized Areas: Their Formation and Environmental Significance

Thallium is a highly toxic metal and predominantly hosted by sulfides associated with low-temperature hydrothermal mineralization. Weathering oxidation of generate acid drainage high concentration thallium, posing threat to surrounding environments. may also be incorporated into secondary sulfate minerals, which act as temporary storage for thallium. We present state-of-the-art review on the formation mechanism minerals from thallium mineralized areas varied roles these play in Tl mobility. Up 89 independent four unnamed have been documented. These are dominated sulfosalts limited several sites. Occurrence, crystal chemistry, content indicate that occurs Tl(I) K-bearing sulfate. Lanmuchangite acts transient source sink its water-soluble feature, whereas dorallcharite, Tl-voltaite, Tl-jarosite long term surface Acid and/or ferric iron derived dissolution increase pyrite process release Tl-bearing term.