AM_Dovyrenite Formula: Ca3 Zr.5 Si2 O9 H2 Name: Dovyrenite Unit cell: 5.666 18.844 3.728 90.0 90.0 90.0 , V=398.04 Space group: PNNM (58)

Kadiyski M , Armbruster T , Galuskin E V , Pertsev N N , Zadov A E , Galuskina I O , Wrzalik R , Dzierzanowski P , Kislov E V , American Mineralogist , 93 (2008) p.456-462, The modular structure of dovyrenite, Ca6Zr[Si2O7]2(OH)4: alternate stacking of, tobermorite and rosenbuschite-like units, Locality: skarndolomite xenoliths, Dovyren massif, Russia