Creedite
Giuseppetti G, Tadini C
Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 69-78
Structural analysis and refinement of Bolivian creedite, Ca3Al2F8(OH)2(SO4)*2(H2O):
The role of the hydrogen atoms
Locality: Tin mines of the Catavi (Llallagua) zone, Bolivia
_database_code_amcsd 0014772
13.936 8.606 9.985 90 94.39 90 C2/c
atom     x     y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Ca1  .2472 .2182 .1927  .67  .0011  .0020  .0014 -.0002  .0002 -.0001
Ca2      0 .0269   .25  .78  .0007  .0026  .0026      0  .0002      0
Al   .2983 .3997 .4876  .54  .0009  .0015  .0013 -.0002  .0001  .0000
F1   .1407 .1185 .3468  .94  .0012  .0040  .0018 -.0005 -.0002  .0002
F2   .4089 .4540 .4252 1.23  .0015  .0041  .0036 -.0009  .0012 -.0003
F3   .2650 .4016 .0239  .91  .0018  .0018  .0020 -.0002  .0002  .0003
F4   .2361 .4404 .3213  .97  .0019  .0025  .0016  .0001 -.0002  .0000
Oh   .3082 .1899 .4379  .67  .0007  .0019  .0025  .0002  .0005  .0000
H     .355  .154  .434  1.4
S        0 .6573   .25  .73  .0008  .0021  .0025      0  .0003      0
O1   .4216 .2610 .1926 1.05  .0010  .0034  .0034  .0003 -.0001  .0004
O2   .4666 .0607 .3578 1.41  .0018  .0038  .0046  .0003  .0014  .0016
Ow   .0716 .2579 .1167 1.28  .0022  .0032  .0030  .0006 -.0001  .0001
Hw1   .064  .246  .038  3.3
Hw2   .054  .349  .128  3.1