Sarcolite
Giuseppetti G, Mazzi F, Tadini C
Tschermaks Mineralogische und Petrographische Mitteilungen 24 (1977) 1-21
The crystal structure of sarcolite
Locality: Vesuvius volcano, Bay of Naples, Italy
_database_code_amcsd 0015662
12.343 12.343 15.463 90 90 90 I4/m
atom     x     y     z  occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na1      0     0 .2821      1.30 -.0009 -.0009  .0041      0      0      0
Na2      0    .5   .25  .76 8.44  .0014  .0014  .0248      0      0      0
Ca1  .2696 .4008     0      1.06  .0019  .0021  .0007  .0000      0      0
Ca2  .0763 .2084 .1349       .96  .0017  .0013  .0011  .0000 -.0003  .0000
Al   .3755 .1879 .1423      1.12  .0006  .0011  .0024  .0001  .0001 -.0010
Si1  .3710 .0102     0       .58  .0012  .0010  .0004  .0004      0      0
Si2  .2446 .3901 .2017       .56  .0010  .0007  .0007  .0000  .0001 -.0001
O1       0    .5     0      4.08  .0119  .0015  .0043 -.0031      0      0
O2   .1040 .3081     0      1.79  .0010  .0058  .0013  .0002      0      0
O3   .3353 .0715 .0873      1.14  .0024  .0020  .0008 -.0005  .0005 -.0005
O4   .2222 .4885 .1341      1.29  .0033  .0009  .0014  .0007  .0001  .0000
O5   .2782 .2913 .1361      1.18  .0023  .0012  .0015  .0004 -.0002 -.0003
O6   .1651 .0800 .2270       .96  .0013  .0014  .0013  .0000 -.0001 -.0001
O7   .1303 .3509 .2444      1.16  .0015  .0019  .0015 -.0005  .0000  .0000
O8   .3946 .2508     0  .72 2.78  .0013  .0028  .0060  .0007      0      0
O9    .038  .118     0 .125  1.5
O10   .100 -.074     0 .125  1.5
O11  -.069 -.022  .080 .125  1.5
O12   .093  .045  .058  .25  1.5
O13     .5  .555  .071 .115  1.5
O14   .539  .539  .071 .115  1.5
O15   .462  .405     0  .23  1.5
Si3      0     0     0   .5  .56  .0010  .0010  .0005      0      0      0
P3       0     0     0   .5  .56  .0010  .0010  .0005      0      0      0
C     .513  .495     0  .23  1.5
Cl      .5    .5     0  .08  1.5