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Vol. 5 (2002 year), No. 1

Karzhavin V.K. and Voloshina Z.M.
Thermodynamic analysis of equilibrium processes in complex natural systems

The paper is devoted to the research of possibilities of application of the thermobarometric parameters' calculation method for the natural metamorphic processes. Several examples illustrate that convergence of all equilibria in a single point P-T of the region properly correlates with the chemical indications of equilibrium. This technique makes it possible to find out the state of equilibrium between minerals in samples of the investigated system.

(in Russian, стр.4, fig. 2, tables. 0, ref 3, MS Word 95, MS Word 95 49 Kb)

Vol. 7 (2004 year), No. 1

Voloshina Z.M., Karzhavin V.K., Petrov V.P.
Metamorphism conditions and evaluation of fluid mode of the Pansky massive ore-bearing horizon in connection with the PGE mineralization

The paper contains detailed petrogenetic and microsonde mineralogical research of structure of silicate and sulfide mineral phases of the Pansky massive ore-bearing horizon. Mineral paragenesis and typomorphic peculiarities of minerals, crystallization consecution and thermobarometric conditions of formation in the ore-bearing horizon and ore-free rocks have been researched. It has been established that during metamorphism processes the simultaneous change of the rock mineral structure and its fluid component has been taken place. This process carries the unidirectional and consecutive character and is well reproduced by physical and chemical models. These results will help to estimate the role and influence of the Р -Рў parameters and fluid mode on component structure of firm phases and flying components during transformation and localization of platinum metal mineralization.

(in Russian, стр.5, fig. 2, tables. 0, ref 6, MS Word 95, MS Word 95 161 Kb)