Fluorapophyllite-(Na)
Miura Y, Kato T, Rucklidge J C, Matsueda H
American Mineralogist 66 (1981) 410-423
Natroapophyllite, a new orthorhombic sodium analog of apophyllite
II. Crystal structure
Locality: the Sampo mine, Okayama, Japan
_database_code_amcsd 0000830
8.875 8.881 15.79 90 90 90 Pnnm
atom     x     y     z Biso
Si1  .2289 .0833 .1890 1.12
Si2  .4161 .2708 .3108 1.13
Ca1  .1143 .2465     0 1.20
Ca2  .7537 .1148     0 1.25
Na       0     0    .5 2.84
F        0     0     0 1.87
O1   .3671 .1322 .2513 1.36
O2   .0882 .1902 .2162 1.63
O21  .3099 .4123 .2839 1.59
O3   .2696 .0987 .0921 1.75
O31  .4016 .2305 .4079 1.66
O4   .2286 .4505 .0887 2.45
O41  .5502 .2253 .0890 2.70
H1     .47   .17   .05 1.60
H11    .17   .54   .08 1.40
H2     .16   .43   .14 0.80
H21    .56   .31   .14 3.20