Siderite Lavina B, Dera P, Downs R T, Yang W, Sinogeikin S, Meng Y, Shen G, Schiferl D Physical Review B82 (2010) 064110-8 Structure of siderite FeCO3 to 56 GPa and hysteresis of its spin-pairing transition Locality: Invigtut, Greenland Note: run P14, P = 41.2 GPa _database_code_amcsd 0017576 4.514 4.514 13.34 90 90 120 R-3c atom x y z Uiso Fe 0 0 0 .0088 C 0 0 .25 .005 O .278 0 .25 .010