Davinciite Rastsvetaeva R K, Rozenberg K A, Khomyakov A P Doklady Chemistry 424 (2009) 11-14 Crystal structure of high-silica K,Na-ordered acentric eudialyte analogue Locality: Khibiny alkaline massif, Russia _database_code_amcsd 0019916 14.2956 14.2956 30.0228 90 90 120 R3m atom x y z occ Uiso Zr .3328 .1664 .1668 .93 .015 Hf .3328 .1664 .1668 .01 .015 Ti .3328 .1664 .1668 .05 .015 Nb .3328 .1664 .1668 .01 .015 Ca1 .9999 .2600 .9998 .006 Si1 .5273 .2636 .2510 .006 Si2 .9946 .6028 .0976 .006 Si3 .2093 .4186 .0751 .011 Si4 .0856 .5428 .2578 .012 Si5 .0582 .3290 .2364 .010 Si6 .1414 .0707 .0832 .011 O1 .4747 .2373 .2005 .018 O2 .2625 .0284 .2063 .018 O3 .4019 .2971 .1243 .018 O4 .6055 .3945 .2540 .017 O5 .4428 .2214 .2879 .008 O6 .4121 .0287 .0445 .009 O7 .1070 .3913 .1064 .020 O8 .0109 .5055 .1173 .019 O9 .2737 .5475 .0621 .044 O10 .1770 .3540 .0290 .014 O11 .0298 .5149 .3038 .011 O12 .1766 .3532 .2179 .012 O13 .0449 .3005 .2886 .014 O14 .3873 .4361 .2239 .021 O15 .3931 .6069 .2545 .036 O16 .0615 .1231 .0771 .011 O17 .1821 .0910 .1328 .016 O18 .2336 .1168 .0439 .015 FeM2 .4987 .5012 .0003 .75 .011 MnM2 .4987 .5012 .0003 .05 .011 NaM2 .4987 .5012 .0003 .19 .011 Si3a 1/3 2/3 .2473 .012 Si4a 1/3 2/3 .0485 .026 NaA1 .1083 .2165 .1542 .036 NaA2 .5812 .4188 .1650 .033 KA3a .2404 .4808 -.0464 .53 .013 NaA3b .2328 .1164 .2769 .235 .024 KA3b .2328 .1164 .2769 .235 .024 NaA4a .4614 .2307 .0499 .89 .018 SrA4a .4614 .2307 .0499 .04 .018 SrA4b .4932 .2466 .0445 .06 .010 BaA4b .4932 .2466 .0445 .01 .010 Na5a .2548 .5096 .1743 .58 .082 Na5b .4193 .5807 .1638 .42 .056 Cl1 0 0 .2424 .54 .036 Cl2 2/3 1/3 .1026 .70 .036 Wat11 0 0 .2194 .23 .039 Cl11 0 0 .2194 .23 .039 Cl21 2/3 1/3 .049 .15 .029 Wat21 2/3 1/3 .049 .15 .029 OH1 .410 .590 .004 .002 .045 O1 .410 .590 .004 .003 .045 OH2 .582 .418 -.002 .002 .023 O2 .582 .418 -.002 .003 .023 OH3 1/3 2/3 .140 .256 .02 O3 1/3 2/3 .140 .313 .02 OH4 1/3 2/3 .1967 .225 .013 O4 1/3 2/3 .1967 .275 .013 OH5 1/3 2/3 .995 .184 .057 O5 1/3 2/3 .995 .226 .057 OH6 1/3 2/3 .330 .225 .076 O6 1/3 2/3 .330 .275 .076