Gainesite
Moore P B, Araki T, Steele I M, Swihart G H, Kampf A R
American Mineralogist 68 (1983) 1022-1028
Gainesite, sodium zirconium beryllophosphate: A new mineral and its crystal
structure
_database_code_amcsd 0000922
6.567 6.567 17.119 90 90 90 *I4_1/amd
0 -.25 .125
atom x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na1  0 .0352 .0352 .135 0.0198 0.0344 0.0021      0      0 0.0067
Na2  0 .6654 .0398 .104 0.0144 0.0585 0.0027      0      0 0.0058
Zr   0   .25  .375      0.0036 0.0036 0.0007      0      0      0
Be   0   .75  .125   .5 0.0154 0.0154 0.0019      0      0      0
P    0 .1760 .1742   .5 0.0035 0.0053 0.0007      0      0 -.0002
O1   0   .25 .2551      0.0107 0.0107 0.0010      0      0      0
O2   0 .5645 .3781      0.0109 0.0037 0.0012      0      0 -.0003
O3   0 .5540 .1826   .5 0.0125 0.0057 0.0016      0      0 0.0002