Milarite
Hawthorne F C, Kimata M, Cerny P, Ball N A, Rossman G R, Grice J D
American Mineralogist 76 (1991) 1836-1856
The crystal chemistry of the milarite-group minerals
sample #36 from Jaguaracu
10.342 10.342 13.777 90 90 120 P6/mcc
atom      x      y      z  occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
CaA     1/3    2/3 .23572 .383 .0046
YA      1/3    2/3 .23572 .117 .0046
NaB     1/3    2/3  .0499 .012       0.0578 0.0578 0.0649 0.0289      0      0
KC        0      0    .25            0.0182 0.0182 0.0216 0.0091      0      0
Si1  .08132 .33844 .11249            0.0077 0.0107 0.0078 0.0047 -.0004 -.0013
Al2       0     .5    .25 .160       0.0104 0.0105 0.0083 0.0052      0      0
Be3       0     .5    .25 .840       0.0104 0.0105 0.0083 0.0052      0      0
O1    .0946  .3873      0            0.0319 0.0206 0.0080 0.0123      0      0
O2    .1959  .2779  .1333            0.0168 0.0244 0.0197 0.0154 -.0036 -.0052
O3    .1158  .4751  .1821            0.0118 0.0129 0.0113 0.0065 0.0005 -.0028