Feldspar
Benna P, Bruno E
American Mineralogist 88 (2003) 1532-1541
Single-crystal in situ high-temperature structural investigation of the I-1 - I2/c phase
transition in Ca0.2Sr0.8Al2Si2O8 feldspar
T = 620 C
_database_code_amcsd 0003181
8.386 12.970 14.283 90 115.46 90 I2/c
atom         x      y     z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ca       .2723 -.0019 .0661  .2 .041   .022   .055   .043   .000   .009  -.004
Sr       .2723 -.0019 .0661  .8 .041   .022   .055   .043   .000   .009  -.004
SiT1(0)  .0070  .1752 .1082     .020   .021   .025   .017  -.004   .010  -.001
AlT1(z)  .0030  .1781 .6165     .020   .022   .023   .018  -.004   .010  -.001
AlT2(0)  .6955  .1209 .1708     .020   .019   .020   .021  -.001   .008   .000
SiT2(z)  .6863  .1133 .6722     .019   .018   .018   .022  -.002   .008  -.001
OA(1)    .0053  .1303 .0005     .030   .039   .036   .018  -.001   .016  -.002
OA(2)    .5930  .0002 .1426     .030   .023   .019   .044   .001   .010   .001
OB(0)    .8290  .1273 .1062     .038   .032   .045   .045  -.012   .025  -.005
OB(z)    .8098  .1276 .6125     .040   .030   .050   .051  -.007   .027   .005
OC(0)    .0137  .2985 .1180     .037   .035   .028   .043  -.010   .013  -.007
OC(z)    .0198  .3100 .6311     .035   .030   .026   .048  -.011   .016  -.006
OD(0)    .1865  .1252 .1957     .042   .035   .055   .024   .005   .003   .005
OD(z)    .1979  .1190 .7038     .039   .035   .043   .027   .003   .004   .002