The article considers textural and structural features of hematite-carbonate rocks associated with carbonate-sulfde clastic ores of the Yubileynoe massive sulfde deposit, South Urals. Some hematite-carbonate rocks exhibit signatures of the replacement of sulfde clasts and hyaloclasts by hematite-carbonate material, classifed as carbonate analogs of gossanites. The hematite-carbonate aggregates after sulfde clasts are characterized by inherited reniform-colloform, radial and crystalline-granular structures, as well as the inclusions of relict sulfdes and tellurides. The hematite-carbonate aggregates after sulfde clasts contain the elevated concentrations of chalcophile (Cu, Zn, Pb, As, Sb, Bi, Te) and lithophile (Ti, Zr, V, W) trace elements. The hematite-carbonate clasts after hyaloclasts contain aggregates with globular structure and syneresis cracks and contain relics of chlorite. The matrix of hematite-carbonate rocks consists of calcite with inclusions and aggregates of dolomite, chlorite, quartz and apatite. Late sulfde mineralization (pyrite metacrystals, aggregates and veins of chalcopyrite and sphalerite) is characteristic of both hematite-carbonate rocks after sulfde clasts and hyaloclasts.

Received 10.11.2024, revised 28.11.2024, accepted 16.12.2024

Keywords: hematite-carbonate gossanites, submarine hypergenesis, hyaloclasts, halmyrolyisis, sulfdes, tellurides, LA-ICP-MS, Yubileynoe massive sulfde deposit.

Funding. The feld works was supported by state project no. 122031600292-6 of South Ural Federal Scientifc Center of Mineralogy and Geoecology UB RAS; The analytical work was supported by Russian Scientifc Foundation project no. 22-17-00215.

Confict of interest. The authors declare that they have no conficts of interest.

Author contribution. A.S. Tseluyko – conceptualization, investigation, visualization, writing – original draft, writing – review & editing; N.R. Ayupova – conceptualization, analytical/experimental works, writing – review & editing; D.A. Artemyev, M.A. Rassomakhin, V.A. Kotlyarov – analytical/experimental works.

For citation: Tseluyko A.S., Ayupova N.R., Maslennikov V.V., Artemyev D.A., Rassomakhin M.A., Kotlyarov V.A. Hematite-carbonate rocks of the Yubileynoe massive sulfde deposit (South Urals): evidence of replacement of sulfde clasts and hyaloclasts. Mineralogy, 2024, 10(4), 60–74. DOI: 10.35597/2313-545X-2024-10-4-3

A.S. Tseluyko,  South Ural Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk region, 456317 Russia; tseluyko@mineralogy.ru

N.R. Ayupova, South Ural Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk region, 456317 Russia;

D.A. Artemyev, South Ural Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk region, 456317 Russia;

M.A. Rassomakhin, South Ural Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk region, 456317 Russia;

V.A. Kotlyarov, South Ural Federal Research Center of Mineralogy and Geoecology UB RAS, Miass, Chelyabinsk region, 456317 Russia

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