Aragonite Antao S M, Hassan I The Canadian Mineralogist 48 (2010) 1225-1236 Temperature dependence of the structural parameters in the transformation of aragonite to calcite, as determined from in situ synchrotron powder X-ray-diffraction data Locality: Cuenca, Spain Note: T = 318 C Note: P = 101 kPa _database_code_amcsd 0017840 4.9693 8.0234 5.8037 90 90 90 Pmcn atom x y z Uiso Ca .25 .4132 .7552 .017 C .25 .7628 -.0633 .036 O1 .25 .9198 -.0852 .036 O2 .4719 .6860 -.0978 .036