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Pyroxene chemical composition peculiarities from Kropyvnianske deposit of phosphorus-titanium ores (Ukraine)

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Category: Geology

Last Updated on 04 February 2016

Published on 04 February 2016

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Authors:

V.M. Kharytonov, Cand. Sci. (Geol.), Associate Professor, State Higher Educational Institution “Kryvyi Rih National University”, Senior Lecturer of the Department of Geology and Applied Mineralogy, Kryvyi Rih, Ukraine.

O.V. Lypko, State Higher Educational Institution “Kryvyi Rih National University”, post-graduate student, Kryvyi Rih, Ukraine.

Abstract:

Purpose. To establish the regularities of distribution of main and admixture components in the individuals of pyroxene ore as well as detection of typomorphic indications of the chemical activity of samples of this group of minerals from phosphorus-titanium ores from Kropyvnianske deposit.

Methodology. The research employs the microprobe analysis using “РЕММА 102-02”; calculation of full crystal-chemical formulas and minal-composition by oxygenic methodic, comparative analysis of chemical composition of pyroxenes from the Kropyvnianske deposit with samples from other titanium deposits located in Ukraine and other regions of the world.

Findings. The gabbroids with high concentration of apatite from anortosire-rapakivigratite plutons of the Ukrainian Shield belong to subalkaline series; clinopyroxene from basites with high-level of phosphorus are often represented by Ti-augite or ferrosilite. Pyroxenes of Kropyvnianske deposit are characterized by low content of Si and Mg, and high content of Ti, Al, Fe, Mn, Ca, Na compared to other deposits located in Ukraine and other regions of the world. The pyroxenes from Kropyvnianske deposit by the peculiarities of chemical composition are located in the field of high-calcium augite in Н.І. Hess’s diagram. During the investigation of pyroxenes from Kropyvnianske deposit, we found that quantity of Si, Fe, Mn, Na and V in the grains increases from periphery to the center. In the central part of individuals, the amount of calcium decreases compared to the periphery. The distribution of Ti, Al, Mg and Sc content has no clear regularity within the individual grains.

Originality. The difference between chemical content of pyroxene grains from Kropyvnianske deposit and minerals of the same group from other titanium deposits was determined. It was established the regularity of chemical elements distribution within some pyroxene individuals of Kropyvnianske deposit in the direction from the periphery to the central parts.

Practical value. The peculiarities of chemical composition of pyroxenes of Kropyvnianske deposit can be used as the criteria for prospecting the phosphor-titanium raw material within the areas similar to Kropyvnianske deposit by geological structure. They can also be used to determine the kind of mineralization (apatite-ilmenite or ilmenite-ulvit-titanomagnetite with apatite). Thus, the chemical composition of pyroxenes from Stremigorodske and Nosachevse deposits (apatite-ilmenite ore) differs essentially from pyroxenes from Kropivnyanske deposit (ilmenite- ulvit-titanomagnetite ore with apatite) as they contain Si, Mg, Al, Fe and Ca. It is important to take into account the information on pyroxene chemistry when preparing recommendations for use of P-Ti ores concentrate because it accumulates significant amounts of olivine, pyroxene and olivine-plagioclase-pyroxene products after the extraction of titanomagnetite, ilmenite and apatite concentrates. The extraction of scandium and vanadium is one of the possible ways of its utilization. The level of scandium of Kropyvnianske deposite pyroxsenes (8,300 g/t in average) is almost 1,400 times higher than scandium percentage abundance. The level of vanadium in them (5,300 g/t) is 60 times higher than vanadium percentage abundance. Minimal values of content of these metals suitable for commercial use are 100 and 1000 g/t, respectively.

References:

1. Кривдік С.Г. Деякі мінералогічні та петрологічні особливості рудоносних (фосфор, титан) габроїдів анортозит-рапаківігранітних плутонів Українського щита / С.Г.Кривдік, О.В.Дубина, Т.В.Гуравський // Мінералогічний журнал. – 2008. – №4 (30). – С. – 41−57.

Kryvdik, S.G., Dubyna, O.V. and Guravsky, T.V. (2008), “Some Mineralogical and Petrological Peculiarities of Ore-Bearing (Phosphorus, Titanium) Gabbroids in Anorthosite-Rapakivi-Granite Plutons from the Ukrainian Shield”, Mineralohichnyi Zhurnal, no. 4 (30), pp. 41−57.

2. Зима С.Н. Минералого-петрографические особенности апатит-ильменит-титаномагнетитовой руды Крапивенского месторождения / С.Н.Зима // Новое в технологии и технике переработки минерального сырья. Сборник научных трудов НИИ «Механобрчермет».– Кривой Рог: изд-во «Механобрчермет». – 2007. – С.40−52.

Zima, S.N. (2007), “Mineralogic petrographic peculiarities of apatite-ilmenite-titanomagnetite ore in Krаpivenskoe deposit”, The New in Technology and Technics of Processing Mineral Raw Materials. Collection of scientific works of the Research Institute “Mehanobrchermet”, pp. 40−52.

3. Піскун О.В. Типоморфізм хімічного складу силікатів Коростенського плутону / О.В. Піскун, В.М. Харитонов // Мінералогічний збірник. – 2012. – № 62. С. 230–233.

Piskun, O.V. and Kharytonov, V.M. (2012), “Typomorphism of chemical composition of Korostenskyi pluton silicates”, Mineralogical Review, no. 62, pp. 230–233.

4. Шумлянський Л.В. Варіації хімічного складу силікатних мінералів та апатиту Федорівського апатит-ільме-нітового родовища (Коростенський плутон) / Л.В. Шумлянський // Мінералогічний журнал. – 2007. – № 1 (29). – С. 5−22.

Shumlyanskyy, L.V. (2007), “Variations of Chemical Composition of Silicate Minerals and Apatite of Fedorivka Apatite-Ilmenite Deposit, Korosten Pluton”, Mineralohichnyi Zhurnal, V. 29, no. 1, pp. 5−22.

5. Кривдік С.Г. Хімізм піроксенів з рудоносних основних та ультраосновних порід українського щита / С.Г.Кривдік, Т.В.Гуравський, О.В.Дубина // Геологічний журнал. – 2009. – № 3. – С. 51−59.

Kryvdik, S.G., Guravsky, T.V. and Dubyna, O.V. (2009), “Chemistry of ore-bearing pyroxene mafic and ultramafic rocks from the Ukrainan Shield”, Heolohichnyi Zhurnal, no.3, pp. 51−59.

6. Царовский И.Д. Эволюция минерального состава габброидов и сиенитов Южно-Кальчикского массива (При-азовье) / И.Д.Царовский, Г.Л.Кравченко // Геологічний журнал. – 1992. – № 2. – С. 15−26.

Tsarovsky, I.D. and Kravchenko, G.L. (1992), “The evolution of the mineral composition of gabbro and syenite South Kalchikskogo array (Sea of Azov)”, Heolohichnyi Zhurnal, no. 2, pp. 15−26.

7. Charlier, B. (2007), Petrogenesis of Magmatic Iron-Titanium Deposits Associated with Proterozoic Massif-Type Anorthosites, Univ. de Liege, Belgium.

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