TOPOLOGY OF SPIN HAMILTONIAN TENSORS OF Mn*992*99+ AND Fe*993*99+ IONS AND QUADRATIC TENSOR PRODUCTS OF CRYSTALLINE FIELD IN MONOCRYSTALS

The aim is to perform the experimental determination of the spin Hamiltonian parameters of Mn*992*99+ and Fe*993*99+ ions, to compare the logical properties of the obtained spin Hamiltonian tensors with quadratic tensor products of the crystalline field in the substitution positions. To solve these problems the EPR method was used, the basic measurements have been performed on the spectrometer witn working frequency 37 GHz. The spin Hamiltonian parameters for all the studied objects have been determined. It has been shown that the tensors of the second and fourth rank spin Hamiltonian of Mn*992*99+ and Fe*993*99+ ions depend mainly and quadratically upon the fourth rank tensor of the crystalline field, but the invariant sum of the fourth rank tensor of the spin Hamiltonian is the criterion of distinguishing the tetrahedral and octahedral complexes Fe*993*99+ in crystalsAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Dispersed organic matter characteristics as an indicator of rock alteration degree of the Safyanovskoe copper-sulphide deposit

Relevance of the study is due to the importance of composition and maturity of the dispersed organic matter (DOM) as indicators of rock forming conditions, which may contribute to the paleoecological reconstruction of sedimentation conditions for rocks in the ore-bearing stratum of the Safyanovskoe deposit. Objective: to analyze the composition and characteristics of DOM in carbon-siliceous rocks of the ore-bearing stratum of the Safyanovsky copper-pyrite deposit. The obtained characteristics of the DOM make it possible to reveal the source of original accumulation and the level of its transformation under the influence of various geological processes. Conclusions. DOM of carbon-siliceous rocks of the Safyanovsky deposit is genetically the same, its type is mainly sapropelic and accumulation is associated with marine conditions. A characteristic feature is, on the one hand, its high polymerization, which is typical for DOM of the stage of late mesocatagenesis, and, on the other hand, its molecular composition does not allow us to talk about the maturation of DOM in the process of natural regional metamorphism.26-3