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 = 7.818 GPa
_database_code_amcsd 0007293
4.5058 5.3618 18.208 90 90 90 Pncm
atom     x     y     z occ Uiso
Ca       0    .5 .0995     .014
Al       0     0     0     .006
SiT1    .5     0 .1197     .010
AlT2 .1965   .75   .25  .5 .008
SiT2 .1965   .75   .25  .5 .008
O1   -.757 .1346 .0724     .012
O2   -.379  .223 .1693     .015
O3       0    .5  .224     .025
OH   -.217  .307     0     .010