Kvanefjeldite Johnsen O, Leonardsen E S, Falth L, Annehed H Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 505-512 Crystal structure of kvanefjeldite: The introduction of [Si3O7OH] layers with eight-membered rings Locality: Ilimaussaq alkaline intrusion, South Greenland _database_code_amcsd 0014783 10.213 15.878 9.058 90 90 90 Pcab atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Na1 .68082 -.04507 .79810 1.72 .00388 .00186 .00506 .00013 -.00052 -.00042 Na2 .84529 .30661 .49949 1.68 .00423 .00149 .00540 -.00003 .00000 .00024 Ca 0 0 0 .5 .87 Mn 0 0 0 .5 .87 Si1 .58291 .18032 .30192 .89 .00216 .00095 .00250 .00004 .00010 -.00003 Si2 .54817 .37446 .32987 .99 .00222 .00103 .00308 .00010 .00017 .00000 Si3 .79795 .11392 .50797 .91 .00209 .00101 .00260 -.00004 -.00012 .00001 O1 .51802 .27299 .32541 1.35 .00287 .00124 .00486 .00023 .00023 -.00020 O2 .47871 .11050 .33835 1.30 .00313 .00131 .00392 -.00031 .00002 .00017 O3 .71924 .03448 .56521 1.25 .00246 .00119 .00469 -.00007 .00016 .00024 O4 .59159 .41076 .17584 1.45 .00343 .00163 .00390 .00003 .00055 .00020 O5 .70948 .18010 .41214 1.30 .00298 .00128 .00415 .00002 -.00076 .00018 O6 .63873 .17636 .13244 1.30 .00354 .00137 .00317 .00011 .00054 .00013 O7 .66459 .38868 .45356 1.50 .00348 .00147 .00478 -.00010 -.00076 .00014 O8 .41495 .41813 .39743 1.22 .00289 .00108 .00424 .00027 .00068 .00027 H .697 .433 .445 4.90