Feldspar Chiari G, Calleri M, Bruno E, Ribbe P H American Mineralogist 60 (1975) 111-119 The structure of partially disordered, synthetic strontium feldspar _database_code_amcsd 0000444 8.388 12.974 14.264 90 115.2 90 I2/c atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Sr .2690 -.002 .0656 .0021 .0027 .0013 .0001 .0002 -.0002 SiT1(o) .0066 .1746 .1083 .9 .0023 .0015 .0006 -.0005 .0003 -.0001 AlT1(o) .0066 .1746 .1083 .1 .0023 .0015 .0006 -.0005 .0003 -.0001 SiT1(z) .0032 .1775 .6164 .1 .0036 .0016 .0004 -.0002 .0006 .0000 AlT1(z) .0032 .1775 .6164 .9 .0036 .0016 .0004 -.0002 .0006 .0000 SiT2(o) .6934 .1200 .1706 .1 .0019 .0016 .0004 -.0002 .0001 -.0001 AlT2(o) .6934 .1200 .1706 .9 .0019 .0016 .0004 -.0002 .0001 -.0001 SiT2(z) .6845 .1137 .6716 .9 .0035 .0012 .0006 .0001 .0005 .0001 AlT2(z) .6845 .1137 .6716 .1 .0035 .0012 .0006 .0001 .0005 .0001 OA(1) .0045 .1289 .0003 .0039 .0023 .0006 .0009 .0008 -.0002 OA(2) .5911 .0002 .1427 .0030 .0017 .0013 .0008 .0003 .0004 OB(o) .8267 .1266 .1054 .0057 .0028 .0012 -.0002 .0017 -.0002 OB(z) .8104 .1263 .6113 .0036 .0031 .0017 -.0013 .0016 .0000 OC(o) .0132 .2984 .1186 .0043 .0026 .0007 -.0011 .0000 -.0004 OC(z) .0188 .3090 .6304 .0043 .0021 .0018 -.0005 .0013 -.0002 OD(o) .1876 .1245 .1955 .0058 .0029 .0010 .0003 .0006 .0002 OD(z) .1960 .1190 .7027 .0036 .0031 .0006 .0004 -.0003 -.0001