Piemontite Catti M, Ferraris G, Ivaldi G American Mineralogist 73 (1988) 1370-1376 Thermal behavior of the crystal structure of strontian piemontite Sample: T = 800 C _database_code_amcsd 0001203 8.934 5.727 10.30 90 115.26 90 P2_1/m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 .7605 .75 .1550 .01091 .01707 .00651 0 .00581 0 Ca2 .5959 .75 .4208 .799 .00850 .02949 .00501 0 .00259 0 Sr .5959 .75 .4208 .201 .00850 .02949 .00501 0 .00259 0 Al1 0 0 0 .810 .00428 .00853 .00380 -.00070 .00169 -.00051 Mn1 0 0 0 .136 .00428 .00853 .00380 -.00070 .00169 -.00051 Fe1 0 0 0 .054 .00428 .00853 .00380 -.00070 .00169 -.00051 Al2 0 0 .5 .00440 .00899 .00420 -.00032 .00179 -.00009 Al3 .29447 .25 .22185 .059 .00367 .01295 .00440 0 .00166 0 Mn3 .29447 .25 .22185 .672 .00367 .01295 .00440 0 .00166 0 Fe3 .29447 .25 .22185 .269 .00367 .01295 .00440 0 .00166 0 Si1 .3390 .75 .0426 .00440 .00983 .00340 0 .00199 0 Si2 .6851 .25 .2757 .00390 .01059 .00340 0 .00179 0 Si3 .1841 .75 .3182 .00390 .00998 .00331 0 .00199 0 O1 .2337 .9882 .0358 .00658 .01600 .00777 .00167 .00418 .00187 O2 .3035 .9780 .3550 .00720 .01600 .00576 -.00280 .00298 .00009 O3 .7949 .0183 .3411 .00608 .01143 .00576 .00140 .00079 -.00009 O4 .0598 .25 .1295 .00497 .01372 .00345 0 .00179 0 O5 .0433 .75 .1471 .00574 .01600 .00345 0 .00169 0 O6 .0656 .75 .4050 .00727 .01372 .00547 0 .00465 0 O7 .5117 .75 .1739 .00574 .02362 .00489 0 .00066 0 O8 .5250 .25 .3090 .00497 .03048 .00777 0 .00435 0 O9 .6301 .25 .1031 .01646 .03811 .00432 0 .00564 0 OH10 .0811 .25 .4304 .00727 .00838 .00576 0 .00431 0