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100			_a20171019a2017 k y0engy50 ba
101	0		_aeng
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181		0	_ai
182		0	_ab
200	1		_aRedistribution of elements between wastes and organic-bearing material in the dispersion train of gold-bearing sulfide tailings: Part I. Geochemistry and mineralogy _vElectronic resource _fB. Yu. Saryg-ool [et al.]
203			_aText _celectronic
300			_aTitle screen
320			_a[References: p. 470-471 (77 tit.)]
330			_aMigration and redistribution of elements during prolonged interaction of cyanide wastes with the underlying natural organic-bearing material have been studied in two ~ 40 cm deep cores that sample primary ores and their weathering profile (wastes I and II, respectively) in the dispersion train of gold-bearing sulfide tailings in Siberia. Analytical results of SR-XRF, whole-rock XRF, AAS, CHNS, and SEM measurements of core samples show high K, Sr, Ti, and Fe enrichments and correlation of P2O5 and Mn with LOI and Corg. Organic material interlayered or mixed with the wastes accumulates Cu, Zn, Se, Cd, Ag, Au, and Hg. The peat that contacts wastes II bears up to 3 wt.% Zn, 1000 g/t Se, 100 g/t Cd, and 8000 g/t Hg. New phases of Zn and Hg sulfides and Hg selenides occur as abundant sheaths over bacterial cells suggesting microbial mediation in sorption of elements. Organic-bearing material in the cores contains 10-30 g/t Au in 2-5 cm thick intervals, both within and outside the intervals rich in sulfides and selenides. Most of gold is invisible but reaches 345 g/t and forms 50 nm to 1.5 [mu]m Au0 particles in a thin 2-3 cm interval of organic remnants mixed with wastes I. Vertical and lateral infiltration of AMD waters in peat and oxidative dissolution of wastes within the dispersion train of the Ursk tailings lead to redistribution of elements and their accumulation by combined physical (material's permeability, direction AMD), chemical (complexing, sorption by organic matter and Fe(III) hydroxides) and biochemical (metabolism of sulfate-reducing bacteria) processes. The accumulated elements form secondary sulfates, and Hg and Zn selenides. The results provide insights into accumulation of elements in the early history of coal and black shale deposits and have implications for remediation of polluted areas and for secondary enrichment technologies.
333			_aРежим доступа: по договору с организацией-держателем ресурса
461			_tScience of The Total Environment
463			_tVol. 581-582 _v[P. 460-471] _d2017
610	1		_aэлектронный ресурс
610	1		_aтруды учёных ТПУ
610	1		_asulfide tailings
610	1		_aacid mine drainage (AMD)
610	1		_aorganic-bearing matter
610	1		_ahigh-resolution SR-XRF
610	1		_asorption
610	1		_amicrobially-mediated mineral formation
610	1		_aauthigenic minerals
610	1		_aсульфидные хвосты
610	1		_aдренажи
610	1		_aсорбция
610	1		_aаутигенные минералы
610	1		_aорганические вещества
701		1	_aSaryg-ool _bB. Yu. _gBagai-ool
701		1	_aMyagkaya _bI. N. _cgeochemist _cAssociate Professor of Tomsk Polytechnic University, Candidate of geological-mineralogical sciences _f1987- _gIrina Nikolaevna _2stltpush _3(RuTPU)RU\TPU\pers\36749
701		1	_aKirichenko _bI. S.
701		1	_aGustaitis _bM. A. _gMariya Alekseevna
701		1	_aShuvaeva _bO. V. _gOlga
701		1	_aZhmodik _bS. M. _gSergey Mikhaylovich
701		1	_aLazareva _bE. V. _gElena Vladimirovna
712	0	2	_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра геоэкологии и геохимии (ГЭГХ) _h259 _2stltpush _3(RuTPU)RU\TPU\col\18658
801		2	_aRU _b63413507 _c20171019 _gRCR
856	4		_uhttps://doi.org/10.1016/j.scitotenv.2016.12.154
942			_cCF