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ISSUES OF THE TASHTAGOL IRON-ORE DEPOSIT GENESIS (GORNAYA SHORIYA)

F. V. Kirillovskiy

Zapsibgeologiya, Novokuznetsk, Russia

The article discusses the genesis of the Tashtagol iron-ore deposit, the largest in West Siberia. The deposit has been mining for many years, but its geology, ore genesis and structure have not yet been clarified. This can be explained by the fact that the deposit has a complex geological structure, the host rocks are intensively metamorphosed and interstratified, there are few sedimentary rocks, and their areas are separated, the shearthrust disturbances are highly developed. The author denies the volcanogenic-sedimentary hypothesis of the deposit’s origin, believing that not tuff aceous rocks of the Mundybashskaya Formation of Middle Cambrian served as ore-bearing rocks, but eruptive breccias forming the marginal zones of gabbro and syenite intrusions, which were mistaken for tuffs.

Keywords: Gornaya Shoriya, ore genesis, eruptive breccia, gabbro and syenite intrusions, unique magnetic anomaly.

DOI 10.20403/2078-0575-2018-2-61-64