Precious metal mineralization of Endybal ore mountain (Western Verkhoyanye, Russia)
Abstract
The Endybal Ore Mountain combines several forms of silver and gold as part of a major Endybal silver cluster in Western Verkhoyanye (Eastern Yakutia). This ore-magmatic system from North to South includes occurrences of silver Sterzhnevoy, Vostochniy, Verkhneendybalskiy and Nizhneendybalskiy. During all periods of exploration of this area, the main interest was concentrated around silver ores. The main ore body of the Nizhneendybalskiy manifestation consists of local zones of breccia with ore cement and numerous closely spaced cracks filled with carbonate, quartz, sulfides and silver sulphosalts. Measurements of elements of occurrence of ore cracks in stockwork contours showed directions from 60 to 135° at angles of incidence from 15° to almost vertical. Because of this, the exploration of this manifestation by core drilling is inefficient, the most optimal is large-volume testing. Several mineral types represent the ores: stratabound siderite – ankerite silver sulphosalt veinlets with minor galena; intersecting veinlets of galena with lenses of arsenopyrite, marmatite, pyrite, siderite and traces of pyrargyrite; the zones of breccias and vein-disseminated siderite-chalcopyrite-pyrite mineralization. Testing of spatially contiguous silver and copper ores from rock outcrops of the Nizneendybalskiy manifestation showed the presence of gold – the grade is up to 6 g/t. Gold and silver in the ores form a direct correlation, gold in the sample refers to electrum, and the ores to goldsilver ones.
Supporting agencies: The article was prepared with the financial support of research project No. 03812019-0004 of Diamond and Precious Metal Geology Institute (DPMGI) SB RAS
About the Authors
Aleksey Valentinovich Kostin
Diamond and Precious Metal Geology Institute SB RAS
Russian Federation
Russian Federation
KOSTIN Aleksey Valentinovich, Doctor of Geological and Mineralogical Sciences, Head of Laboratory, Diamond and Precious Metal Geology Institute SB RAS, 39 Lenin Ave., Yakutsk, 677980, Russia,
https://orcid.org/0000-0002-5778-6505, kostin@diamond.ysn.ru;
Mariya Sergeevna Zhelonkina
Diamond and Precious Metal Geology Institute SB RAS
Russian Federation
Russian Federation
ZHELONKINA Mariya Sergeevna, Leading Engineer, Diamond and Precious Metal Geology Institute SB RAS, 39 Lenin Ave., Yakutsk, 677980, Russia,
https://orcid.org/0000-0003-2309-3118
References
1. Konstantinov M.M., Kostin A.V., Sidorov A.A. Geologiya mestorozhdenij serebra // Yakutsk: Sakhapoligrafizdat, 2003.
2. Kostin A.V., Zajtsev A.I., Shoshin V.V., Ganeev A.Sh., Lobanov S.P. Serebronosnaya provintsiya Zapadnogo Verkhoyan'ya. Yakutsk: Izd-vo SO RAN, 1997. 155 s.
3. Kostin A.V. Novye dannye o geologii Endybal'skogo serebrorudnogo uzla (Zapadnoe Verkhoyan'e, Yakutiya) // Otechestvennaya geologiya. 2008. № 5. S. 33–42.
4. Goryachev N.A. i dr. Au-Ag-orudenenie vulkanogennykh poyasov severo-vostoka Azii // Litosfera. 2010. № 3. S. 36–50.
5. Pollard P.J. An intrusion-related origin for Cu–Au mineralization in iron oxide–copper–gold (IOCG) provinces // Mineralium Deposita. 2006. V. 41, no. 2. P. 179–187.
6. Kostin A.V. Iron-Oxide Cu-Au (IOCG) Mineralizing Systems: Eastern Yakutia Perspective // Journal of Environmental Science and Engineering. David Publishing Company. 2012. V. 9. P. 1045–1053. https://doi.org/10.17265/2162-5263/2012.09.001.
7. Kostin A.V., Vedyaev A.Y., Rafat G. Iron oxide Cu-Au (IOCG) mineralizing systems: an example from northeastern Russia // The Journal of The Southern African Institute of Mining and Metallurgy. 2014. V. 114. P. 645–650.
8. Camprubí A., González-Partida E. Mesozoic magmatic–hydrothermal iron oxide deposits (IOCG ‘clan’) in Mexico: A review // Ore Geology Reviews. 2017. V. 81, part 3. P. 1084–1095. https:// doi.org/10.1016/j.oregeorev.2015.11.025.
9. Camprubía A., González-Partidab E., LópezMartínezc M. et. al. The Upper Cretaceous Guaynopa IOCG and Guaynopita porphyry copper deposits, Chihuahua, Mexico // Ore Geology Reviews. 2017. V. 81, part 3. P. 1096–1112. https:// doi.org/10.1016/j.oregeorev.2016.01.006.
10. Tornos F. et al. The Tropezón Cu–Mo–(Au) deposit, Northern Chile: the missing link between IOCG and porphyry copper systems? // Mineralium Deposita. 2010. V. 45, no. 4. P. 313–321. DOI: 10.1007/s00126-010-0277-8.
Review
For citations:
Kostin A.V., Zhelonkina M.S. Precious metal mineralization of Endybal ore mountain (Western Verkhoyanye, Russia). Arctic and Subarctic Natural Resources. 2018;23(4):30-44. (In Russ.)
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