Labuntsovite

Formula:
labuntsovite-Fe: Na4K4Fe2+2Ti8O4(Si4O12)4(OH)4.10-12H2O
labuntsovite-Mg: Na4K4Mg2Ti8O4(Si4O12)4(OH)4.10-12H2O
labuntsovite-Mn: Na4K4Mn2+2Ti8O4(Si4O12)4(OH)4.10-12H2O