American Mineralogist Crystal Structure Database

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Kvanefjeldite
Download hom/kvanefjeldite.pdf
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
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