Вестник Кольского научного центра РАН. 2013, №1.

Yu.A. Balashov, T.B. Bayanova REDOX PARAMETERS OF DIFFERENT AGE FORMATIONS OF THE BALTIC SHIELD On the territory of the Baltic Shield, intrusive, volcanic and metamorphic rock complexes of different ages and types are located. Up till now, there are no systematic data on variations in oxygen fugacity for these rocks although such information is one of the most important factors of geochemical and petrological analyses for deciphering the generation conditions of individual massifs and associated types of ore-bearing. The paper presents an attempt to generalize the redox parameters of formation and transformation of ore- bearing systems of the Kola Peninsula and other regions as well as comparing them to modern knowledge regarding the oxygen fugacity in variable-age mantle and crustal complexes in other regions of the Baltic Shield. Keywords: lithosphere, rocks of Earth's crust and mantle, rare earth elements, fugacity o f oxygen. V.K. Kardzavin INFLUENCE OF KYANITE CARBON CONCENTRATION ON FORMATION OF DIAMONDS Results of physicochemical modeling of formation process for graphite and diamond are introduced for a wide range of temperature and pressure within the area of kyanite existence. The research uses data of chemical analysis for kianite with different carbon content. It was determined that diamonds formation is possible for definite values of T, P and carbon concentration. Some specific changes in composition of solid phase were revealed at presence of reducing conditions with a fluid containing minor concentrations of C02, CH4, H2S, etc. We demonstrate the possibility to crystallize and exist for both polymorphic modifications of carbon into the Ky-Sil-And system and metastable area of diamond with graphite. This allows to state that combined crystallization of diamond and graphite in a silica-alumina system testifies upon comparatively low temperature conditions of their formation (temperature below 1000°C). Keywords: carbon, diamond, physicochemical modeling, kyanite, P-T diagram, thermodynamical parameters, composition, solid phase, fluid phase. A.A. Kozyrev, MM . Kagan, K.N. Konstantinov, LG. Panasenko MONITORING OF STRESSES AND DEFORMATIONS IN ROCK MASS BLOCK STRUCTURES BY MEANS OF DEFORMATIONS MEASUREMENTS IN GEODYNAMIC SITE OF KIROVSKY MINE OF "APATITE" STOCK COMPANY Tectonics of the Kukisvumchorr and Ukspor apatite-nepheline deposits, United Kirovsky mine, has been described. Relevance of using highly sensitive and time stable monitoring systems under high stressed rock mass conditions has been justified. A geodynamic testing site with an underground data recording station located in a level of -24 m, Ukspor side of UKM and a surface data collection, storage and treatment station have been presented. Information has been given on instrumental-and-methodical base and procedure of geophysical information exchange between geodynamical testing site and surface station for data collection and processing. The results have been shown on deformations and rock mass slopes recording on the underground mine field during a long term period including different stages of mining- induced earthquake' preparation and realization. Keywords: monitoring, slope, deformation, tectonics, earthquake, precursor, undergrou V.M. Busyrev, O.E. Churkin EVALUATION OF EFFICIENCY OF PROSPECTIVE DEPOSITS DEVELOPMENT IN COMPLIANCE WITH THE OWNER AND SUBSOIL USER’ INTERESTS The article reports the state and degree of the mineral resources using in the Murmansk region. It states the methods to determine the subsoil minerals value and evaluate efficiency of new deposits development. Design decisions are proposed in compliance with balance of economic relations between the state and subsoil users, which contribute to the efficient use of the regional mineral-resources base. Keywords: mineral resources, value, valuation methods, balance of interests. V.M. Busyrev VALUE OF MINERAL RESOURCES IN THE DEPOSITS AND ITS CHARACTERISTICS The analysis of mineral reserves use and recovery was carried out. The issue of rational development of deposits will be worsening in future. The paper proposes a method of its solution on the objective economic basis taking into account value of consumed reserves. The method of valuation was given depending on mining-geological and mining-technical conditions of deposits development. Keywords: mineral resources, reserves, use, recovery, value, method of valuation, influencing factors. 100