Dellaite Ganiev R M, Ilyukhin V V, Belov N V Doklady Akademii Nauk SSSR 190 (1970) 831-834 Crystal structure of cement phase Y=Ca6[Si2O7][SiO4](OH)2 Locality: synthetic _database_code_amcsd 0012449 6.85 6.95 12.9 90.75 97.33 98.25 P-1 atom x y z Biso Ca1 .082 .194 .103 .17 Ca2 .192 .206 .489 .17 Ca3 .315 .191 .876 .17 Ca4 .560 .034 .321 .17 Ca5 .894 .468 .291 .17 Ca6 .595 .477 .703 .17 Si1 .618 .291 .098 .17 Si2 .809 .285 .885 .17 Si3 .715 .299 .509 .17 O1 .614 .490 .166 .17 O2 .394 .188 .053 .17 O3 .615 .184 .806 .17 O4 .747 .153 .174 .17 O5 .988 .149 .910 .17 OH6 .229 .165 .300 .17 O7 .850 .130 .486 .17 OH8 .192 .210 .685 .17 O9 .530 .215 .565 .17 O10 .743 .336 .999 .17 O11 .643 .368 .393 .17 O12 .836 .482 .581 .17 O13 .112 .510 .170 .17