Fluorapophyllite-(K)
Colville A A, Anderson C P, Black P M
American Mineralogist 56 (1971) 1222-1233
Refinement of the crystal structure of apophyllite I. X-ray diffraction and
physical properties
Locality: Phoenix mine, Keweenaw Peninsula, Michigan, USA
_database_code_amcsd 0000255
8.963 8.963 15.804 90 90 90 P4/mnc
atom     x     y     z occ  B(1,1)  B(2,2)  B(3,3)   B(1,2)   B(1,3)   B(2,3)
K        0     0    .5 .84 .006224 .006224 .004985        0        0        0
Na       0     0    .5 .16 .006224 .006224 .004985        0        0        0
Ca   .1102 .2460     0     .001805 .002116 .000601  .000199        0        0
Si   .2258 .0864 .1900     .001712 .001712 .000801 -.000093 -.000300  .000000
O1   .3635 .1365   .25     .002490 .002490 .000601 -.000311 -.000406 -.000406
O2   .0843 .1899 .2177     .002116 .003205 .001782  .000996 -.000106 -.000600
O3   .2642 .1020 .0923     .003019 .003112 .001001  .000311 -.000406 -.000194
F        0     0     0     .001712 .001712 .002893        0        0        0
Wat4 .2128 .4498 .0900     .008216 .003517 .001501 -.000405 -.000106 -.000706