data_[Na18Mg2Ta10Si18O72]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Ta  1.5000  1.4500  0.8200
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [9.0641]
_cell_length_b [12.9027]
_cell_length_c [15.6635]
_cell_angle_alpha [114.1672]
_cell_angle_beta [106.5542]
_cell_angle_gamma [90.0815]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [Na9MgTa5(SiO4)9]
_chemical_formula_sum '[Na18 Mg2 Ta10 Si18 O72]'
_cell_volume [1587.3729]
_cell_formula_units_Z [2]
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
[
  Na  Na0  1  0.0667  0.7907  0.6049  1
  Na  Na1  1  0.1067  0.7906  0.9494  1
  Na  Na2  1  0.2762  0.5630  0.7103  1
  Na  Na3  1  0.2827  0.5353  0.0718  1
  Na  Na4  1  0.3301  0.8369  0.1710  1
  Na  Na5  1  0.3347  0.3324  0.1710  1
  Na  Na6  1  0.4075  0.1255  0.2749  1
  Na  Na7  1  0.4413  0.1212  0.6176  1
  Na  Na8  1  0.5800  0.8334  0.0294  1
  Na  Na9  1  0.6004  0.8758  0.7506  1
  Na  Na10  1  0.6055  0.8976  0.3844  1
  Na  Na11  1  0.6516  0.6699  0.8214  1
  Na  Na12  1  0.6685  0.1657  0.8472  1
  Na  Na13  1  0.7099  0.4649  0.9245  1
  Na  Na14  1  0.9132  0.1559  0.6943  1
  Na  Na15  1  0.9412  0.2109  0.4211  1
  Na  Na16  1  0.9865  0.0012  0.4914  1
  Na  Na17  1  0.9895  0.4919  0.4873  1
  Mg  Mg18  1  0.3780  0.8157  0.8341  1
  Mg  Mg19  1  0.7109  0.1485  0.5016  1
  Ta  Ta20  1  0.0440  0.9794  0.1655  1
  Ta  Ta21  1  0.0445  0.4764  0.1696  1
  Ta  Ta22  1  0.2830  0.8573  0.4994  1
  Ta  Ta23  1  0.2958  0.3567  0.4988  1
  Ta  Ta24  1  0.3783  0.3109  0.8357  1
  Ta  Ta25  1  0.6207  0.1911  0.1657  1
  Ta  Ta26  1  0.6230  0.6906  0.1688  1
  Ta  Ta27  1  0.7064  0.6378  0.4967  1
  Ta  Ta28  1  0.9513  0.5235  0.8309  1
  Ta  Ta29  1  0.9625  0.0213  0.8372  1
  Si  Si30  1  0.0275  0.2748  0.2635  1
  Si  Si31  1  0.0631  0.3188  0.9284  1
  Si  Si32  1  0.0743  0.3222  0.6404  1
  Si  Si33  1  0.2718  0.0144  0.7391  1
  Si  Si34  1  0.2769  0.0127  0.0287  1
  Si  Si35  1  0.3045  0.0571  0.4045  1
  Si  Si36  1  0.3640  0.6099  0.9315  1
  Si  Si37  1  0.3945  0.6509  0.5913  1
  Si  Si38  1  0.4030  0.6544  0.3077  1
  Si  Si39  1  0.6028  0.3474  0.6933  1
  Si  Si40  1  0.6107  0.3437  0.4046  1
  Si  Si41  1  0.6385  0.3923  0.0732  1
  Si  Si42  1  0.6971  0.9387  0.5974  1
  Si  Si43  1  0.7312  0.9869  0.2613  1
  Si  Si44  1  0.7404  0.9888  0.9725  1
  Si  Si45  1  0.9295  0.6812  0.3610  1
  Si  Si46  1  0.9373  0.6819  0.0732  1
  Si  Si47  1  0.9725  0.7209  0.7363  1
  O  O48  1  0.0009  0.5790  0.2867  1
  O  O49  1  0.0039  0.4280  0.7163  1
  O  O50  1  0.0299  0.5954  0.1153  1
  O  O51  1  0.0458  0.8041  0.1141  1
  O  O52  1  0.0566  0.7969  0.4298  1
  O  O53  1  0.0829  0.3523  0.2142  1
  O  O54  1  0.0841  0.1478  0.2222  1
  O  O55  1  0.1019  0.3370  0.3838  1
  O  O56  1  0.1023  0.0262  0.7620  1
  O  O57  1  0.1103  0.3756  0.0490  1
  O  O58  1  0.1273  0.0389  0.9525  1
  O  O59  1  0.1339  0.3757  0.5753  1
  O  O60  1  0.1562  0.7286  0.7568  1
  O  O61  1  0.1720  0.5980  0.9077  1
  O  O62  1  0.2122  0.9740  0.1028  1
  O  O63  1  0.2166  0.9914  0.2845  1
  O  O64  1  0.2183  0.9605  0.6163  1
  O  O65  1  0.2247  0.3018  0.7186  1
  O  O66  1  0.2277  0.3090  0.9027  1
  O  O67  1  0.2465  0.9883  0.4604  1
  O  O68  1  0.2535  0.1879  0.4504  1
  O  O69  1  0.2764  0.5396  0.2326  1
  O  O70  1  0.2836  0.5260  0.5395  1
  O  O71  1  0.2993  0.7402  0.5510  1
  O  O72  1  0.3347  0.7602  0.3810  1
  O  O73  1  0.3463  0.9023  0.9684  1
  O  O74  1  0.3708  0.9329  0.7790  1
  O  O75  1  0.3743  0.1412  0.7795  1
  O  O76  1  0.3911  0.1344  0.0997  1
  O  O77  1  0.4118  0.4801  0.9010  1
  O  O78  1  0.4325  0.6740  0.8800  1
  O  O79  1  0.4330  0.6777  0.0537  1
  O  O80  1  0.4429  0.3519  0.4316  1
  O  O81  1  0.4483  0.7002  0.7091  1
  O  O82  1  0.4546  0.3800  0.6224  1
  O  O83  1  0.4605  0.7059  0.2394  1
  O  O84  1  0.4874  0.0640  0.4218  1
  O  O85  1  0.5039  0.9280  0.5720  1
  O  O86  1  0.5410  0.3148  0.7716  1
  O  O87  1  0.5487  0.6349  0.5544  1
  O  O88  1  0.5493  0.2895  0.2821  1
  O  O89  1  0.5529  0.6237  0.3745  1
  O  O90  1  0.5671  0.3257  0.9525  1
  O  O91  1  0.5828  0.3194  0.1243  1
  O  O92  1  0.5843  0.5218  0.1139  1
  O  O93  1  0.6180  0.8606  0.2066  1
  O  O94  1  0.6255  0.8704  0.9044  1
  O  O95  1  0.6304  0.0703  0.2168  1
  O  O96  1  0.6668  0.0901  0.0476  1
  O  O97  1  0.6706  0.2365  0.6335  1
  O  O98  1  0.7080  0.4714  0.4483  1
  O  O99  1  0.7091  0.2622  0.4438  1
  O  O100  1  0.7259  0.4668  0.7664  1
  O  O101  1  0.7398  0.8076  0.5559  1
  O  O102  1  0.7611  0.0073  0.5469  1
  O  O103  1  0.7683  0.0040  0.7191  1
  O  O104  1  0.7705  0.6927  0.0987  1
  O  O105  1  0.7819  0.7132  0.2898  1
  O  O106  1  0.7846  0.0318  0.3779  1
  O  O107  1  0.7997  0.0392  0.9051  1
  O  O108  1  0.8277  0.4130  0.0972  1
  O  O109  1  0.8383  0.2560  0.2385  1
  O  O110  1  0.8798  0.6382  0.4345  1
  O  O111  1  0.8823  0.9702  0.2200  1
  O  O112  1  0.8847  0.6555  0.6173  1
  O  O113  1  0.8868  0.6235  0.9520  1
  O  O114  1  0.8938  0.9630  0.0439  1
  O  O115  1  0.9132  0.6557  0.7952  1
  O  O116  1  0.9256  0.8536  0.7827  1
  O  O117  1  0.9557  0.1941  0.8716  1
  O  O118  1  0.9596  0.2046  0.5752  1
  O  O119  1  0.9707  0.4074  0.8869  1
]