Alunite - an overview | ScienceDirect Topics
Alunite in these deposits has δ 34 S = + 24 to + 34‰, resembling the findings for Summitville, and together with the sulfide data, indicates an aqueous sulfide/sulfate ratio of ~ 3. A substantial number of analyses of O and H isotopes in residual silica, alunite, and clays (mostly kaolinite, pyrophyllite, and Al-chlorite) at Kasuga and Iwato ...