Prehnite
Detrie T A, Ross N L, Angel R J, Gatta G D
European Journal of Mineralogy 21 (2009) 561-570
Equation of state and structure of prehnite to 9.8 GPa
Locality: N'Chwaning II mine, Kuruman, South Africa
Note: P = 9.345 GPa
_database_code_amcsd 0007296
4.4868 5.335 18.168 90 90 90 Pncm
atom      x     y     z occ Uiso
Ca        0    .5 .1006     .013
Al        0     0     0     .007
SiT1     .5     0 .1186     .007
AlT2  .2000   .75   .25  .5 .006
SiT2  .2000   .75   .25  .5 .006
O1   -.7534 .1359 .0727     .012
O2   -.3766 .2224 .1718     .011
O3        0    .5  .228     .044
OH    -.217  .306     0     .010