Issue 3(43), 2016

DOI 10.21440/2307-2091-2016-3-7-12

Geological structure, genesis and zoning of Novouchalinsk massive sulfide deposit (South Urals) pdf

P. I. Pirozhok

This article describes the history of discovery, exploration and subsequent geological study of one of the largest copper-zinc pyrite deposits of the Southern Urals – Novouchalinsk and determination of its position in the regional geologic structures. The authors described geological section of the deposit, including the strata and formation members of volcanogenic rocks of rhyolite-basalt subformations (Karamalytash formation D2ef-zv with horizons) of sulfide ores. The strata of the basalt-rhyolite subformation initially bedded subhorizontally underwent synfolded and rupturing deformations. Leading contemporary structure of the deposit, as well as ore field as a whole, is a compressed, meridionally elongated anticlinal fold. It has the ore controlling value. Fold has inherited the element of western edge of a large buried paleovolcano. At the core of the fold is a fragment of this volcano (the lower basalt strata), which is covered with rhyolite-basalt and overlying strata. The authors characterize leading textural varieties of ores: massive, layered breccia, complex.
The article contains the proof that zonal structure of the ore deposit field and features of its concentration within the main ore forming components. Obtained data indicates that that the formation of deposit occurred because of two main processes: sulphide deposits in the areas hydrothermal fluids outputs; and subsequent destruction of the mechanical movement of the ore material. Executed paleoreconstruction of the ore field has allowed identifying three ore extracting centers, over which ore hills formed. Their destruction led to appearance of the brecciated and layered breccia ore. Ores with the highest content of sulfur and copper are localized above the effluent channels of hydrothermal fluids, and enriched with zinc – in the overlying rock and on the flanks of emerging centers.
Novouchalinsk deposit is the main backup object of Uchalinsk ore mining and processing enterprise.

Keywords: Uchalinskoe ore field; Novouchalinsk deposit; volcanic strata; facies; the morphology of the ore bodies; mineral associations; paleoreconstruction structure of the ore field.



1. Pirozhok P. I., Didenko A. M. 1997, Istoriya otkrytiya i geologicheskoe stroenie Novouchalinskogo mestorozhdeniya [History of the discovery and the geological structure of Novouchalinsk deposit], Miass, pp. 81–87.
2. Pirozhok P. I., Seravkin I. B., Chadchenko A. V. 2000, Geologo-promyshlennaya i gorno-tekhnicheskaya kharakteristika ekspluatiruemykh i rezervnykh mestorozhdeniy. Uchalinskiy GOK na rubezhe XXI veka [Geological-industrial and mining-technical characteristics of the exploited and the reserve deposits. Uchalinsk mine at the turn of the XXI century], Ufa, pp. 30–108.
3. Seravkin I. B., Pirozhok II. I., Skuratov V. N. et al. 1994, Mineral’nye resursy Uchalinskogo GOKa [Mineral resources of Uchalinsk mine], Ufa, 328 p.
4. Borodaevskaya M. B., Kurbanov N. K., Shiray E. P., Shmidt A. I. 1973, Kolchedannye provintsii Yuzhnogo Urala i Mugodzhar [Pyrite provinces of Southern Urals and Mugodzhar], Trudy TsNIGRI [Transactions of the Central Scientific Research Institute of Geological Prospecting for Non-Ferrous and Noble Metals], Moscow, vol. 105, pp. 41–55.
5. Borodaevskaya M. B., Zlotnik-Khotkevich A. G., Pirozhok P. I., Shiray E. P. 1984, Usloviya lokalizatsii i formirovaniya kolchedannykh rud na primere Uchalinskogo mestorozhdeniya [Conditions for the localization and the formation of massive sulfide ore on example of Uchalinsk deposit], Sovetskaya geologiya [Soviet geology], no. 3, pp.25–35.
6. Shiray E. P. 1997, Paleostruktury Vostochno-Magnitogorskoy evgeosinklinali (Yuzhnyy Ural) na period formirovaniya kolchedanonosnykh formatsiy [Paleostructures of East Magnitogorsk eugeosyncline (South Urals) in the period of formation of pyrite–bearing formations]. Trudy TsNIGRI [Transactions of the Central Scientific Research Institute of Geological Prospecting for Non-Ferrous and Noble Metals], Moscow, vol. 126, pp. 24–31.
7. Trebukhin B. C., Shiray E. P. 1994, Rekonstruktsiya paleovulkanicheskikh struktur Uchalinskogo i Verkhneural’skogo rayonov [Reconstruction of paleovolcanic structures of Uchalinsk and Verkhneuralsk areas], Rudy i metally [Ores and metals], Moscow, no. 3–5. pp. 81–89.
8. Zlotnik-Khotkevich A. G., Kuznetsov A. G., Pirozhok P. I. 1991, Produkty razrusheniya gidrotermal’nykh postroek v kolchedanonosnykh rayonakh [Products of hydrothermal destruction of buildings in the pyrite-bearing areas], Sverdlovsk, pp. 56–62.
9. Pirozhok P. I., Zlotnik-Khotkevich A. G. 1978, Novye dannye o genezise Uchalinskogo kolchedannogo mestorozhdeniya [New data on the genesis of Uchalinsk massive sulfide deposit]. Doklady AN SSSR [Reports of the USSR Academy of Sciences], vol. 242, no. 2, pp.290–293.
10. Maslennikov V. V., Zaykov V. V. 1991, Produkty razrusheniya gidrotermal’nykh postroek [Products of hydrothermal destruction of buildings], Sverdlovsk, pp. 211–225.
11. Zlotnik-Khotkevich A. G., Andriyanova N. A. 1985, Temperatura rudootlozheniya kak osnovnoy faktor mineral’noy zonal’nosti kolchedannykh rud [The temperature of ore deposition as a major factor of mineral zoning pyrite ores]. Tezisy doklada soveshchaniya po termobarometrii i geokhimii rudoobrazuyushchikh flyuidov (po vklyucheniyam v mineralakh) [Theses on thermobarometry and geochemistry of ore–forming fluids of the report (on inclusions in minerals)], L’vov.

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