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| 005 | 20231030040818.0 | ||
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| 200 | 1 |
_aNature of tonsteins in the Azeisk deposit of the Irkutsk Coal Basin (Siberia, Russia) _fS. I. Arbuzov [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 330 | _aIn this paper data on the mineral and chemical composition of tonsteins from the Jurassic Azeisk deposit located in the Irkutsk Basin (South Siberia, Russia) are presented. The mineral composition includes kaolinite (87–89%); quartz (3.0–4.0%), cristobalite (4.9–5.3%), illite (1.9–2.1%) and feldspar (1.0–2.0%). Accessory minerals comprise zircon, monazite, uranium oxides, native minerals (gold, silver, nickel, zinc, tungsten, and silicon), sulfides and intermetallic compounds. The tonsteins and coals of the Azeisk deposit have high concentrations of REE, Y, Zr, Hf, U, Th, Ta, Sn, Ga, Cu, Pb, Se, Hg, Sb, and Te. The highest concentrations of these elements were found at the contact with coals. The enrichment of the coal with lithophile rare metals is possibly caused by their leaching from the tonsteins. The accumulation of these trace elements is a characteristic feature in coals both above and below the tonsteins. The width of the enrichment in the coal zone depends on the properties of chemical elements and features of the coal properties and character of interaction between the coals and tonsteins. The authors verify the pyroclastic nature of the initial matter of the tonsteins of the Azeisk deposit. Mineralogical and geochemical data from the tonsteins suggest a felsic (rhyolite) composition for the original volcanic matter that was altered in the aggressive acidic environments of the peat bogs. As a result of the burial of this material in a paleo-peatland some of the elements typical of felsic pyroclastics accumulated. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tInternational Journal of Coal Geology | ||
| 463 |
_tVol. 153 _v[P. 99-111] _d2016 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aArbuzov _bS. I. _cRussian geologist and geochemist _cProfessor of Tomsk Polytechnic University, Doctor of geological and mineralogical sciences _f1959- _gSergey Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\29713 |
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| 701 | 1 |
_aMezhibor _bA. M. _cgeoecology, specialist in the field of environmental Geochemistry _cassociate Professor of Tomsk Polytechnic University _f1982- _gAntonina Mikhailovna _2stltpush _3(RuTPU)RU\TPU\pers\32563 |
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| 701 | 1 |
_aSpears _bD. A. _gDavid Alan |
|
| 701 | 1 |
_aIljenok (Il'enok) _bS. S. _cgeochemist _cassistant Professor of Tomsk Polytechnic Institute _f1986- _gSergey Sergeevich _2stltpush _3(RuTPU)RU\TPU\pers\35195 |
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| 701 | 1 |
_aShaldybin _bM. V. _cgeologist _cAssociate Professor of Tomsk Polytechnic University, Candidate of geological and mineralogical sciences _f1969- _gMikhail Viktorovich _2stltpush _3(RuTPU)RU\TPU\pers\37010 |
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| 701 | 1 |
_aTkacheva _bE. V. _cgeologist _cengineer of Tomsk Polytechnic University _f1988- _gEvgeniya Vladimirovna _2stltpush _3(RuTPU)RU\TPU\pers\46420 |
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| 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 |
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_aRU _b63413507 _c20200424 _gRCR |
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| 856 | 4 | _uhttp://dx.doi.org/10.1016/j.coal.2015.12.001 | |
| 942 | _cCF | ||