Gedrite
Papike J J, Ross M
American Mineralogist 55 (1970) 1945-1972
Gedrites: Crystal structures and intracrystalline cation distributions
sample 001
_database_code_amcsd 0000215
18.531 17.741 5.249 90 90 90 Pnma
atom     x      y      z  occ Biso
Si1A .2315 -.1631 -.4487  .66  .43
Al1A .2315 -.1631 -.4487  .34  .43
Si1B .0202 -.1645  .2971  .62  .42
Al1B .0202 -.1645  .2971  .38  .42
Si2A .2278 -.0760  .0502       .46
Si2B .0266 -.0802 -.1985  .84  .58
Al2B .0266 -.0802 -.1985  .16  .58
Mg1  .1244  .1611  .3737  .88  .75
Fe1  .1244  .1611  .3737  .12  .75
Al2  .1248  .0731 -.1281  .60  .34
Mg2  .1248  .0731 -.1281  .36  .34
Fe2  .1248  .0731 -.1281  .04  .34
Mg3  .1249    .25 -.1248  .90  .47
Fe3  .1249    .25 -.1248  .10  .47
Mg4  .1189 -.0145  .3636  .55  .63
Fe4  .1189 -.0145  .3636  .42  .63
Ca4  .1189 -.0145  .3636  .02  .63
Na4  .1189 -.0145  .3636  .01  .63
Na   .1151 -.2500  .8533  .34 1.47
O1A  .1796  .1603  .0312       .40
O1B  .0695  .1584 -.2860       .92
O2A  .1840  .0737 -.4436      1.05
O2B  .0622  .0742  .1875       .50
O3A  .1797    .25 -.4571      1.02
O3B  .0700    .25  .2087       .75
O4A  .1868  .0022  .0425       .62
O4B  .0679 -.0046 -.2985       .74
O5A  .1968 -.1090  .3206      1.06
O5B  .0549 -.1026  .0943       .72
O6A  .2022 -.1313 -.1752       .73
O6B  .0472 -.1450 -.4097      1.49
O7A  .2030 -.2500  .5138       .65
O7B  .0454 -.2500  .2153      1.31