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 = 337 C Note: P = 101 kPa _database_code_amcsd 0017841 4.9703 8.0272 5.8087 90 90 90 Pmcn atom x y z Uiso Ca .25 .4132 .7555 .018 C .25 .7622 -.0634 .038 O1 .25 .9194 -.0846 .038 O2 .4718 .6860 -.0975 .038