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 #30 from Rossing
10.396 10.396 13.781 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 .2390   .5 .0141
WatB   1/3   2/3 .0298 .235       0.0548 0.0548 0.0927 0.0274      0      0
NaB    1/3   2/3 .0298 .087       0.0548 0.0548 0.0927 0.0274      0      0
KC       0     0   .25            0.0172 0.0172 0.0207 0.0086      0      0
Si1  .0811 .3363 .1127            0.0075 0.0095 0.0074 0.0043 -.0005 -.0011
Al2      0    .5   .25 .217       0.0094 0.0048 0.0093 0.0047      0      0
Be2      0    .5   .25 .783       0.0094 0.0048 0.0093 0.0047      0      0
O1   .0940 .3837     0            0.0330 0.0225 0.0067 0.0155      0      0
O2   .1949 .2759 .1342            0.0159 0.0235 0.0188 0.0146 -.0034 -.0046
O3   .1147 .4733 .1809            0.0120 0.0110 0.0098 0.0060 -.0006 -.0023