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Voropaev, et al.

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                through  the  old  lava  field  covered  with  lichen  may      doi: 10.1007/s10646-013-1043-3
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                According to some estimations, they account for about      doi: 10.1016/0016-7037(93)90386-B
                95.4% of all reserves of these ores, and only 4.6% of the   4.  Stewart  C, Johnston DM, Leonard  CJ, Horwell  TT,
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                                                                        from data on its eruptions, earthquakes, deformation and
                Acknowledgments                                         deep structure. J Volcanol Seismol. 2010;4(1):1-33.

                                                                        doi: 10.1134/S074204631001001X
                The work was carried out according to the state     7.  Ignatenko   K.     https://kamchatka.aif.ru/bisness/
                assignment of GEOKHI RAS.                               finance_details/tri_kita_kamchatskoy_ekonomiki_na_
                                                                        chto_sdelayut_stavku_vlasti_kraya  [Last  accessed  on
                Funding                                                 2020 Oct 15] [In Russian].
                                                                    8.  Russian  Register  of   Potentially  Hazardous
                None.                                                   Chemical  and Biological  Substances of the Ministry
                                                                        of  Health  of  the  Russian  Federation.  Hygienic
                Conflict of interest                                    Standards  2.1.5.1315-03.  Maximum  Permissible
                                                                        Concentrations (MPC) of Chemicals in the Water of
                                                                        Water Bodies  for Economic,  Drinking  and Cultural
                The  authors  declare  that  they  have  no  conflicts  of   Water Use.  Moscow  [In  Russian].  Available  from:
                interest.                                               https://www.law.ru/npd/doc/docid/901862249/
                                                                        modid/99?ysclid=m7u4i5ov3m452770931      [Last
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                                                                    9.  Loshniv AM. The Main Pollutants of the Spawning Rivers
                Conceptualization: Sergey A. Voropaev                   of Kamchatka. Research of Young Scientists. Materials
                Investigation:  Vyacheslav  S. Sevastyanov, Nikita N.   of the XXI International Scientific Conference (Kazan,
                   Dushenko                                             June 2021). Available from: https://moluch.ru/conf/stud/
                Methodology: Elena A. Tkachenko, Irina N. Gromyak       archive/396/16559 [Last accessed on 2021 Jun 03].
                Writing – original draft: Sergey A. Voropaev        10.  Fedotov  SA,  editor.  Great Fssure Tolbachik Eruption
                Writing – review & editing: Sergey A. Voropaev          (1975-1976, Kamchatka). Moscow: Nauka; 1984.
                                                                    11.  Pekov I, Sandalov F, Koshlyakova N, et al. Copper in
                Availability of data                                    natural oxide spinels: The new mineral thermaerogenite
                                                                        CuAl O , cuprospinel  and Cu-enriched  varieties  of
                                                                              4
                                                                            2
                                                                        other spinel-group members  from fumaroles  of the
                Data are available  from the corresponding author on    Tolbachik volcano, Kamchatka  Russia.  Minerals.
                reasonable request.                                     2018;8(11):498-506.
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                Volume 22 Issue 1 (2025)                        40                                 doi: 10.36922/ajwep.8113
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