High-temperature transformation of polymineral complex structures

The combination of various microcrystalline structures of natural polymineral complexes determines the main trends in their practical application. For example, the extraction of rare and trace chemical elements isomorphically incorporated into crystalline cells involves mechanical and thermal means of modifying and destroying durable aluminosilicate structures. The qualitative and quantitative composition of impurity elements, phase transformations and fine structure were established using diffractometry, differential thermal and spectral analyses. The presence of paramagnetic impurity ions Fe$^{3+}$, Cu$^{2+}$ and Mn$^{2+}$ allows them to be used as spin probes for recording the processes of modification and destruction of crystal cells using ESR spectroscopy.