MINERALOGY OF WEATHERING PRODUCTS OF Fe-As-Sb MINE WASTES AND SOILS AT SEVERAL Sb DEPOSITS IN SLOVAKIA

Lalinská‐Voleková, Bronislava; Majzlan, Juraj; Klimko, Tomáš; Chovan, Martin; Kučerová, Gabriela; Michňová, Jana; Hovorič, Róbert; Göttlicher, Jörg; Steininger, Ralph

doi:10.3749/canmin.50.2.481

Cited by 36 publications

(12 citation statements)

References 51 publications

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“…Secondary minerals are crucial for the capture of trace elements (Petrunic et al 2009; Jamieson et al 2005), and HFO in particular are well known as important sinks for several metals and metalloids including As, Cu, Sb, and Zn (Essilfie-Dughan et al 2012; Lalinská-Volekovová et al 2012; Parviainen 2009; Alakangas and Öhlander 2006; Gunsinger et al 2006; Foster et al 1998). The addition of LKD led to a decrease in Zn, and it showed no immediate influence on As and Cu whereas the opposite was observed for Sb despite low content in the waste rock and low leachability of Sb from LKD (Fig.…”

Section: Resultsmentioning

confidence: 99%

Prevention of sulfide oxidation in waste rock by the addition of lime kiln dust

Nyström

Kaasalainen

Alakangas

2019

Environ Sci Pollut Res

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During the operation of a mine, waste rock is often deposited in heaps and usually left under ambient conditions allowing sulfides to oxidize. To focus on waste rock management for preventing acid rock drainage (ARD) formation rather than ARD treatment could avoid its generation and reduce lime consumption, costs, and sludge treatment. Leachates from 10 L laboratory test cells containing sulfide-rich (> 60% pyrite) waste rock with and without the addition of lime kiln dust (LKD) (5 wt.%) were compared to each other to evaluate the LKD’s ability to maintain near neutral pH and reduce the sulfide oxidation. Leaching of solely waste rock generated an acidic leachate (pH < 1.3) with high concentrations of As (21 mg/L), Cu (20 mg/L), Fe (18 g/L), Mn (45 mg/L), Pb (856 μg/L), Sb (967 μg/L), S (17 g/L), and Zn (23 mg/L). Conversely, the addition of 5 wt.% LKD generated and maintained a near neutral pH along with decreasing of metal and metalloid concentrations by more than 99.9%. Decreased concentrations were most pronounced for As, Cu, Pb, and Zn while S was relatively high (100 mg/L) but decreasing throughout the time of leaching. The results from sequential extraction combined with element release, geochemical calculations, and Raman analysis suggest that S concentrations decreased due to decreasing sulfide oxidation rate, which led to gypsum dissolution. The result from this study shows that a limited amount of LKD, corresponding to 4% of the net neutralizing potential of the waste rock, can prevent the acceleration of sulfide oxidation and subsequent release of sulfate, metals, and metalloids but the quantity and long-term stability of secondary minerals formed needs to be evaluated and understood before this method can be applied at a larger scale.

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Section: Resultsmentioning

confidence: 99%

Prevention of sulfide oxidation in waste rock by the addition of lime kiln dust

Nyström

Kaasalainen

Alakangas

2019

Environ Sci Pollut Res

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“…Only in a single instance was the µ-XRD pattern interpreted as goethite, but this rim, interestingly, was significantly depleted in As. Higher content of As commonly causes the formation of amorphous Fe oxide phases at near-neutral conditions or scorodite (FeAsO 4 ·2H 2 O) at acidic conditions (Courtin-Nomadel et al 2010, Murciego et al 2011, Lalinská-Voleková et al 2012). …”

Section: Poorly Crystalline Fe Oxides and Goethite (α-Feooh)mentioning

confidence: 99%

MINERALOGY OF NEUTRAL MINE DRAINAGE IN THE TAILINGS OF SIDERITE-Cu ORES IN EASTERN SLOVAKIA

et al. 2014

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This work presents the results of investigation of the primary minerals and their weathering products of two tailing ponds near the villages of Rudňany and Slovinky in eastern Slovakia. The tailings are near-neutral or slightly alkaline (pH = 7.2-8.8) because the acidity generated by the decomposition of the sulfides is efficiently neutralized by the abundant carbonate minerals. The most frequent primary gangue minerals are siderite, quartz, barite, and muscovite. The primary sulfide minerals in both tailing ponds are pyrite and chalcopyrite; less common are tetrahedrite and arsenopyrite. The most frequent secondary and tertiary (i.e., formed in the tailings, not in the oxidation zone of the deposits) minerals at both localities are iron oxides, either goethite or poorly crystalline hydrous ferric oxide. Other minerals (cuprite, malachite, delafossite; identified by X-ray microdiffraction or Raman spectroscopy) are minor or rare and occur only in Slovinky. The iron oxide minerals are enriched in a suite of elements, including Cu, Si, Ca, Zn, As, Mg, and Mn. The transformations of the poorly crystalline hydrous ferric oxide to goethite and maturation of goethite is controlled by both highvalence tetrahedral cations (Si, As, P) and lower-valence octahedral cations (Cu), as shown by the measurements of the size of coherently diffracting domains in goethite and the chemical composition of goethite. The iron oxide minerals, by virtue of their adsorption capacity, prevent separate minerals of many metals and metalloids (Cu, Ca, As, Sb) from nucleating and growing, and therefore control the entire neutral mine drainage (NMD) system. Geochemical modeling of the discharged waters shows that all common Cu and ferric arsenate minerals are strongly undersaturated, confirming the central role of iron oxide phases in the NMD system.

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“…The Malé Karpaty Mts. are known as an old mining site where several sources of arsenic and antimony contamination might be found [2,7,[23][24]. These mining sites are shown in Fig.…”

Section: Description Of the Studied Locationsmentioning

confidence: 99%

“…Two Sb deposits bound to this mineralization were exploited: Pernek and Kolársky Vrch (1790-1992) near Sirková adit [2]. The most intensive mining period was until 1940, and 15,000 tons of Sb was recovered [7].…”

mentioning

confidence: 99%

“…The metals content in the surrounding area strongly depends on geological bedding and anthropogenic activities in the location and markedly reflects in biota. The aim of this study was to compare the levels of selected (semi)metals -both toxic (As, Cd, Pb, Sb) and biogenic (Cu, Zn) in the leaves of the following plant species: European The map of selected mines in the studied area of Malé Karpaty Mts., mainly with As, Sb, Pb, and Zn occurrence [2,5,7,22]; the names of mines and occurrence of minerals: 1 -Sirková (Sb-As minerals); 2 -Budúcnosť (Sb-As minerals); 3 -Pyritová (Sb-As minerals); 4 -Nová Alexander (SbAs minerals); 5 -Antimónová (Sb-As minerals); 6 -Medzipatrová (Sb-As minerals); 7 -unnamed adit No. 6 (Pb and Zn minerals); 8 -Mikuláš (Pb and Zn minerals); 9 -Čmele II (pyrite -FeS 2 , Sb minerals); 10 -Florián (pyrite, Sb minerals); 11 -Valentín (pyrite, Sb minerals); 12 -unnamed adit No.…”

mentioning

confidence: 99%

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