Orthoclase Jones J B, Taylor W H Acta Crystallographica 14 (1961) 443-456 The structure of orthoclase Locality: Mogok, Upper Burma _database_code_amcsd 0020547 8.5616 12.9962 7.1934 90 116.015 90 C2/m atom x y z occ K .2843 0 .1361 SiT1 .0101 .1848 .2237 .70 AlT1 .0101 .1848 .2237 .30 SiT2 .7084 .1175 .3437 .81 AlT2 .7084 .1175 .3437 .19 Oa1 0 .1461 0 Oa2 .6335 0 .2840 Ob .8276 .1465 .2271 Oc .0347 .3104 .2631 Od .1801 .1256 .4051