KHCO3 Allan D R, Marshall W G, Pulham C R American Mineralogist 92 (2007) 1018-1025 The high-pressure crystal structure of potassium hydrogen carbonate (KHCO3) Note: Kalicinite-type structure Sample: P = 0.74 GPa _database_code_amcsd 0004366 14.945 5.588 3.6691 90 103.538 90 P2_1/a atom x y z K .1673 .021 .300 D .0101 .694 .555 C .1218 .530 .870 O1 .1953 .543 .111 O2 .0743 .718 .722 O3 .0842 .323 .732