Tassieite
Grew E S, Armbruster T, Medenbach O, Yates M G, Carson C J
The Canadian Mineralogist 45 (2007) 293-305
Tassieite, (Na,_)Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6*2H2O, a new
hydrothermal wicksite-group mineral in fluorapatite nodules from granulite-
facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica
Locality: Larsemann Hills, Prydz Bay, East Antarctica
Sample: 2
_database_code_amcsd 0006137
12.4595 11.5955 12.7504 90 90 90 Pbca
atom       x       y      z  occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Na         0     -.5     .5 .463  4.0   .041   .065   .047  -.018   .000   .033
Ca    .23841  .00148 .37498      1.17  .0176  .0158  .0110 -.0009  .0019 -.0018
Fe2+1 .15147 -.23132 .20756 .232  .96  .0124  .0166  .0075 -.0004  .0008 -.0017
Fe3+1 .15147 -.23132 .20756 .084  .96  .0124  .0166  .0075 -.0004  .0008 -.0017
Mg1   .15147 -.23132 .20756 .684  .96  .0124  .0166  .0075 -.0004  .0008 -.0017
Fe3+2 .16801  .22717 .54175 .684  .70  .0094  .0110  .0061 -.0001 -.0004  .0002
Mg2   .16801  .22717 .54175 .316  .70  .0094  .0110  .0061 -.0001 -.0004  .0002
Fe2+3 .01814 -.46041 .27722 .657 2.46  .0374  .0149  .0412  .0055 -.0271 -.0045
Mg3   .01814 -.46041 .27722 .343 2.46  .0374  .0149  .0412  .0055 -.0271 -.0045
P1    .10935  .22866 .79975       .84  .0117  .0121  .0082  .0004 -.0005 -.0010
P2    .40130  .24099 .44377       .88  .0118  .0137  .0079 -.0016  .0016  .0000
P3    .26527 -.02302  .6246       .91  .0142  .0121  .0084  .0007 -.0012  .0004
O1     .0030   .2872  .7725      1.07   .012   .018   .011   .003  -.001  -.002
O2     .0908   .1050  .8353      1.16   .017   .014   .013  -.001  -.002   .004
O3     .1812   .2250  .7016      1.03   .012   .020   .007   .003   .000  -.001
O4     .1655   .3000  .8848       .92   .013   .016   .006   .001   .000  -.002
O5     .3356   .2421  .5456       .90   .014   .014   .007   .000   .003   .000
O6     .1525  -.1832  .3613       .98   .013   .016   .008   .001   .001   .003
O7     .4087   .1158  .4060      1.27   .019   .014   .016  -.001   .004  -.002
O8     .0122   .2062  .5333      1.07   .013   .017   .010   .003   .000   .001
O9     .1906  -.4174  .2038      1.18   .018   .015   .012   .000   .003  -.001
O10    .1491  -.0415  .1891      1.16   .018   .016   .010  -.002   .004   .004
O11    .1984   .0557  .5523       .97   .015   .014   .008   .000  -.002   .000
O12    .1745   .3960  .5494      1.22   .021   .013   .012   .000  -.005  -.001
Ow     .0268   .0091  .3788      1.77   .024   .017   .026   .006   .005  -.001
H1      .007    .056   .414       1.4
H2     -.001   -.064   .394      12.4