Raslakite Ekimenkova I A, Rastsvetaeva R K, Chukanov N V Doklady Chemistry 374 (2000) 195-198 Ordering of calcium and iron in a mineral of the eudialyte group with the symmetry R3 Locality: Lovozero massif, Kola Peninsula, Russia _database_code_amcsd 0012506 14.229 14.229 30.019 90 90 120 R3 atom x y z occ Biso Zr .3334 .1667 .1666 1.65 Si1 .1396 .0662 .0819 1.53 Si2 .5262 .2597 .2520 1.64 Si3 .4585 .5420 .2582 1.36 Si4 .2084 .4168 .0756 1.64 Si5a .2712 .3258 .2371 1.29 Si5b .0575 .3279 .2369 1.15 Si6a .9914 .6030 .0968 1.24 Si6b .9936 .3913 .0969 1.08 Ola .0617 .1225 .0782 2.4 O1b .2236 .1048 .0412 3.1 O2 .1886 .0891 .1320 3.0 O3a .2635 .2305 .2074 2.3 O3b .2587 .2969 .2895 1.9 O4a .1789 .3519 .2195 1.6 O4b .3904 .4316 .2263 2.2 O5 .0249 .5106 .3054 1.9 O6a .2139 .6074 .2529 .5 2.6 O6b .396 .611 .2725 .5 4.1 O7a .0530 .4369 .2269 2.7 O7b .0437 .2992 .2894 1.9 O8 .1771 .3582 .0297 2.7 O9 .2717 .5434 .0724 4.2 O10a .1064 .3899 .1066 2.2 Ol0b .2772 .3777 .1075 2.0 O11a .4378 .2132 .2897 3.0 Ollb .4750 .2337 .2039 2.6 O12 .6050 .2100 .2563 2.0 O13 .2600 .0277 .2067 2.4 O14 .6256 .0352 .0449 2.1 O15a .4054 .2997 .1266 2.3 O15b .0207 .5137 .1132 2.2 O16 .6218 .5885 .0451 1.9 O17 .4088 .1039 .1269 2.2 FeMla .0005 .2642 .0001 .733 1.73 CaMla .0005 .2642 .0001 .167 1.73 MnMla .0005 .2642 .0001 .1 1.73 CaM1b .2596 .2601 .0000 .9 1.61 CeM1b .2596 .2601 .0000 .1 1.61 ZrM2.4 .5021 .0065 -.0004 .267 1.79 HfM2.4 .5021 .0065 -.0004 .033 1.79 MnM2.5a .1496 .3025 .3365 .20 1.07 NaM2.5b .5229 .0515 -.0042 .50 2.04 NbM3 1/3 2/3 .2942 .20 2.56 TiM3 1/3 2/3 .2942 .15 2.56 MgM3 1/3 2/3 .2942 .15 2.56 SiM3a 1/3 2/3 .2477 .40 2.1 AlM3a 1/3 2/3 .2477 .10 2.1 Si7 1/3 2/3 .0877 .50 1.8 Si7a 1/3 2/3 .0505 .40 2.0 Al7a 1/3 2/3 .0505 .10 2.0 Na1a .2562 .5244 .1855 .45 4.4 Na1b .172 .566 .1605 .35 5.3 Na1c .378 .552 .1629 .20 6.0 Na2a .5536 .4425 .1777 .38 2.49 Ca2a .5536 .4425 .1777 .07 2.49 Na2b .5849 .4159 .1633 .518 3.3 Ca2b .5849 .4159 .1633 .032 3.3 Na3 .4595 .2304 .0495 .933 2.6 Ca3 .4595 .2304 .0495 .067 2.6 Na4a .2216 .1098 .2820 .40 2.62 Sr4a .2216 .1098 .2820 .05 2.62 K4a .2216 .1098 .2820 .05 2.62 Na4b .1940 .0980 .2893 .466 1.93 Sr4b .1940 .0980 .2893 .017 1.93 K4b .1940 .0980 .2893 .017 1.93 Na5 .1097 .2162 .1535 4.3 O18a .197 .591 .0063 .15 1.5 OH18a .197 .591 .0063 .05 1.5 O18b 0 0 .333 .38 6.4 OH18b 0 0 .333 .12 6.4 O19 .6234 .3959 -.0025 .38 4.8 OH19 .6234 .3959 -.0025 .12 4.8 O20a 1/3 2/3 .1402 .38 1.2 OH20a 1/3 2/3 .1402 .12 1.2 O20b 1/3 2/3 .1968 .38 4.3 OH20b 1/3 2/3 .1968 .12 4.3 Cl1a 0 0 .2343 .50 3.2 Cl1b 0 0 .2592 .30 3.2 Cl1c 0 0 .2869 .20 4.8 Wat2a 2/3 1/3 .0848 .75 3.1 Wat2b 2/3 1/3 .1054 .25 5.4