Fluoro-pargasite
Oberti R, Sardone N, Hawthorne F C, Raudsepp M, Turnock A C
The Canadian Mineralogist 33 (1995) 25-31
Synthesis and crystal-structure refinement of synthetic fluor-pargasite
Sample: FP1  [note: ideal = NaCa2(Mg4Al)(Si6Al2)O22(OH)2]
Locality: Synthetic
_database_code_amcsd 0005425
9.820 17.896 5.294 90 105.30 90 C2/m
atom       x     y     z  occ Biso
SiT1   .2821 .0854 .3043 .525  .44
AlT1   .2821 .0854 .3043 .475  .44
SiT2   .2913 .1733 .8147 .978  .48
AlT2   .2913 .1733 .8147 .022  .48
MgM1       0 .0894    .5       .51
AlM2       0 .1754     0 .387  .50
MgM2       0 .1754     0 .613  .50
MgM3       0     0     0       .47
CaM4       0 .2794    .5  .48  .74
MgM4       0 .2794    .5  .02  .74
CaM4'      0 .2536    .5  .48  .89
MgM4'      0 .2536    .5  .02  .89
NaA        0    .5     0  .17 4.04
CaA        0    .5     0  .04 4.04
NaA(m) .0401    .5 .0944  .17 2.85
CaA(m) .0401    .5 .0944  .04 2.85
NaA(2)     0 .4713     0  .17 2.00
CaA(2)     0 .4713     0  .04 2.00
O1     .1069 .0871 .2167       .71
O2     .1185 .1722 .7357       .69
F3     .1044     0 .7123       .77
O4     .3670 .2517 .7898       .89
O5     .3527 .1406 .1146       .95
O6     .3460 .1167 .6112       .98
O7     .3446     0 .2771      1.01