Tridymite Hirose T, Kihara K, Okuno M, Fujinami S, Shinoda K Journal of Mineralogical and Petrological Sciences 100 (2005) 55-69 X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Locality: synthetic Note: T = 373 K _database_code_amcsd 0013133 25.919 5.004 18.540 90 117.72 90 Aa atom x y z Si1 -.0179 .7013 .0314 Si2 .0112 .2006 -.0383 Si3 .1469 .2121 .0459 Si4 .1814 .7132 -.0151 Si5 .3098 .7084 .0126 Si6 .3481 .2114 -.0444 Si7 .0420 .7942 .2193 Si8 .1163 .2950 .2978 Si9 .2061 .3077 .2329 Si10 .2836 .8056 .2712 Si11 .3687 .7012 .2016 Si12 .4437 .2010 .2715 O1 -.0838 .752 .0116 O2 -.0008 .903 -.0199 O3 -.0122 .398 .0072 O4 .0783 .249 -.0105 O5 .1800 .416 .0159 O6 .1657 -.088 .0399 O7 .2437 .774 -.0074 O8 .3125 .413 -.0167 O9 .3289 -.089 -.0365 O10 .0231 .745 .1249 O11 .1625 .267 .1378 O12 .3527 .738 .1087 O13 -.0133 .749 .2326 O14 .0651 .095 .2423 O15 .0939 .595 .2751 O16 .1723 .249 .2853 O17 .2304 .607 .2502 O18 .2595 .107 .2606 O19 .3114 .756 .2120 O20 .3902 .403 .2299 O21 .4197 .903 .2558 O22 .1338 .244 .3914 O23 .3339 .763 .3629 O24 .4769 .250 .3658