Wendwilsonite
Kolitsch U, Fleck M
European Journal of Mineralogy 18 (2006) 471-482
Third update on compounds with krohnkite-type chains: the crystal structure of
wendwilsonite [Ca2Mg(AsO4)2*2H2O] and the new triclinic structure types of
synthetic AgSc(CrO4)2*2H2O and M2Cu(Cr2O7)2*2H2O (M = Rb, Cs)
Locality: Schneeberg, Saxony, Germany
_database_code_amcsd 0007158
5.806 12.923 5.628 90 107.49 90 P2_1/c
atom       x       y      z occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2) U(1,3)  U(2,3)
Ca    .56210  .12187 .23138     .00840 .00729 .00893 .00946 -.00100 .00323 -.00153
Mg         0       0      0  .9  .0078  .0067  .0087  .0077  -.0007  .0018  -.0023
Co         0       0      0  .1  .0078  .0067  .0087  .0077  -.0007  .0018  -.0023
As    .21621 .120488 .56738     .00535 .00518 .00578 .00476  .00004 .00103  .00012
O1   -.05699  .17409  .4976      .0103  .0070  .0104  .0121   .0030  .0008   .0001
O2    .27852  .05378 .83963      .0085  .0088  .0095  .0066   .0000  .0017   .0027
O3    .23638  .03655  .3426      .0100  .0103  .0111  .0090  -.0014  .0035  -.0042
O4    .43917  .20566  .5747      .0100  .0098  .0092  .0118  -.0041  .0043  -.0015
Ow5    .8177  .13770  .9649      .0089  .0110  .0077  .0069  -.0014  .0013   .0003
H1      .881    .192   .982       .022
H2      .745    .142   .838       .026