Mineral composition of Fe-oxide-Cu-Au (IOCG) ores in the basalts of manifestation Hurat (the Sette-Daban ridge, Eastern Yakutia)
Abstract
Manifestations with Fe-oxide-Cu-Au±REE ores is a new direction in mining geology of Russian North-East. One of unexplored genetic varieties of the Fe-oxide Cu-Au (IOCG) ores, associated with basalt covers was discovered during field works 2013-2015, Sette-Daban ridge. The sole of basaltic cover (manifestation Hurat) include a bedded deposit of hematite breccia with sparse sulfide mineralization. Ores are complex and economically attractive the content of FeOtot – 15.11–43.29 %; Cu – 0.023–0.083 %; Au – 0.1–17.5 g/t and the main mineral-concentrator of gold is hematite. It has been established that clusters of Fe-oxide ores were formed by the decomposition of ilmenite into hematite, ulvospinel, pseudorutile and rutile. Native gold in ores contain admixture of iron and palladium and does not contain any silver at all. One of the important genetic characteristics of ores are constant presence of monazite-Ce, the chemical composition of which is not constant and is determined by the amount of Ce, La, Pr, Nd, Sm, Eu, Gd, Tb. Its origin is closely connected with the formation of Fe-oxide ores, where monazite is found everywhere in intergrowths with Ti-hematite and pseudorutile.
Supporting agencies: this work was carried out with financial support of the R&D plan of IGABM SB RAS, project No. 0381-2016-0004 and «Strategically important types of mineral raw material resources and feature of a geological structure of investment-attractive territories of the Republic of Sakha (Yakutia): metallogeny, tectonics, magmatism, geoecology, improvement of search and prognostic technologies» program of the complex scientific research in the Republic of Sakha (Yakutia) aimed at the development of productive forces and the social sphere for 2016-2020.
About the Author
Alexey Valentinovich Kostin
Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
References
1. Votyakov S.L., Shapova Y.V., Hiller V.V. Kristallohimiya i fizika radiacionno-termicheskih effektov v ryade U-Th-soderzhaschih mineralov kak osnova dlya ih himicheskogo mikrozondovogo datirovaniya // Pod red. N.P. Yushkina. Ekaterinburg: Institut geologii i geohimii URO RAN, 2011, p. 336.
2. Kostin A.V., Zhelonkina M.S., Vedyaev A.Y., Rafat G. Fe-oksidnaya-Cu-Au mineralizaciya (IOCG-tipa): novye perspektivy blagorodnometal'nogo orudeneniya Vostochnoj Yakutii // Glyukauf Majning Report, 2014, №1, pp. 24 – 30.
3. Kostin A.V. Mineral'nye raznovidnosti Feoksidnyh-Cu rud proyavlenij Dzhalkan, Rosomaha i Hurat (Sette-Daban, Vostochnaya Yakutiya) // Otechestvennaya geologiya, 2016, №6, pp. 11–15.
4. Kostin A.V. Mineralogicheskie osobennosti Fe-oksidnyh-Cu-Au (IOCG) rud v bazal'tah hrebta Sette-Daban (Vostochnaya YAkutiya) // Uspekhi sovremennogo estestvoznaniya, 2017, № 4, pp. 90– 96. DOI – 10.18411/a-2017-118.
5. Kutyrev E.I., Sobolev A.E., Ispravnikov A.V., i dr. Medistye peschaniki i medistye bazal'ty SetteDabanskogo regiona // Stratiformnoe orudenenie Yakutii: Sbornik nauchnyh trudov, Yakutsk: YAF SO AN SSSR, 1988, pp. 74–87.
6. Smyslov A.A. Uran i torij v zemnoj kore. Nedra, Leningr. otd-nie, 1974.
7. Yakovlev G. F., Hisamutdinov M. G., Demin Y. I. Poligennost' i polihronnost' kolchedannopolimetallicheskih mestorozhdenij Rudnogo Altaya // Geol. rudn. mestorozhd., 1975, № 3, pp. 66–67.
8. Yan-Zhin-Shin V.A. Tektonika SetteDabanskogo gorst-antiklinoriya // Yakutsk: YAF SO AN SSSR, 1983.
9. Corriveau L., Williams P. J., Mumin A. H. Exploring for iron oxide copper-gold deposits: Canada and global analogues // Geological Association of Canada, Short Course Notes, 2010, vol. 20, p. 185.
10. Forster H.J. The chemical composition of REEY-Th-U-rich accessory minerals from the Erzgebirge-Fichtelgebirge region, Germany. Part I: the monazite-(Ce)-brabantite solid solution series // Amer. Miner. 1998, vol. 83, pp. 259–272.
11. Forster H.J., Harlov D.E. Monazite-(Ce)huttonite solid solutions in granulite-facies metabasites from the Ivrea-Verbano Zone, Italy // Miner. Mag. 1999, vol. 63, pp. 587–594.
12. Groves D. I., Santosh M. Province-scale commonalities of some world-class gold deposits: implications for mineral exploration // Geoscience Frontiers, 2015, vol. 6, №. 3, pp. 389–399.
13. Kucha H. Continuity in the monazitehuttonite series // Miner. Mag., 1980, pp. 1031– 1034.
14. Oliver, N. H., Butera, K. M., Rubenach, M. J. et al. The protracted hydrothermal evolution of the Mount Isa Eastern Succession: A review and tectonic implications // Precambrian Research, 2008, vol. 163, №. 1, pp. 108–130.
15. Richards J. P., Mumin A. H. Magmatichydrothermal processes within an evolving Earth: Iron oxide-copper-gold and porphyry Cu±Mo±Au deposits // Geology, 2013, vol. 41, №. 7, pp. 767770.
16. Spear F.S., Pyle J.M. Apatite, monazite, and xenotime in metamorphic rocks // Rev. Miner. Geochem, 2002, vol. 48, pp. 293–335.
17. Williams M.L., Jercinovic M.J., Hetherington C.J. Microprobe Monazite Geochronology: Understanding Geologic Processes by Integrating Composition and Chronology // Annual Rev. Earth Planet. Sci. 2007, vol. 35, pp. 137–175.
Review
For citations:
Kostin A.V. Mineral composition of Fe-oxide-Cu-Au (IOCG) ores in the basalts of manifestation Hurat (the Sette-Daban ridge, Eastern Yakutia). Arctic and Subarctic Natural Resources. 2018;23(1):30-38. (In Russ.)
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