The hematolite group includes: hematolite: (Mn,Mg,Al)15(AsO4)2(AsO3)(OH)23 kraisslite: Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10 synadelphite: Mn2+9(AsO4)2(AsO3)(OH)9.2H2O Back to Minerals