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Mineralogical and geochemical features of zoning of residual soils at Eastern Lipovenki area (Middle Pobuzhya of Ukrainian shield)

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Category: Geological sciences

Last Updated on Sunday, 14 July 2013 15:22

Published on Wednesday, 14 November 2012 10:29

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Authors:

Ye.S. Perkov, State Higher Educational Institution “National Mining University”, postgraduate student of the Department of Geology and Deposit Exploration, Research Fellow of the Analytical-Technological Research Centre, Dnepropetrovsk, Ukraine

S.Ye. Popovchenko, Cand. Sci. (Geol.-Min.), State Higher Educational Institution “National Mining University”, Senior Research Fellow, Head of the Analytical-Technological Research Centre, Dnepropetrovsk, Ukraine

Abstract:

Purpose. To show the variation of the mineralogical and chemical composition distribution of Cr, Ni, Ti, W mineralization in ultrabasic residual soils of the region of Middle Pobuzhye.

Methodology. New data of Cr, Ti and W spread in the chromium-bearing residual soils of the Eastern Lipovenki area is based on a combination of field observations, mineralogical, petrographic and laboratory analysis.

Findings. The variation of the mineralogical and chemical composition of useful components in lateritic residual soils of the Eastern Lipovenki area was evaluated. Mineral and chemical composition of nickel-bearing strata of the Eastern Lipovenki is similar with other massifs of Kapitanivska zone, with predomination of the middle ochrous zone of residual soil.
Cr and Ti anomalies are widespread in nontronit residual soils and they transcend the bearing strata. The main concentration of Cr and Ti naturally consists in the upper horizons of the soil to the depth of 5–10 m, and less in the peripheral parts of the massif. Ore deposits of Cr, Ni and Ti are characterized by co-occurrence of nappe-like form beds with characteristic and uncharacteristic correlation between Cr, Ni, Ti, W, Mn and other elements.

Originality. Small negative forms of micro landscape both within the serpentinite massif are favorable to accumulation of heavy mineral fraction. The maximum Ni concentrations up to 3% are common for linear fault-pits and longitudinal parts of the chromite bodies, where infiltration processes are usual. Specified anomalies of W in Cr and Ti area are attached to the marginal zones of skarnoid rocks. Co-location of supergene Ni and exogenous Cr with a significant amount of Ti provides an opportunity to specify them into a uniform deposit occurrence of the ore-bearing residual soil. Development of search characteristic for exogenic Cr mineralization is possible on the base of the represented results.

Practical value. At least two separate deposits of chromite ore with Cr2O3 content from 18% to 22% were prospected. Selected W-bearing areas are worth of further study to explore native mineralization.

References:

1. Металлические и неметаллические полезные ископаемые Украины. Т. 1. Металлические полезные ископаемые / [Гурский Д.С., Есепчук К.Е. и др.] – К.: Центр Европы – 2005. – 785 с.

Gurskiy, D.S. and Yesepchuk K.Ye. (2005), Metallicheskie i nemetallicheskie poleznye iskopaemye Ukrainy. Tom 1. Metallicheskie poleznye iskopaemye [Mineral Deposit of Ukraine. Vol. 1. Metalliferous Mineral Deposits], “Tsentr Yevropy” Publishing house, Kyiv, Ukraine.

2. Перков Е.С. Морфологические особенности хромитовой минерализации в корах выветривания ультрабазитов Среднего Побужья / Перков Е.С., Поповченко С.Е. // Науковий вісник НГУ. – Днепропетровск, 2010. – № 9–10. – С. 9–14.

Perkov, Ye.S. and Popovchenko, S.Ye. (2010), “Morphological features of chromites mineralization in the residual soils of ultrabasite at Middle Pobuzhye”, Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu, no. 9–10, pp. 9–14.

3. Поповченко С.Е. Новый тип карбонатитов. / Поповченко С.Е., Воеводин В.Н., Шукайло Л.Г. // Отечественная геология. – 2005. – №1. – С. 60–63.

Popovchenko, S.Ye., Voyevodin, V.N. and Shukaylo, L.G. (2005), “A new type of carbonatite”, Otechestvennaya geologiya, no.1, pp. 60–63.

4. Поповченко С.Е. Эндогенные карбонатно-силикатные породы (карбонатиты), их генезис и номенклатура. / Поповченко С.Е., Воеводин В.Н., Шукайло Л.Г. // Отечественная геология. – 2006. – №6. – С. 104–106.

Popovchenko, S.Ye., Voyevodin, V.N. and Shukaylo, L.G. (2006), “Endogenous carbonate-silicate rocks (carbonatites) their genesis and range”, Otechestvennaya geologiya, no.6. pp. 104–106.

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