Natrotitanite Stepanov A V, Bekenova G K, Levin V L, Hawthorne F C Mineralogical Magazine 76 (2012) 37-44 Natrotitanite, ideally (Na0.5Y0.5)Ti(SiO4)O, a new mineral from the Verkhnee Espe deposit, Akjailyautas mountains, Eastern Kazakhstan district, Kazakhstan: description and crystal structure Locality: Verkhnee Espe deposit, Kazakhstan _database_code_amcsd 0018669 6.5691 8.6869 7.0924 90 114.1269 90 C2/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na 0 .16960 .75 .39 .01673 .0085 .0078 .0267 0 -.00015 0 Ca 0 .16960 .75 .32 .01673 .0085 .0078 .0267 0 -.00015 0 Y 0 .16960 .75 .15 .01673 .0085 .0078 .0267 0 -.00015 0 Dy 0 .16960 .75 .03 .01673 .0085 .0078 .0267 0 -.00015 0 Yb 0 .16960 .75 .03 .01673 .0085 .0078 .0267 0 -.00015 0 Er 0 .16960 .75 .03 .01673 .0085 .0078 .0267 0 -.00015 0 Ce 0 .16960 .75 .01 .01673 .0085 .0078 .0267 0 -.00015 0 Ho 0 .16960 .75 .01 .01673 .0085 .0078 .0267 0 -.00015 0 Tm 0 .16960 .75 .01 .01673 .0085 .0078 .0267 0 -.00015 0 Gd 0 .16960 .75 .01 .01673 .0085 .0078 .0267 0 -.00015 0 Nd 0 .16960 .75 .01 .01673 .0085 .0078 .0267 0 -.00015 0 Ti 0 .5 0 .94 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 Nb 0 .5 0 .02 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 Sn 0 .5 0 .01 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 Fe 0 .5 0 .01 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 Mn 0 .5 0 .01 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 V 0 .5 0 .01 .01164 .0081 .0100 .0154 -.00018 .00331 .00346 Si 0 .18221 .25 .00775 .0065 .0075 .0092 0 .0032 0 O1 0 .57186 .25 .83 .0102 .0135 .0094 .0083 0 .0049 0 F1 0 .57186 .25 .17 .0102 .0135 .0094 .0083 0 .0049 0 O2 .18651 .06603 .40948 .0121 .0082 .0135 .0131 .0017 .0026 .0028 O3 .10171 .28936 .11898 .0124 .0128 .0100 .0173 .0015 .0091 .0037