SrSi2O5 Kojitani H, Kido M, Akaogi M Physics and Chemistry of Minerals 32 (2005) 290-294 Rietveld analysis of a new high-pressure strontium silicate SrSi2O5 BaGe2O5 III-type structure _database_code_amcsd 0008965 5.2389 9.2803 13.4406 90 90 90 Cmca atom x y z Biso Sr 0 .3404 .0827 1.35 Si1 0 .6753 .1821 .81 Si2 0 .0058 .1377 .30 O1 0 .5148 .2480 1.53 O2 0 .8320 .1029 0 O3 .25 .2427 .25 .66 O4 .2517 .0896 .0965 .42