Ophirite, Ca2Mg4[Zn2Mn3+2(H2O)2(Fe3+W9O34)2]·46H2O, a new mineral with a heteropolytungstate tri-lacunary Keggin anion

Ophirite, Ca2Mg4[Zn2Mn3+2(H2O)2(Fe3+W9O34)2]·46H2O, a new mineral with a heteropolytungstate tri-lacunary Keggin anion