Jarosite Occurences in altered snadstone and Microconglomerates of Aliabad area, Taft, West of Yazd
Leucogranites which are known related to Shirkuh batholith is affected the surrounding Lower Cretaceous terrigenous rocks by hydrothermal alteration and weak metamorphism.
The following mineral assemblages are formed garnet, quartz, alunite, jarosite, turquise, pyrite and hydrated cu-carbonates.
Sericitization are the main alteration in leucogranites. Jarosit is occurred as disseminated grains in altered rocks, replacement and veinlets. Oxidation of pyrites in gossan environment is caused the production of acidic fluids. These fluids are able to release the K+ from the alkali feldspars in arkosic sandstones, which is necessary for the formation of jarosite.