AM_Frolovite Formula: Ca B2 (O8 H8) Name: Frolovite Unit cell: 7.8 5.7 7.95 108.5 101.5 108.5 , V=299.66 Space group: P-1 (2)

Egorov-Tismenko Y K , Gushchina A E , Shashkin D N , Simonov M A , Belov N V , Doklady Akademii Nauk SSSR , 202 (1972) p.78-80, The crystal structure of frolovite CaB2O4(H2O)4 = Ca(B(OH)4)2