SELFORGANIZATION OF MINERAL DEPOSITION AND TRANSFORMATION (THERMODYNAMIC APPROACH)

摘要

The possibility of selforganization in the system crystal-solution and crystal-crystal was analized in thermodynamic terms. The formation of minerals due to chemical reactions from the solution includes some intermediate stages and corresponding metastable phases. This mechanism corresponds to the one with the lowest or near the lowest value of entropy production and energy supply. It corresponds to the Ostwald consequence as well. So the choice of this way by the system means that selforganization occurs within the region of stability of the thermodynamic branch During the growth of the crystal in supersaturated Solution conditions can arise where thermodynamic branch. During the growth of the crystal in supersaturated solution conditions can arise where thermodynamic branch becomes unstable and oscillations of growth rate occur. Isomorphic admixtures are the trigger for the oscillations. Solid phase processes of ordering-disordering and of spinodal dissolution cause the stable spatial patterns that are treated as dissipative structures.