Help on Dana Classification : Dana Classif. : Dana Code:
Dana Class:40 - Hydrated Phosphates, etc
Dana Type:40.2 - Hydrated Phosphates, etc where A++ (B++)2 (XO4) • x(H2O)
Dana Group:40.2.11 - 
CodeMineralFormulaH-M SymbolSpace Group·2(H2O)2/m 2/m 2/mPcab
Help on Strunz Class: Strunz Classif. : Strunz Code:VII/C.18-20
Strunz Class:VII - Phosphates, Arsenates and Vanadates
Strunz Type:VII/C - VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg
Strunz Group:VII/C.18 - Wicksite - Alentaite series
CodeMineralFormulaH-M SymbolSpace Group
VII/C.18-10WicksiteNaCa2(Fe++,Mn++)4MgFe+++(PO4)6·2(H2O)2/m 2/m 2/mPbca
VII/C.18-15Bederite([ ],Na)Ca2(Mn++,Mg,Fe++)2(Fe+++,Mg++,Al)2Mn++2(PO4)6·2(H2O)2/m 2/m 2/mPcab
VII/C.18-20GrischuniteNaCa2Mn++5Fe+++(AsO4)6·2(H2O)2/m 2/m 2/mPcab
VII/C.18-30Walentaite(Ca,Mn++,Fe++)Fe+++3(AsO4)(PO4)3(PO3OH)Immm, Ibam, Ibca, Imma