Institute of Geology of the Karelian Research Center of the Russian Academy of Sciences (Petrozavodsk, Russia):

Nikiforov A. G., Junior Researcher, eoaster@yandex.ru
Bubnova T. P., Researcher, bubnova@krc.karelia.ru

The practice of process mapping of acid metasomatites consisting of quartz and muscovite in the structures of Eastern Hizovaara (Republic of Karelia) is considered. These muscovite ores were formed under the conditions of polychronic metamorphism and metasomatism and are confined to the metasomatic zonality. The so-called metasomatic columns are used to visualize the metasomatic zonality. These are combinations of simultaneously formed zones of different mineral composition, represented by thin bodies within the ore lenses of the deposit. The highest muscovite occurrence is observed in the metasomatites developed along biotite gneisses. Various principles may be used, depending on the goals and objectives of the process mapping of metasomatic rocks. In estimation mapping at the scale of 1 : 10000 to 1 : 50000, the major amounts of data on the ore body are obtained when studying the formation type and the petrographic and petrochemical composition of metasomatites. In the process of identification of industrial types and grades of ores, the specific metasomatic and chemical zonality features of respective rocks must always be taken into account. Application of the facies analysis methods for this purpose enables identification of metasomatic bodies and zones that combine the facies of certain thermobarometric conditions and are characterized by a set of mineral parageneses. This approach is most practical for the selection of industrial types and grades of ores and may be used for all types of metasomatic changes of rocks.

1. Levchenko E. N. Mineral associations of rare-metaltitanium sand from the Tsentralnoe deposit and the spatial variability of the properties of ore minerals. Collection of scientific articles on the materials of the VI Russian seminar «Minerals technological properties evaluation methods and their behavior in technological processes». Petrozavodsk: Karelian Scientific Center of RAS, 2012. pp. 78–92.
2. Izoitko V. M. Technological mineralogy and ore evaluation. St. Petersburg: Nauka, 1997. 581 p.
3. Petrov S. V., Mishulovich P. М., Smolensky V. V. The principles of building a block geological-and-processing model of mineral deposit. Obogashchenie Rud. 2010. No. 6. pp. 34–38.
4. Syrtlanov V. R., Denisova N. I., Khismatullina F. S. Some aspects of geological and hydrodynamic modeling of large deposits for design and development monitoring. Neftyanoye Khozyaystvo. 2007. No. 5. pp. 70–74.
5. Khisamov R. S., Nasybullin A. V. Modeling of oil field development. Moscow: VNIIOENG, 2008. 255 p.
6. Ibatullin R. R., Bakirov I. M., Nasybullin A. V., Antonov O. G., Rakhmanov A. R. Development and application of permanently updated geological and reservoir model for the third block of the Berezovskaya area. Neftyanoye Khozyaystvo. 2012. No. 2. pp. 54–56.
7. Regulations on the creation of permanent geological and technological models of oil and gas fields: RD 153-39.0-047-00: approved and put into operation by the Ministry of fuel and energy of Russia 10.03.2000. Moscow, 2000. 130 p.
8. Dominy S. С., O'Connor L. О. Geometallurgy — beyond conception. Proc. of the 3^rd Intern. geometallurgy conference, Australasian Institute of Mining and Metallurgy. 2016. Vol. 3. pp. 3–10.
9. Dobby G., Bennett C., Kosick G. Advances in SAG circuit design and simulation applied to the mine block model. Proc. of the Intern. conference on autogenous and semiautogenous grinding technology. British Columbia, Vancouver, 2001. Vol. 4. pp. 244–263.
10. Baumgartner R., Dusci M., Trueman A., Brittan M., Poos S. Building a geometallurgical model for the Canahuire epithermal Au-Cu-Ag deposit, Southern Peru — past, present and future. Proc. of the 2^d AusIMM intern. geometallurgy conference. 2013. pp. 51–57.
11. Ehrig K., McPhie J., Kamenetsky V. S. Geology and mineralogical zonation of the Olympic Dam iron oxide Cu-UAu-Ag deposit, South Australia. Geology and genesis of major copper deposits and districts of the world: a tribute to Richard H. Sillitoe. Littleton (CO, USA): SEG, 2012. Vol. 16. pp. 237–268.
12. Glass H. J. Geometallurgy: driving innovation in the mine value chain. Proc. of the 3^rd AusIMM intern. geometallurgy conference. 2016. pp. 21–28.
13. Silva C. M., Sørensen B. E., Aasly K., Ellefmo S. L. Geometallurgical аpproach to the еlement-to-mineral сonversion for the Nabbaren nepheline syenite deposit. Minerals. 2018. Vol. 8, Iss. 8. pp. 1–20. DOI: 10.3390/min8080325.
14. Abramov S. S., Andreeva O. V., Zharikov V. A., Zarayskiy G. P., Marakushev A. A., Omelyanenko B. I., Pertsev N. N., Podlesskiy K. V., Rass I. T., Rusinov V. L. Metasomatism and metasomatic rocks. Moscow: Nauchnyy Mir, 1998. 492 p.
15. Geological survey of metamorphic and metasomatic complexes. Methodical manual. St. Petersburg: VSEGEI, 1996. 416 p.
16. Goleva R. V. Hydrothermalite as a basic indicator of poorly shown mineralization. Ways for the expansion of mineral reserves and resources of the Centers for Economic Development. Ratsionalnoye Osvoyenie Nedr. 2012. No. 3. pp. 24–37.
17. Kuzvart M. Industrial minerals and rocks in the 21st century. Utilización de rocas y minerales industriales. Seminarios SEM, 4 de julio de 2005, Alicante. Madrid, 2006. Vol. 2. pp. 287–303.
18. Shchiptsov V. V. Technological and mineralogical assessment of Karelian industrial minerals. Materials of the annual meeting of the Russian mineralogical society «Modern methods of mineralogical and geochemical studies as a basis for the identification of new types of ores and technology of their complex development». St. Petersburg, 2006. pp. 80–83.
19. Slabunov A. I. Geology and geodynamics of Archean mobile belts (by the example of the Belomorian province of the Fennoscandian shield). Petrozavodsk: Karelian Scientific Center of RAS, 2008. 296 p.
20. Bushmin S. A., Glebovitsky V. A. Scheme of mineral facies of metamorphic rocks and its application to the Fennoscandian shield with representative sites of orogenic gold mineralization. Trudy Karelskogo Nauchnogo Tsentra Rossiyskoy Akademii Nauk. Seriya Geologiya Dokembriya. 2016. No. 2. pp. 3–27.
21. Glebovitsky V. A., Bushmin S. A. Postmigmatite metasomatosis. Leningrad: Nauka, 1983. 216 p.
22. Proskurin G. Yu. Metasomatites of the junction zone of the Karelian granite-greenstone region and the Belomorian metamorphic belt. Regionalnaya Geologiya i Metallogeniya. 2013. No. 56. pp. 51–57.