Sanidine Gualtieri A F Journal of Applied Crystallography 33 (2000) 267-278 Accuracy of XRPD QPA using the combined Rietveld-RIR method Locality: Latera, Viterbo, Italy _database_code_amcsd 0012862 8.53573 13.03129 7.17536 90 115.9855 90 C2/m atom x y z occ Uiso K .2840 0 .1371 .027 Al1 .0093 .1844 .2238 .25 .010 Si1 .0093 .1844 .2238 .75 .010 Al2 .7076 .1177 .3443 .25 .011 Si2 .7076 .1177 .3443 .75 .011 O1 0 .1461 0 .023 O2 .6340 0 .2855 .019 O3 .8277 .1454 .2278 .020 O4 .0338 .3098 .2577 .025 O5 .1812 .1264 .4052 .024