Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK

Bullock, Liam A.; Parnell, John; Perez, Magali; Feldmann, Jörg; Armstrong, Joe

doi:10.3390/min7110229

Cited by 20 publications

(9 citation statements)

References 60 publications

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“…However, this electrolyte does not dissolve base metals which leads to accumulation of, e.g. gold, tellurium, selenium, bismuth, silver and other metals, along with various refractory components at the bottom of the electrolytic cells (George 2004; Bullock et al 2017). Remaining substrates from copper mining and refining may contain selenium at various concentrations ranging from 10–40%.…”

Section: Introductionmentioning

confidence: 99%

Fungal formation of selenium and tellurium nanoparticles

Liang

Perez

Nwoko

et al. 2019

Appl Microbiol Biotechnol

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The fungi Aureobasidium pullulans , Mortierella humilis , Trichoderma harzianum and Phoma glomerata were used to investigate the formation of selenium- and tellurium-containing nanoparticles during growth on selenium- and tellurium-containing media. Most organisms were able to grow on both selenium- and tellurium-containing media at concentrations of 1 mM resulting in extensive precipitation of elemental selenium and tellurium on fungal surfaces as observed by the red and black colour changes. Red or black deposits were confirmed as elemental selenium and tellurium, respectively. Selenium oxide and tellurium oxide were also found after growth of Trichoderma harzianum with 1 mM selenite and tellurite as well as the formation of elemental selenium and tellurium. The hyphal matrix provided nucleation sites for metalloid deposition with extracellular protein and extracellular polymeric substances localizing the resultant Se or Te nanoparticles. These findings are relevant to remedial treatments for selenium and tellurium and to novel approaches for selenium and tellurium biorecovery.

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Section: Introductionmentioning

confidence: 99%

Fungal formation of selenium and tellurium nanoparticles

Liang

Perez

Nwoko

et al. 2019

Appl Microbiol Biotechnol

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“…The increased concentration of metals (Fe, Cu, Ti, Co, Pb) is identified in mine waters around the area of the Parys Mountain copper deposit (England, North Wales) (Bullock, Parnell, Perez, Feldmann, & Armstrong, 2017). However, it should be noted that this paper does not discuss peculiarities of the increased metalconcentration zones formation and the technology of extraction.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Modeling the formation of high metal concentration zones in man-made deposits

Malanchuk¹,

Корнієнко²,

Malanchuk³

et al. 2018

Min. miner. depos.

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Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core.Methods. Analysis of the conditions determining metal-containing placers formation and of metal losses at mining and processing plants, considering the local terrain. Findings.It is proved that the minerals that are carried away from the separators at mining and processing plants are concentrated in the core, which contains up to 90% of heavy metals.Originality. The studies have determined the main factors and regularities governing the distribution of heavy metals in technogenic placers, which help identify their location and calculate parameters of high metal concentration zones in the body of a man-made deposit.Practical implications. The research has proved the possibility of using metal-containing technogenic placers, and finding the zones of maximum metal concentration on the basis of the established regularities. The authors have developed a mathematical model of the gradual formation of technogenic deposits with zones of heavy metals concentration in metal-containing waste.

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“…Suggesting these shales as elemental source is speculative, because we know practically nothing about their extent, composition, and mineralogy. However, black shales and coals are typically rich in framboidal pyrite and organic matter and are globally known as important carriers of a large suite of metals, including selenium [26][27][28][29][30][31].…”

Section: Sources Of Elementsmentioning

confidence: 99%

The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina

Grundmann¹,

Förster

2018

Minerals

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The Sierra de Cacheuta vein-type Se mineralization in the Mendoza Province predominantly consists of clausthalite, klockmannite, eskebornite, eucairite, and naumannite. These primary selenides formed in a fault zone, cutting through fine-grained trachytic host rock. Cross-sections perpendicular to the veinlets, polarized light microscopy, and scanning-electron microscopy, combined with electron-microprobe analysis, provide a record of the relationship between different crystallization and deformation events. Mineralization encompasses four episodes of fault formation (d1-d4): early zonal selenide crystallization (stage (I)); ductile deformation of the selenides (stage (II)); fault re-opening, fluid-mediated metal mobilization, metalliferous-fluid infiltration, and mineral precipitation (stage (III)); and subsequent alteration (stage (IV)). The Se vein originated from multiple injections of highly oxidized, metal-rich fluids. These low-T solutions (estimated max. temperature 100 • C, max. pressure 1 bar) possessed high to exceptionally high Se fugacities (log f Se2 between −14.5 and −11.2) that prevailed for most of the evolution of the deposit. The source of the Se and the accompanying metals (Cu, Ag, Pb, and Fe) is probably the neighboring bituminous shale. The deposition of Se minerals occurred when the oxidized metal-bearing solutions came in contact with a reductant, which caused the reduction of mobile selenate to immobile selenide or elemental Se. We identified several features that permit us to safely distinguish samples from Cacheuta from Argentinian Se deposits in the Province of La Rioja: (I) trachytic host rock fragments containing bitumen and TiO 2 pseudomorphs after titanomagnetite; (II) early Co-rich and Ni-poor krut'aite (Co < 6.7 wt %, Ni < 1.2 wt %) partly replaced by clausthalite, umangite, klockmannite, eskebornite, Ni-poor tyrrellite (Ni < 2.7 wt %), Ni-poor trogtalite (Ni < 1.2 wt %), and end-member krut'aite and petříčekite; (III) lack of calcite gangue; and (VI) Se-bearing alteration minerals comprising chalcomenite, molybdomenite, cobaltomenite, an unnamed Cu selenide (for which the ideal formula may be either Cu 2 Se 3 or Cu 5 Se 8 ), and possibly mandarinoite, mereheadite, orlandiite, and scotlandite as new species for this occurrence.

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Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK

Cited by 20 publications

References 60 publications

Fungal formation of selenium and tellurium nanoparticles

Fungal formation of selenium and tellurium nanoparticles

Modeling the formation of high metal concentration zones in man-made deposits

The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina

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