Pyrite From Zones Of Mz-Kz Reactivation Of Large Faults On The Eastern Slope Of The Ural Mountains, Russia

• Main Authors: O. B. Azovskova, А. А. Malyugin, А. А. Nekrasova, M. Yu. Yanchenko
• Format: Text
• Language: English
• Published: Zenodo 2013
• Subjects: Gold in weathering crust; low temperature metasomatism; pyrite; native tungsten; Urals.; Andreyev; Hayton; Magadan; Nekrasova; Pacific; Tolbachik; ural mountains
• Online Access: https://dx.doi.org/10.5281/zenodo.1086921; https://zenodo.org/record/1086921

Pyritisation halos are identified in weathering crusts and unconsolidated formations at five locations within large fault structure of the Urals’ eastern slope. Electron microscopy reveals the presence of inclusions and growths on pyrite faces – normally on cubic pyrite with striations, or combinations of cubes and other forms. Following neogenesis types are established: native elements and intermetallic compounds (including gold and silver), halogenides, sulphides, sulfosalts, tellurides, sulphotellurides, selenides, tungstates, sulphates, phosphates, carbon-based substances. Direct relationship is noted between amount and diversity of such mineral phases, and proximity to and scale of ore-grade mineralization. Gold and silver, both in native form and within tellurides, presence of lead (galena, native lead), native tungsten, and, possibly, molybdenite and sulfosalts can indicate gold-bearing formations. First find of native tungsten in the Urals is for the first time – in crystallised and druse-like form. Link is suggested between unusual mineralization and “reducing” hydrothermal fluids from deep-seated faults at later stages of Urals’ reactivation. : {"references": ["", "V. N. Sazonov, V. N. Ogorodnikov, V. A. Koroteyev, Yu. A. Polenov,\nUrals Gold Deposits. Yekaterinburg: UGGGA, 2001.", "O. B. Azovskova, K. A. Zubarev, J. L. Ronkin, A. A. Nekrasova, L. O.\nMagazina, \"First data on pyrite geochemistry in zones of Meso-\nCenozoic reactivation in the Middle Urals, connection with endogenous\ngold mineralisation\", in. Proc. Internat. Conf. Problems of geology of\nOre Deposits, Mineralogy, Petrology, and Geochemistry, Moscow,\n2008. pp. 113-117.", "O. B. Azovskova, A. P. Mikhailov, A. A. Nekrasova, A. I. Zubkov,\n\"Development of placer gold ore systems in long-lived deep-seated fault\nzones (example of Serovsko-Maukski Fault, Middle Urals)\"in Proc. II\nIntern. Mining and Geol. Forum Gold of North Pacific Margin,\nMagadan, 2011. pp. 50-52 (Eng.).", "O. B. Azovskova, Y. V. Schegolkov, S. P. Glavatskih, A. A. Nekrasova,\n\"Pyrite from haloes of reactivation of large fault structures: certain\ntypomorphic features and association with carbon metasomatism\". //\nProc. Intern. Seminar Crystalline and Solid Non-crystalline State of\nMineral Substance, Syktyvkar, 2012. pp. 105-108.", "A. P. Sigov, Metallogeny of Mesozoic and Ceinozoic&&& in the Urals.\nMoscow: Nedra, 1969.", "O. B. Azovskova, \u0410. \u0410. Nekrasova, Yu. V. Schegolkov, \"Description of\n\"young\" pyrite mineralisation of Serovsko-Maukski Fault zone\n(Aivinsko-Yemekhski block)\". Bulletin of the Urals Branch of RMS)\nNo. 8, Yekaterinburg. 2011. pp. 5-12.", "B. S. Andreyev, Pyrite in gold Ore Deposits. Moscow: Nauka, 1992.", "G. A. Yurgenson, Typomorphism and Ore Formations. Novosibirsk:\nNauka, 2003.", "O. N. Gryaznov, A. G. Barannikov, K. P. Savelieva, Unconventional\ntypes of gold-argillisite mineralization in Mesozoic structures of the\nUrals. // Izvestiya UGGU, Iss. 22, pp. 41-53, 2007.\n[10] A. I. Grabezhev, V. I. Sotnikov, A. A. Borovikov, O. B. Azovskova\n\"Genetic Typification of Gumeshki Copper-Skarn Deposit (Middle\nUrals). // Reports of the Academy of Sciences, Vol. 380, No. 2, pp. 242-\n245, 2001.\n[11] S. F. Glavatskikh, N. V. Trubkin, \"First Finds of native Tungsten and\nSilver in exhalation Products of the Great Tolbachik Fissure Eruption,\nKamchatka. Reports of the Academy of Sciences, vol. 373-\u0410, no. 6. pp.\n1282-1285, 2000.\n[12] A.E. Lukin, \"On native tungsten in rocks of petroliferous complexes\",\nReports of the National Academy of Sciences of Ukraine, 2009, No. 2,\npp. 121-130.\n[13] \"Organoelemental Chemistry Methods. Copper, Scandium, Titanium,\nVanadium, Chromium, manganese Subgroups\", book 2, A. N.\nNesmeyanova and K. A. Konenkova, Ed., Moscow: 1974.\n[14] C. B. Pamplin, T. W. Hayton, P. Legzdins, \"Tungsten: Organometallic\nChemistry\", Published Online: 15 DEC 2011\nDOI: 10.1002/9781119951438.eibc0233. Published in Encyclopedia of\ninorganic and bioinorganic chemistry.\n[15] V. E. Ivanov, E. P. Nechiporenko, V. M. Krivoruchko, V. V.\nSagalovich, Crystallisation of High-Melting-Point Metals from Gas\nPhase, Moscow: Atomizdat, 1974.\n[16] V. L. Tauson, D. N. Babkin, T. M. Pastushkova et al., Dualistic\ndistribution coefficients of elements in the system mineral-hydrothermal\nsolution. I. Gold accumulation in pyrite. Geochemistry, No. 6, pp. 295-\n604, 2011.\n[17] V.L. Tauson, R.G. Kravtsova, \"Gold distribution and modes of gold\noccurrence of pyrites of epithermal gold-silver deposits of Northern\nOkhotsk region\", in Proc. II Intern. Mining and Geol. Forum Gold of\nNorth Pacific Margin, Magadan, 2011. pp. 17-19. Engl."]}