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 language | English |
|---|---|
| Pages (from-to) | 2693-2707 |
| Number of pages | 15 |
| Journal | Mineralogical Magazine |
| Volume | 76 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Dec 2012 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Geochemical barriers to elemental migration in sulfide-rich tailings
T2 - Three case studies from Western Siberia
AU - Bogush, A. A.
AU - Galkova, O. G.
AU - Ishuk, N. V.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - 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.
AB - 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.
KW - Element migration
KW - Geochemical barrier
KW - Heavy metal species
KW - Sulfide tailings
UR - http://www.scopus.com/inward/record.url?scp=84875756063&partnerID=8YFLogxK
U2 - 10.1180/minmag.2012.076.7.05
DO - 10.1180/minmag.2012.076.7.05
M3 - Article
VL - 76
SP - 2693
EP - 2707
JO - Mineralogical Magazine
JF - Mineralogical Magazine
SN - 0026-461X
IS - 7
ER -