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 = 200 C _database_code_amcsd 0003178 8.367 12.968 14.266 90.68 115.51 90.54 I-1 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(0) .2704 .0010 .0667 .2 .027 .011 .037 .029 .000 .005 -.012 Sr(0) .2704 .0010 .0667 .8 .027 .011 .037 .029 .000 .005 -.012 Ca(z) .2690 .0059 .5640 .2 .023 .012 .029 .025 .001 .006 -.004 Sr(z) .2690 .0059 .5640 .8 .023 .012 .029 .025 .001 .006 -.004 SiT1(00) .0073 .1708 .1074 .013 .014 .015 .011 -.003 .007 -.001 AlT1(0z) .0031 .1746 .6155 .012 .012 .013 .012 -.002 .006 .000 AlT1(m0) .0021 .8197 .1173 .012 .013 .014 .011 .002 .006 .000 SiT1(mz) .0069 .8224 .6093 .012 .013 .014 .011 .003 .006 .001 AlT2(00) .6933 .1190 .1679 .012 .010 .012 .013 .000 .005 .000 SiT2(0z) .6838 .1115 .6687 .012 .011 .011 .014 -.001 .006 -.001 SiT2(m0) .6852 .8854 .1748 .012 .010 .011 .013 .001 .004 .000 AlT2(mz) .6936 .8782 .6724 .012 .012 .011 .013 .001 .006 .000 OA(10) .0059 .1285 .9983 .018 .023 .019 .013 -.001 .010 .001 OA(1z) .9953 .1292 .4972 .018 .022 .022 .012 .001 .010 .002 OA(20) .5906 .9970 .1425 .017 .016 .010 .025 .001 .008 .002 OA(2z) .5893 .9974 .6421 .017 .011 .011 .027 -.001 .005 .000 OB(00) .8265 .1205 .1024 .022 .019 .025 .026 -.005 .014 -.001 OB(0z) .8069 .1207 .6076 .022 .020 .024 .027 -.005 .016 .001 OB(m0) .8099 .8677 .1165 .024 .018 .029 .031 .005 .016 -.003 OB(mz) .8286 .8683 .6091 .022 .021 .026 .027 .007 .016 .003 OC(00) .0142 .2933 .1232 .021 .021 .018 .025 -.006 .010 -.005 OC(0z) .0195 .3059 .6369 .021 .019 .016 .030 -.007 .011 -.006 OC(m0) .0153 .6868 .1242 .020 .018 .015 .025 .005 .008 .002 OC(mz) .0115 .6986 .6129 .021 .020 .017 .025 .005 .008 .002 OD(00) .1865 .1201 .1935 .024 .021 .031 .016 .003 .004 .002 OD(0z) .1966 .1144 .6999 .021 .018 .024 .015 .002 .002 .001 OD(m0) .1987 .8775 .2071 .022 .018 .026 .016 -.001 .001 -.002 OD(mz) .1879 .8704 .6991 .024 .018 .029 .017 -.001 .002 -.003