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 = 9.03 GPa
_database_code_amcsd 0007295
4.4904 5.342 18.174 90 90 90 Pncm
atom      x     y     z occ Uiso
Ca        0    .5 .0998     .011
Al        0     0     0     .008
SiT1     .5     0 .1193     .009
AlT2  .2004   .75   .25  .5 .007
SiT2  .2004   .75   .25  .5 .007
O1   -.7562 .1341 .0713     .011
O2   -.3783  .224 .1692     .017
O3        0    .5  .230     .038
OH    -.217  .307     0     .006