Geochemical barriers to elemental migration in sulfide-rich tailings: Three case studies from Western Siberia

A. A. Bogush, O. G. Galkova, N. V. Ishuk

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2693-2707
Number of pages15
JournalMineralogical Magazine
Volume76
Issue number7
DOIs
Publication statusPublished - 1 Dec 2012
Externally publishedYes

Fingerprint

Calcium Sulfate
Tailings
Sulfides
tailings
gypsum
Organic minerals
sulfide
iron
Biological materials
Bearings (structural)
mineral
Metals
zinc
organic matter
malachite
Calcium Carbonate
metal
slag
Clay minerals
Gold

Keywords

  • Element migration
  • Geochemical barrier
  • Heavy metal species
  • Sulfide tailings

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Geochemical barriers to elemental migration in sulfide-rich tailings : Three case studies from Western Siberia. / Bogush, A. A.; Galkova, O. G.; Ishuk, N. V.

In: Mineralogical Magazine, Vol. 76, No. 7, 01.12.2012, p. 2693-2707.

Research output: Contribution to journalArticle

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