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 = 4.279 GPa
_database_code_amcsd 0007290
4.5539 5.4148 18.317 90 90 90 Pncm
atom      x     y     z occ Uiso
Ca        0    .5 .0996     .013
Al        0     0     0     .007
SiT1     .5     0 .1192     .007
AlT2  .1934   .75   .25  .5 .006
SiT2  .1934   .75   .25  .5 .006
O1   -.7506 .1348 .0717     .011
O2   -.3709 .2160 .1717     .011
O3        0    .5 .2302     .018
OH   -.2081 .3028     0     .009