Slawsonite
Benna P, Nestola F, Ballaran T B, Balic-Zunic T, Lundegaard L F, Bruno E
American Mineralogist 92 (2007) 1190-1199
The high-pressure structural configurations of Ca0.2Sr0.8Al2Si2O8 feldspar:
The I-1-I2/c and I2/c-P2_1/c phase transitions
Sample: P = 3.2 GPa
Locality: synthetic
_database_code_amcsd 0004408
8.256 12.842 14.088 90.51 115.38 90.88 I-1
atom      x     y     z occ Uiso
Ca0   .2675 .0033 .0674  .2 .019
Sr0   .2675 .0033 .0674  .8 .019
Caz   .2662 .0059 .5645  .2 .013
Srz   .2662 .0059 .5645  .8 .013
Si100 .0023 .1691 .1061     .010
Al10z .9992 .1725 .6154     .009
Al1m0 .9985 .8182 .1176     .011
Si1mz .0016 .8193 .6084     .009
Al200 .6881 .1198 .1674     .010
Si20z .6790 .1105 .6678     .011
Si2m0 .6793 .8841 .1751     .010
Al2mz .6883 .8765 .6724     .010
OA10  .0031 .1260 .9972     .013
OA1z  .9964 .1336 .4981     .014
OA20  .5829 .9929 .1433     .019
OA2z  .5829 .9972 .6450     .018
OB00  .8209 .1125 .0991     .019
OB0z  .7996 .1188 .6028     .017
OBm0  .8018 .8642 .1127     .017
OBmz  .8210 .8674 .6068     .017
OC00  .0043 .2967 .1214     .012
OC0z  .0116 .3035 .6397     .017
OCm0  .0072 .6864 .1228     .019
OCmz  .9987 .6913 .6116     .018
OD00  .1860 .1209 .1925     .015
OD0z  .1966 .1167 .7001     .018
ODm0  .1977 .8768 .2084     .017
ODmz  .1877 .8713 .6994     .017