Abstract
New information is given on cell parameters, density and methods of preparation of 50 compounds of the langbeinite and Tutton salt groups. The langbeinites have the general formula (A(+))(2)(B(2+))(2)(XO(4))(3) and the Tutton salts the general formula (A(+))(2)(B(2+))(XO(4))(2) · 6H(2)O, where A is K, Rb, (NH(4)), Tl or Cs; B is Mg, Ni, Cu, Co, or Zn; and X is S or Cr. A comprehensive list of references on the crystallography of the compounds is included.