Danburite Dunbar C, Machatschki F Zeitschrift fur Kristallographie 76 (1931) 133-145 The structure of danburite, CaB2Si2O8 _cod_database_code 1011048 _database_code_amcsd 0017950 8.75 8.01 7.72 90 90 90 Pbnm atom x y z Ca1 .438 -.125 .25 Si1 .188 .058 -.063 O1 .1 .2 0 O2 .375 .139 -.028 O3 .188 -.083 .083 O4 .188 0 -.25 O5 -.063 .25 -.25 B1 -.063 .188 -.125