Anna S. Deviatiiarova

V.S. Sobolev Institute of Geology and Mineralogy

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ÉV

É. V. Sokol

V.S. Sobolev Institute of Geology and Mineralogy

Svetlana N. Kokh

V.S. Sobolev Institute of Geology and Mineralogy

Dmitry A. Artemyev

Institute of Mineralogy

P. V. Khvorov

Institute of Mineralogy

Yurii V. Seryotkin

V.S. Sobolev Institute of Geology and Mineralogy

Anna V. Nekipelova

V.S. Sobolev Institute of Geology and Mineralogy

Victoria A. Danilovsky

V.S. Sobolev Institute of Geology and Mineralogy

Adam Abersteiner

University of Helsinki

V. V. Sharygin

V.S. Sobolev Institute of Geology and Mineralogy

E. N. Nigmatulina

V.S. Sobolev Institute of Geology and Mineralogy

Cooperative Institutions

V.S. Sobolev Institute of Geology and Mineralogy

Russian Academy of Sciences

Siberian Branch of the Russian Academy of Sciences

Institute of Mineralogy

Novosibirsk State University

Czech Academy of Sciences, Institute of Geology

Siberian Research Institute of Geology, Geophysics and Mineral Resources

Institute of the Earth’s Crust

Zavaritsky Institute of Geology and Geochemistry

Institute of Petroleum Geology and Geophysics

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Sulfide Mineralization Hosted by Spurrite-Mervinite Marbles (Kochumdek River, East Siberia)

Doklady Earth Sciences (2019)

É. V. Sokol Anna S. Deviatiiarova Svetlana N. Kokh В. В. Ревердатто Dmitry A. Artemyev

10.1134/s1028334x19110163

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Citations (4)

Onshore mud volcanoes as a geological source of mercury: Case study from the Kerch Peninsula, Caucasus continental collision zone

The Science of The Total Environment (2020)

Svetlana N. Kokh É. V. Sokol M. A. Gustaytis Ivan A. Sokol Anna S. Deviatiiarova

Cinnabar

Mercury

10.1016/j.scitotenv.2020.141806

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Citations (7)

Carbon and Oxygen Stable Isotopes in Isochemical Contact Metamorphism (Case Study of the Kochumdek Aureole, East Siberia)

Russian Geology and Geophysics (2023)

É. V. Sokol Anna S. Deviatiiarova A. N. Pyryaev Т. А. Бульбак А. А. Томиленко

Protolith

δ18O

Metasomatism

10.2113/rgg20234545

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Ge-Hg-Rich Sphalerite and Pb, Sb, As, Hg, and Ag Sulfide Assemblages in Mud Volcanoes of Sakhalin Island, Russia: An Insight into Possible Origin

Minerals (2021)

É. V. Sokol Svetlana N. Kokh Anna V. Nekipelova Adam Abersteiner Yurii V. Seryotkin

We characterize the mineralogy and geochemistry of Fe, Zn, Pb, Sb, As, Hg, Ag sulfide assemblages from mud masses currently extruded by the onshore South Sakhalin and Pugachev mud volcanoes (Sakhalin Island, Russia). Abundant Tl-rich pyrite in sulfide concentrate samples from the mud volcanoes coexists with common Hg- and Ge-rich sphalerite, as well as with sporadic boulangerite, robinsonite, bournonite, galena, realgar, metacinnabar, cinnabar, acanthite, and chalcopyrite. Sphalerites are remarkably enriched in Hg (locally reaching 27 wt%) and coupled zwith permanent abnormal enrichment in Ge (3008–3408 ppm). According to single-crystal XRD analyses and Raman spectroscopy, both Hg-poor and Hg-rich sphalerites are single-phase (Zn,Hg)Scub compounds. Pyrite is of diagenetic origin, judging by its trace-element chemistry, particular morphology, and heavy S isotope composition. Another assemblage, composed of Pb-Sb-(Hg) sulfide minerals and lesser As, Cu, Ag, and Bi compounds, results from hydrothermal alteration and is genetically related to Neogene volcano-sedimentary rocks found among the ejecta of the mud volcanoes. The composition of impurities in sphalerite from mud masses indicates crystallization at temperatures lower than ~100 °C, under the leaching effect of mud volcano waters.

Bornite

Alunite

Mud volcano

10.3390/min11111186

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Citations (9)

Monticellite from Spurrite Marbles of the Kochumdek Contact Aureole

Springer proceedings in earth and environmental sciences (2023)

Anna S. Deviatiiarova

10.1007/978-3-031-23390-6_5

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Geochemical Evidence and Geological Prerequisites for Isochemical Metamorphism in the Kochumdek Contact Aureole (East Siberia)

Russian Geology and Geophysics (2022)

É. V. Sokol O.A Kozmenko Anna S. Deviatiiarova Svetlana N. Kokh O.P. Polyansky

Siliciclastic

Tourmaline

10.2113/rgg20214375

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Citations (2)

Alumina Hosts in Fe- and Al-Rich Metapelites from Transangaria (Yenisey Ridge, East Siberia): Distribution, Composition, and Mining Potential

Minerals (2023)

É. V. Sokol Svetlana N. Kokh Anna V. Nekipelova И. И. Лиханов Anna S. Deviatiiarova

Fe- and Al-rich metapelite from the Transangarian segment of the Yenisey Ridge (East Siberia, Russia) is a potential new source of high-alumina refractories. The rocks have relatively high average contents of Al2O3 (20 wt%) and Fe2O3 (7.91 wt%), moderate K2O (3.44 wt%), and low CaO (0.74 wt%). Their dominant mineral assemblages are andalusite + muscovite + margarite + chlorite + biotite + quartz or staurolite + kyanite or/and andalusite + chlorite + muscovite + biotite + quartz with ±garnet and ±plagioclase. Al2SiO5 polymorphs occur as up to 1.5 cm andalusite porphyroblasts and partial or complete pseudomorphs after andalusite (kyanite and staurolite). Accessories include abundant Fe–Ti oxides and sporadic REE-, Y-, Ca-phosphates; sulfides are negligible. The composition of Al2SiO5 concentrates obtained in laboratory by heavy-media and magnetic separation from ≥0.06 mm fractions meet all requirements for raw material of this type: >56 wt% Al2O3, <42 wt% SiO2, <1 wt% Fe2O3, <1.2 wt% TiO2, and <0.2 wt% (CaO + MgO). The andalusite, kyanite, and mixed ores yield 0.7–4.1 wt%, 0.7–2.2 wt%, and 1.9–6.0 wt% of concentrate, respectively. The best-quality ores rich in Al2SiO5 polymorphs reside in zones of contact and/or dynamic metamorphism superimposed over regional metamorphism of Al-rich rocks.

Andalusite

Staurolite

Muscovite

Sillimanite

Pseudomorph

10.3390/min13101316

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Monticellite–Spurrite Symplectites: Evidence for a Regressive Stage of the Kochumdek Trap Contact Aureole (Krasnoyarsk Region)

Geology of Ore Deposits (2022)

Anna S. Deviatiiarova É. V. Sokol Svetlana N. Kokh P. V. Khvorov

Trap (plumbing)

Energetics

10.1134/s1075701522080049

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Citations (2)

Sulfide Minerals as Potential Tracers of Isochemical Processes in Contact Metamorphism: Case Study of the Kochumdek Aureole, East Siberia

Minerals (2020)

É. V. Sokol Anna S. Deviatiiarova Svetlana N. Kokh V. N. Reutsky Adam Abersteiner

Marly limestones from the Lower Silurian sedimentary units of the Tunguska basin (East Siberia, Russia) underwent metamorphism along the contact with the Early Triassic Kochumdek trap intrusion. At ≤ 2.5 m from the contact, the limestones were converted into ultrahigh-temperature marbles composed of pure calcite and sulfide-bearing calcsilicate layers. The sulfide assemblages in the gabbro and marbles were studied as potential tracers of spurrite-merwinite facies alteration. The gabbro-hosted sulfides show Fe-Ni-Cu-Co speciation (pyrrhotite and lesser amounts of chalcopyrite, pentlandite, and cobaltite) and positive δ34S values (+2.7 to +13.1‰). Both matrix and inclusion sulfide assemblages of prograde melilite, spurrite, and merwinite marbles consist dominantly of pyrrhotite and minor amounts of troilite, sphalerite, wurtzite, alabandite, acanthite, and galena. In contrast to its magmatic counterpart, metamorphic pyrrhotite is depleted in Cu (3–2000 times), Ni (7–800 times), Se (20–40 times), Co (12 times), and is isotopically light (about –25‰ δ34S). Broad solid solution series of (Zn,Fe,Mn)Scub, (Zn,Mn,Fe)Shex, and (Mn,Fe)Scub indicate that the temperature of contact metamorphism exceeded 850–900 °C. No metasomatism or S isotope resetting signatures were detected in the prograde mineral assemblages, but small-scale penetration of magma-derived K- and Cl-rich fluids through more permeable calcsilicate layers was documented based on the distribution of crack-filling Fe-K sulfides (rasvumite, djerfisherite, and bartonite).

Pentlandite

10.3390/min11010017

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Citations (8)

Sulfides in the marbles of spurrite-merwinite facies: the Kochumdek River, East Siberia

Доклады Академии наук (2019)

É. V. Sokol Anna S. Deviatiiarova Svetlana N. Kokh В. В. Ревердатто Dmitry A. Artemyev

In the marbles of the Kochumdek contact metamorphic aureole pyrrhotite, rasvumite, sphalerite, alabandite, wurtzite, galena, acanthite have been identified. Mineralogical diversity of sulphides is the consequence of the efficient crystal-chemical fractionation of trace elements under the PT‑conditions of spurrite-merwinite metamorphic facies. Trace element and isotope fingerprints of sulfides indicate that sedimentary parent rocks were the main source of sulfur and metals for sulfides mineralization.

10.31857/s0869-56524892174-178

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Citations (0)