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dc.contributor.authorKarayiğit, Ali İhsan
dc.contributor.authorBircan, Cüneyt
dc.contributor.authorMastalerz, Maria
dc.contributor.authorOskay, R. Görkem
dc.contributor.authorQuerol, Xavier
dc.contributor.authorLieberman, Nir Roy
dc.contributor.authorTürkmen, İbrahim
dc.date.accessioned2019-10-01T06:55:09Z
dc.date.available2019-10-01T06:55:09Z
dc.date.issued2017en_US
dc.identifier.issn0166-5162
dc.identifier.issn1872-7840
dc.identifier.urihttps://doi.org/10.1016/j.coal.2017.01.016
dc.identifier.urihttps://hdl.handle.net/20.500.12462/6520
dc.descriptionBircan, Cüneyt (Balikesir Author)en_US
dc.description.abstract"This study uses coal petrography, micro-FTIR, mineralogical, and geochemical analyses to determine the coal characteristics and controlling factors of elemental enrichments in the Isaalan coal (NW Turkey). The obtained data show that this subbituminous coal has a relatively low ash yield (avg. 19%), high hydrogen content (avg. 5.4%) and total S content (avg. 2.4%), on an air-dry basis. The maceral composition, along with micro-FTIR data on ulminite, suggests that lignin- and resin-rich vegetation was predominant The coal facies data imply the precursor peat was accumulating under, mesotrophic anoxic conditions where water level was high and fluctuating. The mineralogical composition of the bulk coal samples is composed mainly of quartz, pyrite, and clay minerals and lesser amounts of feldspars and carbonates. The statistical analysis of the bulk compositional data shows the major elements, including Al, Fe, K, Na, Mg, P, and the vast majority of trace elements, have inorganic affinity, whereas B presumably has organic affinity. The trace element concentrations are variable, and especially As and elements including B, Ba, Cr, Cs, Ni, Sb, and V are enriched compared to most world coals. The enrichments and distributions of Cr, Cs, Ni, and V were controlled by clastic inputs into a palaeomire, whereas As enrichments were controlled mainly by epigenetic and, to a lesser extent, syngenetic factors. Introduced SO4 and As-rich surface- and groundwater from the basin margin area, along with anoxic conditions in the palaeomire, resulted in syngenetic formation of As-bearing pyrite. The circulating intra-seam solutions later liberated As from syngenetically formed pyrite, which resulted in As- and Ni-rich overgrowths around framboidal and massive pyrite crystals. These solutions could also easily mobilize B that was absorbed by organic matter. Therefore, B enrichment appears to be related to epigenetic factors. Tectonic activities during coalification allowed hydrothermal solutions from neighbouring epithermal mineralisation to penetrate and circulate along with underground waters that leached overlying volcanoclastic-volcanic strata and supplied a number of elements to the studied coal. Thus, infilling As-bearing pyrite and silica were formed mainly during coalification. All these results suggest that As-enrichment in the study area is more likely a combination of epigenetic factors and syngenetic-detrital rather than volcanogenic contributions, as suggested earlier for some other Turkish coal deposits.en_US
dc.language.isoengen_US
dc.publisherElsevier Science Bven_US
dc.relation.isversionof10.1016/j.coal.2017.01.016en_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectSubbituminous Coalen_US
dc.subjectMicro-FTIRen_US
dc.subjectGeochemistryen_US
dc.subjectArsenicen_US
dc.subjectPalaeoenvironmenten_US
dc.titleCoal characteristics, elemental composition and modes of occurrence of some elements in the isaalan coal (Balikesir, NW Turkey)en_US
dc.typearticleen_US
dc.relation.journalInternational Journal of Coal Geologyen_US
dc.contributor.departmentMühendislik Fakültesien_US
dc.contributor.authorID0000-0002-6549-9899en_US
dc.contributor.authorID0000-0003-0748-8363en_US
dc.contributor.authorID0000-0003-0233-5827en_US
dc.identifier.volume172en_US
dc.identifier.startpage43en_US
dc.identifier.endpage59en_US
dc.relation.tubitakinfo:eu-repo/grantAgreement/TUBITAK/YDABCAG-113Y587en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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