Sanidine Ohashi Y, Finger LW Carnegie Institution of Washington: Yearbook 74 (1975) 569-572 An effect of temperature on the feldspar structure: crystal structure of sanidine at 800C Note: T = 800 C Locality: Laacher See, Eifel District, Germany _database_code_amcsd 0020566 8.6820 13.0130 7.1840 90 115.710 90 C2/m atom x y z occ Biso K .2924 0 .1426 .86 7.29 Na .2924 0 .1426 .14 7.29 SiT1 .0108 .1867 .2245 .68 2.49 AlT1 .0108 .1867 .2245 .32 2.49 SiT2 .7156 .1185 .3462 .82 2.45 AlT2 .7156 .1185 .3462 .18 2.45 Oa1 0 .1489 0 4.06 Oa2 .6503 0 .2895 3.97 Ob .8326 .1503 .2314 4.88 Oc .0427 .3114 .2615 4.12 Od .1755 .1261 .4056 4.34