Carpholite
Naumova I S, Pobedimskaya E A, Belov N V
Kristallografiya 19 (1974) 1155-1160
Crystal structure of carpholite MnAl2(Si2O6)(OH)4
_database_code_amcsd 0017756
13.831 20.296 5.121 90 90 90 *Ccca
0 .75 .75
atom     x     y     z Biso
Mn       0 .8727   .75  .43
Al1  .1933   .75   .75   .3
Al2      0 .9614   .25  .44
Si   .1941 .8794  .413  .25
OH1  .1035 .8072 .8872  .96
O2   .2063    .8 .4332   .7
O3   .2448 .9114 .6709  .43
O4   .0825 .8993 .3983  .66
OH5  .0687  .967 .9312  .65