AM_Vistepite Formula: Sn Mn4 Si4 B2 H2 O18 Name: Vistepite Unit cell: 6.973 7.365 7.665 89.94 62.94 76.88 , V=339.02 Space group: P-1 (2)

Hybler J , Petricek V , Jurek K , Skala R , Cisarova I , The Canadian Mineralogist , 35 (1997) p.1283-1292, Structure determination of vistepite SnMn4B2Si4O16(OH)2: Isotypism with, bustamite, revised crystallographic data and composition