Strakhovite
Yamnova N A, Puscharovskii D Y, Mernaf T, Kalinin V V, Kalacheva L V
Kristallografiya 37 (1992) 345-351
Crystal structure of a new natural Na, Ba, Mn-fluorosilicate
_database_code_amcsd 0014192
23.42 12.266 7.181 90 90 90 Pnma
atom      x     y     z Biso
Ba1   .0028   .25 .0306  .39
Ba2  .20420 .0212 .5230  .40
Mn1   .1566 .1249 .0066   .2
Mn2   .3490 .1207 .5044   .4
Na1   .3964   .25  .866  1.6
Si1   .0619 .0038  .248   .4
Si2   .2648   .25  .240   .4
Si3   .2640   .25  .844   .2
Si4   .0662 .0277  .682   .2
O1     .302   .25  .042   .3
O2     .315   .25  .680  1.2
O3    .4186  .018  .970  1.2
O4     .193   .25  .191   .7
F5     .383   .25  .383   .4
O6    .1220 -.002  .805   .2
O7    .1836 -.001  .125   .8
O8    .4927  .031  .255   .6
OH9    .052  .164  .678  1.6
O10   .2822  .139  .345   .7
O11   .2258  .139  .848   .2
O12   .0872  .119  .163   .9
O13   .4190  .115  .646   .7
Wat14  .476   .25  .078   .2