Na18Mn3Ca3Zr3Si26O76*H2O Rastsvetaeva R K, Khomyakov A P, Nekrasov Y V Crystallography Reports 44 (1999) 824-828 Crystal structure of a novel analog of eudialyte with R3 symmetry Locality: Alluaiv mountain, Lovozero alakaline massif, Kola Peninsula, Russia _database_code_amcsd 0012364 14.182 14.182 30.37 90 90 120 R3 atom x y z occ Biso Na1a .190 .6150 .1527 .5 7.8 Na1b .182 .5690 .1550 .5 5.8 CaM1' .2448 .2447 .0001 .7 1.77 CeM1' .2448 .2447 .0001 .14 1.77 LaM1' .2448 .2447 .0001 .08 1.77 NdM1' .2448 .2447 .0001 .05 1.77 YM1' .2448 .2447 .0001 .03 1.77 Mn1 -.0006 .2718 .0001 1.82 Zr1 .3335 .1589 .1666 .967 1.85 Ti1 .3335 .1589 .1666 .033 1.85 Si1 -.0107 .6076 .0975 1.56 Si1' -.0065 .3953 .0966 1.52 Si2 .1397 .0588 .0809 1.74 Si3 .0612 .3272 .2372 1.46 Si3' .2753 .3225 .2366 1.42 Si4 .2083 .4156 .0767 1.82 Si5 .5257 .2518 .2532 1.70 Si6 .4574 .5405 .2574 1.78 O1 .1763 .3597 .0302 2.3 O2 .1828 .3533 .2210 2.3 O3 .6261 .5909 .0455 3.2 O3' .6403 .0401 .0461 2.2 O4 .2555 .0231 .2055 2.6 O4' .2594 .2256 .2060 3.3 O5 .4752 .2280 .2042 4.3 O6 .2245 .0964 .0423 3.2 O7 .1935 .0863 .1293 2.8 O8 .1072 .3909 .1079 3.5 O8' .2721 .3706 .1085 2.1 O9 .4412 .2044 .2924 2.8 O10 .6147 .2126 .2562 3.0 O11 .0709 .1237 .0771 3.2 O12 .0554 .4370 .2273 3.1 O12' .3910 .4284 .2269 2.1 O13 .0292 .5111 .3049 2.3 O14 .4075 .2981 .1289 3.2 O14' .4120 .1029 .1285 2.5 O15 .0441 .2991 .2883 2.3 O15' .2642 .2924 .2885 1.9 O16 .0200 .5170 .1119 2.3 O17 .2833 .5474 .0708 5.9 O18a .205 .607 .2471 .45 4.0 O18b .377 .593 .2622 .55 3.4 SiT1a 1/3 2/3 .0444 .51 .8 SiT1a 1/3 2/3 .0902 .49 2.2 SiT2 1/3 2/3 .2492 .6 5.4 Nb 1/3 2/3 .2904 .4 2.21 MnM2 .1833 .3551 .3314 .2 1.82 FeM2 .1833 .3551 .3314 .05 1.82 Zr2 .0379 .5259 .0029 .133 2.4 Hf2 .0379 .5259 .0029 .017 2.4 Na2a .1175 .2234 .1534 .397 3.5 Ce2a .1175 .2234 .1534 .04 3.5 La2a .1175 .2234 .1534 .024 3.5 Nd2a .1175 .2234 .1534 .016 3.5 Y2a .1175 .2234 .1534 .003 3.5 Na2b .077 .1620 .1700 .52 7.2 Sr .2396 .1126 .2776 .1 3.9 Na3 .1966 .0950 .2890 .9 2.9 Na4 .4460 .5500 .0036 .6 6.2 Na5a .4388 .2142 .0534 .5 2.9 Na5b .4760 .2355 .0423 .45 2.6 Sr5b .4760 .2355 .0423 .05 2.6 Na6 .5612 .1117 .1804 .967 3.7 K6 .5612 .1117 .1804 .033 3.7 OH1 0 0 .3300 .51 4.3 OH2 1/3 2/3 .1440 .55 2.8 OH3 1/3 2/3 .1960 .53 7.7 OH4 .6050 .4000 -.0058 .44 4.4 OH5 .4110 .6060 .0020 .15 6. Wat1a 0 0 .2480 .43 8.2 Wat1b 0 0 .2890 .32 3.9 F1 2/3 1/3 .0424 .28 2.7 Cl 2/3 1/3 .0424 .17 2.7 Wat3a 2/3 1/3 .1100 .58 6.1 Wat3b 2/3 1/3 .1500 .42 7.9