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 = 359 C Note: P = 101 kPa _database_code_amcsd 0017842 4.9713 8.0311 5.8141 90 90 90 Pmcn atom x y z Uiso Ca .25 .4132 .7559 .018 C .25 .7618 -.0615 .037 O1 .25 .9197 -.0847 .037 O2 .4715 .6863 -.0976 .037