| Инд. авторы: | Bogush A.A., Galkova O.G., Ishuk N.V. |
| Заглавие: | Geochemical barriers to elemental migration in sulfide-rich tailings: Three case studies from Western Siberia |
| Библ. ссылка: | Bogush A.A., Galkova O.G., Ishuk N.V. Geochemical barriers to elemental migration in sulfide-rich tailings: Three case studies from Western Siberia // Mineralogical Magazine. - 2012. - Vol.76. - Iss. 7. - P.2693-2707. - ISSN 0026-461X. - EISSN 1471-8022. |
| Внешние системы: | DOI: 10.1180/minmag.2012.076.7.05; SCOPUS: 2-s2.0-84875756063; |
| Реферат: | eng: This study describes geochemical barriers that have developed at three different localities in sulfiderich tailings in the Kemerovo region of Western Siberia, Russia. Iron oxyhydroxides, gypsum, malachite, chalcanthite, goslarite, bianchite, gunningite and copper and zinc chlorides crystallized in the sequence specified at an evaporative barrier around glassy slag produced by the Belovo zinc processing plant. A complex cemented barrier that has developed within the old Salair sulfide tailings contains two well defined layers: an upper layer containing Fe(III) minerals and gypsum as cements in which Pb, As, Mo, Ni and Co have been deposited; and (2) a lower calcite- and gypsum-bearing layer, in which phases containing Zn, Cd and Cu have been deposited. A complex organic-mineral barrier below the Ursk sulfide tailings consists of peaty organic matter, clay minerals and iron oxyhydroxides cemented by gypsum. Elements that have leached from the tailings are present in this barrier in a variety of different forms: Ca and Mn are present as water-soluble species; Cu, Fe and Zn are present as species produced by interaction with organic matter via ion-exchange, metal humate formation and cation bridging in organic-mineral complexes; Pb and As are co-precipitated with and/or adsorbed onto iron oxyhydroxides; gold has been deposited as minute particles of native metal. The mechanisms for the formation of the different geochemical barriers are discussed. © 2012 The Mineralogical Society.
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| Ключевые слова: | Geochemical barrier; Heavy metal species; Sulfide tailings; Element migrations; Geochemical barriers; Iron oxyhydroxides; Metal species; Organic-mineral complexes; Sulfide tailings; Water-soluble species; Western Siberia , Russia; Element migrations; Geochemical barriers; Iron oxyhydroxides; Metal species; Organic-mineral complexes; Sulfide tailings; Water-soluble species; Western Siberia , Russia; Biogeochemistry; Biological materials; Chlorine compounds; Cobalt compounds; Copper; Deposits; Gold deposits; Gypsum; Ion exchange; Iron; Iron compounds; Lead; Manganese removal (water treatment); Molybdenum compounds; Organic compounds; Slags; Sulfur compounds; Zinc; Biogeochemistry; Biological materials; Cobalt compounds; Geochemistry; Gold compounds; Gold deposits; Gypsum; Heavy metals; Ion exchange; Iron; Iron compounds; Manganese; Manganese removal (water treatment); Siberia; Russian Federation; Kemerovo; zinc; tailings; sulfide; slag; organic matter; malachite; leaching; ion exchange; hydroxide; gypsum; geochemistry; element mobility; copper; clay mineral; Copper; Element migration; Zinc sulfide; Zinc chloride; Zinc; Sulfur compounds; Slags; Organic minerals; Organic compounds; Molybdenum compounds; Minerals; Zinc sulfide; |
| Издано: | 2012 |
| Физ. характеристика: | с.2693-2707 |