Kalsilite Perrotta A J, Smith J V Mineralogical Magazine 35 (1965) 588-595 The crystal structure of kalsilite, KAlSiO4 Sample: Refinement with O2 on triad axis Locality: Mt. Nyiragongo, Congo _database_code_amcsd 0014442 5.161 5.161 8.693 90 90 120 P6_3 atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) K 0 0 .2435 1.18 .0148 .0148 .0034 .0074 0 0 Al 1/3 2/3 .0486 .52 .0063 .0063 -.0005 .0032 0 0 Si 1/3 2/3 .4300 .37 .0044 .0044 .0018 .0022 0 0 O1 .3831 .9864 .4895 .97 .0074 .0084 .0095 .0039 -.0020 -.0016 O2 1/3 2/3 .25 3.58 .0572 .0572 -.0005 .0286 0 0