Woodallite
Mills S J, Whitfield P S, Kampf A R, Wilson S A, Dipple G M, Raudsepp M, Favreau G
Journal of Geosciences 58 (2012) 273-279
Contribution to the crystallography of hydrotalcites:
the crystal structures of woodallite and takovite
Note: polytype 3R
Note: calculated chemical formula differs from expected
Locality: Mount Keith Nickel Mine, Western Australia, Australia
_database_code_amcsd 0019807
3.10124 3.10124 23.6817 90 90 120 R-3m
atom     x     y       z   occ Biso
Mg1      0     0       0   .75 1.06
Cr       0     0       0  .124 1.06
Al       0     0       0  .039 1.06
Fe       0     0       0  .087 1.06
O1     1/3   2/3 .041590       1.06
H1     1/3   2/3  .08168       1.06
O2   .3378 .3378      .5 .1419  2.0
C1       0     0      .5   .07  2.0
Cl1      0     0      .5   .11  2.0