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ArticleName Types of ores of gold-silver deposits of volcano-plutonic complexes in folded belts and methodological aspects of their isolation
DOI 10.17580/or.2022.01.06
ArticleAuthor Podolyan E. I., Kotova I. K., Shelukhina Yu. S., Borozdin A. P.

LLC «LIMS» (St. Petersburg, Russia):

Podolyan E. I., First Category Geologist, Master of Geology,
Shelukhina Yu. S., Leading Researcher, Candidate of Geological & Mineralogical Sciences,
Borozdin A. P., General Director, Master of Geology,

St. Petersburg University (St. Petersburg, Russia):

Kotova I. K., Associate Professor, Candidate of Geological & Mineralogical Sciences, Associate Professor,


The study covers the ores of the three gold-silver type deposits, namely, Lichkvaz-Tei (Armenia), Nevenrekan and Perevalnoe (Russia). These differ in both geological structure and ore localization conditions. Detailed mineralogical studies of these ores were conducted to establish their natural types. The material composition for the ore types, their structural and textural features, the mineral balance of valuable components, and the grain-size composition of their constituent minerals may be used to predict the processing properties of ores at early exploration stages. Along with the traditional approaches, the method of sample pre-classification by factor analysis based on geochemical associations of ore-forming elements was tested. This enabled the development of an algorithm for identifying certain types in each sample and, consequently, the preparation of composite samples for further mineralogical studies. With due account of the geochemical associations, four ore-geochemical types of ores were identified for the Lichkvaz-Tei deposit based on the statistical analysis. These are the gold-arsenide, gold-copper-base metal, copper-zinc, and gold-silver arsenide-antimonide-sulfide types. For all the objects studied, a general ore-mineral parageneses formation sequence has been established: the early pyrite type is replaced by arsenopyrite-pyrite and chalcopyrite-sphalerite types, then by intermediate gold-chalcopyrite-galena-fahlite silver-bearing and late gold-silver-sulfosaline-fahlite and marcasite types. A wide range of natural types of ores have been established, such as: pyrite-arsenopyrite, gold-arsenopyrite, gold-galena-sphalerite, chalcopyritesphalerite types for the Lichkvaz-Tei deposit; gold-pyrite-sulfosaline and oxidized gold-pyrite types for the Nevenrekan mineral occurrence; silver-fahlite-chalcopyrite-galena-sphalerite type for the Perevalnoe deposit. This diversity is due to the different quantitative ratios of ore-mineral parageneses in the composition of the ores.

keywords Gold-silver ores, polymetallic ores, ore types, natural ore type, paragenetic associations, geometallurgy, gold, mineralogy, statistics

1. Konstantinov M. M., Stefanovich V. V., Zelenov V. I. Mineral raw materials. Silver: reference book. Moscow: Geoinformmark, 1998. 43 p.
2. Konstantinov M. M., Vargunina N. P., Kosovets T. N., Struzhkov S. F., Syngaevsky E. D., Shishakova L. N. Gold and silver deposits. Series: Models of deposits of precious and nonferrous metals. Moscow: TsNIGRI, 2000. 239 p.
3. Struzhkov S. F., Konstantinov M. M. Gold and silver metallogeny in the Okhotsk-Chukotka volcanogenic belt. Moscow: Nauchnyi Mir, 2005. 320 p.
4. Nekrasova A. N., Oreshin V. Yu., Chizhova I. A. Classification of gold and silver deposits based on logical and informational analysis. Rudy i Metally. 1997. No. 5. pp. 33–42.
5. Savva N. E., Kolova E. E., Volkov A. V., Sidorov A. A., Murashov K. Yu. Primorskoe epithermal Ag-Au deposit (northeastern Russia): Geological setting, mineralogy, geochemistry, and ore formation conditions. Geologiya Rudnykh Mestorozhdeniy. 2019. Vol. 61, No. 1. pp. 52–74.
6. Volkov A. V., Murashov K. Yu., Sidorov A. A. Geochemical patterns of epithermal ore formation in the Okhotsk–Chukotka volcanoplutonic belt (northeast Russia). Doklady Akademii Nauk. 2017. Vol. 474, No. 3. pp. 351–355.
7. White N. C., Hedenquist J. W. Epithermal gold deposits styles, characteristics and exploration. SEG Newsletter. 1995. No. 23. pp. 9–13.
8. Podolian E., Shelukhina I., Kotova I. Ag-bearing mineralization of Nevenrekan deposit (Magadan region, Russia). Proc. of the 14th International congress for applied mineralogy (ICAM), 23–27 September 2019, Belgorod, Russia. pp. 127–128.
9. Volkov A. V., Prokof'ev V. Yu., Vinokurov S. F., Andreeva O. V., Kiseleva G. D., Galyamov A. L., Murashov K. Yu., Sidorova N. V. Valunistoye epithermal Au-Ag deposit (East Chukotka, Russia): Geological structure, mineralogicalgeochemical peculiarities and mineralization conditions. Geologiya Rudnykh Mestorozhdeniy. 2020. Vol. 62, No. 2. pp. 107–133.
10. Elmanov A. A., Prokof'ev V. Yu., Volkov A. V., Sidorov A. A., Voskresenskii K. I. First data on formation conditions of the Zhilnoye Au–Ag epithermal gold deposit (Eastern Chukotka, Russia). Doklady Earth Sciences. 2018. Vol. 480. pp. 725–729.
11. Abd El Monsef M. Ore controls and metallogenesis of Au-Ag deposits at Atalla mine, Central Eastern desert of Egypt. Acta Geologica Sinica. 2020. Vol. 94, Iss. 5. pp. 1451–1470.
12. Shahbazi S., Ghaderi M., Alfonso P. Mineralogy, alteration, and sulfur isotope geochemistry of the Zehabad intermediate-sulfidation epithermal deposit, NW Iran. Turkish Journal of Earth Sciences. 2019. Vol. 28. pp. 882–901.
13. Hedenquist J. W., Arribas A. J. R., Gonzalez-Urien E. Exploration for epithermal gold deposits. Reviews in Economic Geology. 2000. Vol. 13. pp. 245–277.
14. Poliquin M. Low-sulphidation epithermal quartzadularia gold-silver veins & the El Fuego project, Mexico. Vancouver, Canada: Almaden Minerals Ltd., 2004. 13 p.
15. Alimov Sh. P., Tsoi V. D., Koroleva I. V. Features of formation and regularities of placement of natural types of ores of the Balpantau deposit, Uzbekistan. Rudy i Metally. 2014. No. 5. pp. 58–63.
16. Liu Y., Fu L., Wang F., Wei J., Guan B., Tan J., Yang B., Wang D. Relationship between Pb-Zn and Au-Ag mineralization of Kengdenongshe polymetallic deposit in eastern segment of the Eastern Kunlun. Geotectonica et Metallogenia. 2018. Vol. 42. pp. 480–493.
17. Hedenquist J. W. Characteristic features of the epithermal environment that have implications for exploration. Proc. of the 15th IAGOD conference, 28–31 August 2018, Salta, Argentina. pp. 367–369.
18. Sahlström F., Dirks P., Chang Zh., Arribas A., Corral I., Obiri-Yeboah M., Hall C. The paleozoic Mount Carlton deposit, Bowen basin, northeast Australia: Shallow highsulphidation epithermal Au-Ag-Cu mineralization formed during rifting. Economic Geology. 2018. Vol. 113. pp. 1733–1767.
19. Magak'yan I. G. Metallogeny (the main ore belts). Moscow: Nedra, 1974, 304 p.
20. Sidorov A. A., Volkov A. V., Belyi V. F., Alekseev V. Yu., Kozlova E. E. Gold-silver-bearing Okhotsk-Chukotka volcanogenic belt. Geologiya Rudnykh Mestorozhdeniy. 2009. Vol. 51, No. 6. pp. 492–507.
21. Chernyshev K. E. Natural types of ores of the Natalka deposit and their industrial significance. Problems of geology and subsoil development. Proc. of the XVI International symposium named after Academic M. A. Usov for students and young scientists dedicated to the 110th anniversary of foundation of mining and geological education in Siberia. 2012. pp. 231–232.
22. Technological testing of non-ferrous metal deposits in the exploration process: methodological guide. Moscow: Ministry of non-ferrous metallurgy of the USSR, 1974. 48 p.
23. Small-volume technological testing and mapping of ore deposits during exploration. Moscow: VIMS, 1979. 47 p.
24. Izoitko V. M. Technological mineralogy and ore evaluation. St. Petersburg: Nauka, 1997. 582 p.
25. Vakhrusheva A. P. Intra-ore metamorphism and natural types of gold-bearing ores. Problems of geology and subsoil development. Proc. of the XVI International symposium named after Academic M. A. Usov for students and young scientists dedicated to the 110th anniversary of foundation of mining and geological education in Siberia. 2012. pp. 177–179.
26. Isaenko M. P., Afanas'yeva E. L. Laboratory methods of ore research. Moscow: Nedra, 1992. p. 254.

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