Tridymite Graetsch H, Topalovic-Dierdorf I European Journal of Mineralogy 8 (1996) 103-113 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1) Sample: superstructure Locality: synthetic _database_code_amcsd 0006615 15.021 8.6004 16.4338 90. 91.512 90. C1 atom x y z Uiso Si1(1) .1924 .1187 .1641 .0238 Si1(2) .5320 .1363 .1832 .0304 Si1(3) .8524 .1411 .1504 .0202 Si1(4) .1847 .7907 .0857 .0303 Si1(5) .0286 .3092 .1122 .0331 Si1(6) .3619 .2885 .1138 .0288 Si2(1) .1940 .1694 .3521 .0212 Si2(2) .2015 .8512 .4348 .0211 Si2(3) .5331 .1831 .3709 .0172 Si2(4) .0214 .3365 .4082 .0291 Si2(5) .8522 .1912 .3386 .0204 Si2(6) .3577 .3576 .4061 .0275 Si3(1) .2022 .8006 .6219 .0269 Si3(2) .0220 .2880 .5947 .0186 Si3(3) .3591 .3075 .5935 .0246 Si3(4) .1938 .1442 .6677 .0300 Si3(5) .5236 .1254 .6499 .0294 Si3(6) .8675 .1241 .6813 .0195 Si4(1) .1919 .1956 .8540 .0325 Si4(2) .1871 .8421 .8980 .0268 Si4(3) .5205 .1762 .8381 .0270 Si4(4) .0296 .3634 .9242 .0298 Si4(5) .8679 .1759 .8688 .0289 Si4(6) .3630 .3388 .9267 .0229 O1(1) .2623 .2456 .1314 .0341 O1(2) .5953 .2342 .1262 .0366 O1(3) .9286 .2544 .1167 .0348 O1(4) .2167 .9518 .1298 .0343 O1(5) .2639 .6685 .0969 .0268 O1(6) .0486 .4543 .1712 .0317 O1(7) .0972 .1693 .1358 .0489 O1(8) .3832 .4627 .1450 .0357 O1(9) .4313 .1773 .1596 .0323 O1/2(1) .1979 .1028 .2610 .0476 O1/2(2) .5547 .1832 .2750 .0261 O1/2(3) .8338 .1846 .2433 .0354 O2(1) .2185 .0313 .4143 .0339 O2(2) .2642 .3058 .3687 .0478 O2(3) .2605 .7463 .3806 .0361 O2(4) .5488 .0148 .4095 .0443 O2(5) .5993 .3021 .4188 .0203 O2(6) .0957 .2389 .3642 .0339 O2(7) .8835 .0242 .3715 .0274 O2(8) .9299 .3177 .3611 .0357 O2(9) .4317 .2329 .3829 .0339 O2/3(1) .2283 .8229 .5289 .0270 O2/3(2) .0124 .2738 .4999 .0364 O2/3(3) .3465 .3756 .5020 .0509 O3(1) .2166 .9603 .6719 .0351 O3(2) .2652 .6728 .6608 .0323 O3(3) .0520 .4566 .6221 .0323 O3(4) .0976 .1703 .6208 .0530 O3(5) .3833 .4466 .6532 .0394 O3(6) .4336 .1779 .6001 .0389 O3(7) .2660 .2413 .6136 .0402 O3(8) .5992 .2519 .6282 .0257 O3(9) .9283 .2457 .6348 .0300 O3/4(1) .1922 .2105 .7591 .0432 O3/4(2) .5043 .1271 .7462 .0387 O3/4(3) .8874 .1302 .7782 .0307 O4(1) .2178 .0194 .8823 .0386 O4(2) .2614 .3102 .8989 .0359 O4(3) .2661 .7311 .8732 .0293 O4(4) .5503 .0323 .8920 .0439 O4(5) .5997 .3032 .8437 .0208 O4(6) .0962 .2381 .8828 .0349 O4(7) .8821 .0248 .9247 .0322 O4(8) .9278 .3148 .9024 .0276 O4(9) .4298 .2452 .8700 .0283 O4/1(1) .1620 .8245 -.0098 .0363 O4/1(2) .0447 .3655 .0195 .0343 O4/1(3) .3777 .2816 .0170 .0499