Monteregianite-(Y)
Ghose S, Sen Gupta P K, Campana C F
American Mineralogist 72 (1987) 365-374
Symmetry and crystal structure of monteregianite, Na4K2Y2Si16O38.10H2O, a
double-sheet silicate with zeolitic properties
Note: Several bond lengths cannot be reproduced with this data, but the authors
no longer have the original data, so they cannot check
_database_code_amcsd 0001072
9.512 23.956 9.617 90 93.85 90 P2_1/n
atom       x      y      z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K1     .0685  .2488  .5702 .62  .0558  .0257  .0458  .0074  .0148  .0045
K2      .541  .2478   .047 .38  .0387  .0316  .0380 -.0104  .0122 -.0062
Na1    .3713  .4991  .6312 .95  .0167  .0219  .0158 -.0019  .0036 -.0046
Na2A      .5     .5      0 .47  .0111  .0257  .0186  .0038  .0083  .0032
Na2B       0     .5     .5 .45  .0109  .0224  .0193  .0004  .0066  .0007
YCe  -.25645 .49845 .74445      .0022  .0053  .0057 -.0001  .0017 -.0002
Si1   -.2661 .18159  .7344      .0051  .0083  .0083  .0006  .0019  .0000
Si2A  -.4972 .38752  .2288      .0035  .0108  .0082 -.0005  .0035  .0000
Si2B   .2275 .38831 -.4931      .0037  .0118  .0084 -.0003  .0045 -.0007
Si3   -.4548 .38870  .5524      .0030  .0120  .0082  .0006  .0008 -.0009
Si4   -.2553 .31464  .7465      .0044  .0092  .0067 -.0001  .0009 -.0008
Si5A   .2269 .11133 -.4953      .0044  .0125  .0077 -.0009  .0032 -.0003
Si5B   .4979 .11160  .2246      .0047  .0125  .0078 -.0007  .0034  .0005
Si6   -.4521 .10614  .5519      .0046  .0133  .0070 -.0001  .0009  .0003
O1    -.2588  .2481  .7358      .0165  .0084  .0207 -.0036  .0000 -.0015
O2A   -.6183  .3414  .1882      .0075  .0204  .0186 -.0060  .0061 -.0050
O2B    .2029  .3384 -.6097      .0262  .0219  .0144 -.0063  .0093 -.0071
O3    -.3907  .1646  .6230      .0108  .0200  .0247  .0001 -.0075 -.0063
O4A    .1264  .1277 -.3711      .0072  .0185  .0112 -.0009  .0084 -.0030
O4B   -.3769  .1272  .1274      .0098  .0162  .0118 -.0036  .0054 -.0008
O5A   -.4349  .3718  .3891      .0215  .0222  .0068  .0062  .0021 -.0021
O5B    .3827  .3798 -.4176      .0039  .0362  .0219 -.0019  .0015  .0083
O6A    .4517  .4501  .2176      .0097  .0161  .0203  .0034  .0029  .0016
O6B    .2110  .4491  .4465      .0175  .0166  .0190  .0038  .0067  .0054
O7    -.4038  .4494  .5892      .0151  .0150  .0161 -.0014  .0015 -.0038
O8    -.3758  .3390  .6428      .0224  .0179  .0189  .0053 -.0089  .0017
O9A   -.2757  .3320  .9063      .0296  .0182  .0108 -.0009  .0107 -.0037
O9B    .8934  .3343 -.2989      .0090  .0274  .0376 -.0095  .0130 -.0050
O10A  -.4379  .1155  .3852      .0202  .0511  .0092 -.0109  .0008 -.0004
O10B   .3843  .1067 -.4185      .0038  .0320  .0177 -.0004  .0041  .0001
O11A   .6829  .4428 -.0799      .0125  .0225  .0119  .0039  .0080  .0091
O11B  -.0778  .4450  .6889      .0165  .0197  .0235  .0127  .0134  .0061
O12   -.3704  .0540  .6113      .0223  .0149  .0421  .0053 -.0083  .0060
O13W1  .8428  .4480  .3443      .0260  .0914  .0583  .0061  .0008 -.0468
O14W2  .3238  .4521  .8570      .0532  .0704  .0293 -.0342  .0064 -.0026
O15W3   .622  .2492   .359 .95  .0715  .0374  .0671  .0034 -.0020 -.0029
O16W4   .891   .187   .356 .46  .0337  .2355  .0435  .0493 -.0199 -.0613
O17W5   .383   .182   .865 .35  .0273  .1617  .0395  .0155 -.0030 -.0390
O18W6   .633   .750  -.610 .37  .1136  .0273  .1160 -.0003 -.0549 -.0050