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 = 0.0001 GPa _database_code_amcsd 0007288 4.6248 5.4825 18.475 90 90 90 Pncm atom x y z occ Uiso Ca 0 .5 .0986 .013 Al 0 0 0 .008 SiT1 .5 0 .1201 .007 AlT2 .1918 .75 .25 .5 .006 SiT2 .1918 .75 .25 .5 .006 O1 -.7514 .1323 .0708 .008 O2 -.3688 .2148 .1714 .011 O3 0 .5 .227 .018 OH -.2060 .2985 0 .009