Trolleite
Moore P B, Araki T
American Mineralogist 59 (1974) 974-984
Trolleite, Al4(OH)3[PO4]3: A very dense structure with octahedral
face-sharing dimers
_database_code_amcsd 0000415
18.894 7.161 7.162 90 99.99 90 I2/c
atom      x       y       z Biso
Al1  .16778 -.00654  .32059  .38
Al2  .07570  .27118  .41714  .43
P1        0  .88269     .25  .35
P2   .16844  .36728  .08109  .36
O1   .06458  .01173  .32611  .60
O2   .02064  .76272  .09579  .74
O3   .23738  .46488  .16861  .73
O4   .11114  .50844  .00803  .73
O5   .14191  .24551  .23708  .56
O6   .18216  .23516 -.07554  .75
Oh1       0  .36428     .25  .62
Oh2  .16141  .87900  .06966  .53
H1        0    .484     .25
H2     .190    .809    .072