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) Sample: P = 4.10 GPa _database_code_amcsd 0004373 6.2435 5.3363 4.2448 95.216 100.935 109.167 P-1 atom x y z K .301 .130 .290 D .088 .703 .539 C .2317 .5735 .9133 O1 .207 .774 .750 O2 .1102 .3314 .773 O3 .3742 .641 .181