Slawsonite
Griffen D T, Ribbe P H, Gibbs G V
American Mineralogist 62 (1977) 31-35
The structure of slawsonite, a strontium analog of paracelsian
_database_code_amcsd 0000553
8.888 9.344 8.326 90 90.33 90 P2_1/a
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Sr   .8902 .4122 .2503 .87  .0030  .0020  .0029  .0000  .0000  .0001
Ca   .8902 .4122 .2503 .13  .0030  .0020  .0029  .0000  .0000  .0001
Si1o .2321 .9249 .9311 .50  .0009  .0010  .0012  .0001  .0000  .0002
Al1o .2321 .9249 .9311 .50  .0009  .0010  .0012  .0001  .0000  .0002
Si1m .2405 .9199 .5605 .50  .0006  .0009  .0011  .0000  .0002  .0000
Al1m .2405 .9199 .5605 .50  .0006  .0009  .0011  .0000  .0002  .0000
Si2o .0595 .2006 .9440 .50  .0008  .0006  .0010 -.0002  .0000  .0001
Al2o .0595 .2006 .9440 .50  .0008  .0006  .0010 -.0002  .0000  .0001
Si2m .0541 .1944 .5706 .50  .0009  .0007  .0010 -.0001  .0001  .0000
Al2m .0541 .1944 .5706 .50  .0009  .0007  .0010 -.0001  .0001  .0000
O1o  .1910 .0934 .0100      .0021  .0015  .0022  .0007  .0003  .0000
O1m  .1875 .0740 .4937      .0025  .0010  .0028  .0008  .0008  .0005
O2o  .1192 .3658 .9458      .0013  .0007  .0022 -.0002 -.0007  .0003
O2m  .1236 .3699 .5573      .0017  .0012  .0020 -.0001  .0011 -.0002
O3o  .9202 .1919 .0699      .0013  .0016  .0015 -.0002  .0003 -.0002
O3m  .8979 .1923 .4399      .0010  .0016  .0029  .0000  .0001  .0004
O4   .0092 .1545 .7662      .0042  .0027  .0013 -.0012  .0000  .0000
O5   .3139 .9252 .7407      .0012  .0025  .0017 -.0006  .0003  .0002