Merrillite
Hughes J M, Jolliff B L, Gunter M E
American Mineralogist 91 (2006) 1547-1552
The atomic arrangement of merrillite from the Fra Mauro Formation, Apollo 14
lunar mission: The first structure of merrillite from the Moon
_database_code_amcsd 0004238
10.2909 10.2909 36.8746 90 90 120 R3c
atom      x     y      z occ  Uiso
Na        0     0  .8137 .23   .07
Ca1   .2763 .1398 .67489     .0247
Ca2   .2745 .1376 .56760     .0195
Ca3   .3805 .1887 .76925     .0251
Mg        0     0      0 .80 .0144
Fe        0     0      0 .20 .0144
P1        0     0 .73247 .93 .0193
P2    .3151 .1390 .86556 .88  .011
P3    .3429 .1539 .96904 .89  .016
O1        0     0  .6905      .027
O2   -.0075 .1375  .7450      .032
O3    .2713 .0915  .8262      .031
O4     .247  .233  .8792      .029
O5    .2717 -.001  .8881      .021
O6    .4887  .245  .8694      .029
O7    .3776  .189  .0092      .028
O8    .3993 .0509  .9564      .028
O9    .4141 .3040  .9491      .026
O10   .1723  .084  .9622      .026