Dye of the clays from Gzhel' deposite

Using the method of M?ssbauer spectroscopy, a change in the color of clay minerals from the main chromophore - iron, its valence, coordination number, closest environment and the nature of the distortion of the coordination polyhedron - was established. The color of the clay of the Gzhel deposit depends on the set of phases of various colors present in them and their quantitative content. Tab. 6, ill. 3, bibliography: 6 titles.