Microstructural analysis for predicting the morphology and spatial arrangement of chromite bodies

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Abstract


Shortage of chromite raw materials in Russia at present time encouraged the use of methods, which have not been previously used in exploration and prediction of ore bodies. Chromite deposits of the Urals are characterized by a very complex structure. For prediction of the declination of ore bodies it is possible to use the observed relationship between the structural elements of ultrabasites and the preferential orientation of the axes of the optical indicatrix of olivine. In the majority of cases the Ngaxis of the indicatrix are parallel statistically to the linearity of chromespinelide. An important structural element is the linearity, which is presented by subparallel chains of isometric grains of chromespinelide or elongated grains of chromespinelide oriented in the same direction. The results of microstructural analysis of the enclosing rocks and measurements of the preferential orientation axes of the optical indicatrix of olivine on Yujnopogureyskoe deposit has allowed to predict the decline of the ore bodies. Information about the spatial position and morphology of the ore bodies allows effective planning of the exploration work.


About the authors

Vladimir E Markov

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: vemarkov@yandex.ru
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

senior lecturer at Department of Geology, Mining and Oil&Gas Engineering, Engineering Academy, Peoples’ Friendship University of Russia (RUDN University). Scientific interests: mathematical modeling of geological problems, innovative methods of remote sensing, computer technology, GIS technology, structural criteria for the localization of chromite deposits

Nikolay P Vasiliev

Peoples’ Friendship University of Russia (RUDN University)

Email: rukolya@gmail.com
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

specialist graduate of the Department of Geology, Mining and Oil&Gas Engineering, Engineering Academy, Peoples’ Friendship University of Russia (RUDN University). Scientific interests: lithogeochemical exploration of mineral deposits, mathematical modeling of geological problems, structural criteria for the localization of chromite deposits

Ksenia V Karepina

Central Research Institute of Geological Prospecting for Baze and Precious Metals

Email: ksusha55-89@mail.ru
129, Varshavskoe sh., Bld. 1, Moscow, 117545, Russian Federation

scientific researcher of the Central Research Institute of Geological Prospecting for Baze and Precious Metals. Scientific interests: geo-information technologies in geology, prospecting for base and precious metals, microstructural analysis

Elena V Karelina

Peoples’ Friendship University of Russia (RUDN University)

Email: elkarelina@mail.ru
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

assistant professor at the Department of Geology, Mining and Oil&Gas Engineering, Engineering Academy, Peoples’ Friendship University of Russia (RUDN University). Scientific interests: prospecting and exploration of mineral deposits, mathematical modeling of geological problems, deposits of precious, ferrous and non-ferrous metals

References

  1. Markov V.E., Karelina E.V., McGarrell Denbre Shemroy. Structural position of chromite mineralization at the deposit Central (Polar Urals). RUDN Journal of Engineering Researches. 2016. No. 3. P. 41—52 (in Russ.).
  2. Saveliev D.E. The relationship between ore-bering dunite assotiation and peridotites in ophiolites (on an example of Kraka massifs, Soutern Ural). Lithosphere. 2013. No. 2. P. 76—91. (in Russ.).
  3. Scherbakov S.A. Plasticheskie deformacii ul’trabazitov ofiolitovoj associacii Urala [Plastic deformations of ultrabasites of the Urals ophiolitic assemblage]. Moscow: Science publ., 1990. 119 p. (in Russ.).
  4. Nicolas A., Poirier J.P. Crystalline plasticity and solid state flow in metamorphic rocks // New York: Wiley-Interscience, 1976. 444 p.

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Copyright (c) 2018 Markov V.E., Vasiliev N.P., Karepina K.V., Karelina E.V.

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