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 = 2.50 GPa _database_code_amcsd 0004370 14.419 5.5011 3.6093 90 101.731 90 P2_1/a atom x y z K .1617 .033 .298 D .0120 .699 .541 C .1183 .536 .878 O1 .1954 .554 .118 O2 .0719 .737 .746 O3 .0813 .327 .742