Szymanskiite Szymanski J T, Roberts A C The Canadian Mineralogist 28 (1990) 709-718 The crystal structure of szymanskiite, a partly disordered (Hg-Hg)2+, (Ni,Mg)2+ hydronium-carbonate-hydroxide-hydrate _database_code_amcsd 0005242 17.3984 17.3984 6.0078 90 90 120 P6_3 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Hg1 2/3 1/3 .0440 .0444 .04308 .0030 .02154 0 0 Hg2 1/3 2/3 -.0408 .0392 .03791 .0112 .01896 0 0 Hg3 .44218 .29903 .25 .0339 .0143 .0290 .0155 .0060 -.0064 Hg4 .44636 .15674 .2545 .0309 .0133 .0229 .0139 .0046 -.0009 Ni .0049 .5019 -.0093 .68 .0030 .0122 .0061 .0029 .0031 .0030 Mg .0049 .5019 -.0093 .32 .0030 .0122 .0061 .0029 .0031 .0030 O1 .2495 .5667 .241 .0134 O2 .4274 .4141 .237 .014 O3 .4387 .0325 .258 .013 C1 .1683 .5547 .246 .015 O4 .1316 .5428 .062 .015 O5 .1322 .5550 .442 .017 C2 .0425 .2461 .221 .022 O6 .0742 .3328 .297 .062 O7 .228 .040 .313 .200 O8 .111 .230 .207 .064 O9 .2685 .4075 .219 .72 .034 O10 .240 .339 .22 .35 .081 O11 .234 .198 .351 .73 .132