Mineralogy and geochemistry of low-temperature hydrothermal manifestations occurring on the surface of basalts and in their cracks within a submarine volcano in the north-eastern part of the Kuril deep-sea basin have been studied. The following order of isolation of mineral phases has been found out: Fe-rich sulphides (pyrite) - Fe-rich layered silicates (hydromica of celadonite-nontronite type) - amorphous silica (opal) - Fe-oxyhydroxides (goethite) - Mn-oxyhydroxides (vernadite). Sulphide mineralization is of the phenocryst-stockwork type. Finding of pure barite fragments does not exclude presence of hydrothermal exhalations (smokers) on this volcanic structure.

Supplement to: Derkachev, A N; Tararin, L A; Lelikov, Evgeny P; Mozherovsky, A V; Grainert, Y; Barinov, N N (2002): Manifestation of low-temperature hydrothermal activity in the back-arc basin, Okhotsk Sea (Kuril deep-sea basin). Tikhookeanskaya Geologiya (Pacific Geology), 21(3), 14-26