Hydrothermal alteration products in the vicinity of the Ahirozu kaolin deposits, Mihaliccik-Eskisehir, Turkey

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dc.contributor.authorÖmero?lu Sayit, Işıl
dc.contributor.authorGünal Türkmeno?lu, Asuman
dc.contributor.authorSayın, Şıh Ali
dc.contributor.authorDemirci, Cengiz
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T09:17:05Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T09:17:05Z
dc.date.issued2018
dc.departmentMühendislik Fakültesi
dc.description.abstractThe mineralogy, texture and composition of rocks associated with the kaolin deposits in the Ahirozu-Hamidiye-Ucbasli area, SE of Mihaliccik, Eskisehir, Turkey, were investigated. In the study area, Triassic, blue-green schists and serpentinized ultramafic rocks are exposed. Kaolinization occurs at the contact between a Triassic granitic intrusion and metamorphic rocks. Textural and mineralogical characteristics were identified by X-ray diffraction (XRD) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) analyses. The effects of hydrothermal alteration on the whole-rock chemical composition were determined by inductively coupled plasma mass spectrometry (ICP-MS) analysis. Homogenization temperature (T-h, degrees C), salinity, (wt.% NaCl) and melting temperature (T-m, degrees C) were detected by fluid-inclusion analyses. The argillic alteration zone (Zone A) includes kaolinite, smectite, natroalunite and accessory pyrite, hematite and goethite. This paragenesis corresponds to a low-intermediate argillic alteration caused by fluids having neutral to acidic pH, at a temperature of <200 degrees C. The propylitic alteration zone (Zone B) is characterized by epidote, chlorite, illite and pyrite and was caused by fluids with a neutral pH and a temperature of >250 degrees C. The rocks in Zone C are mainly silicified and represent sinter formation in the study area. The rocks in the kaolin deposit are depleted in Rb, Pb and Yand enriched in Cs, U and Sr, and represent the products of epithermal hydrothermal alteration of granitic intrusions emplaced in a volcanic arc.
dc.description.sponsorshipMETU Scientific Research Funds [BAP-07.02.2012.101, BAP-03-09-2013-001]
dc.description.sponsorshipThis research is supported by METU Scientific Research Funds BAP-07.02.2012.101 and BAP-03-09-2013-001. The authors are grateful to Banu Parlak (MTA) for performing the fluid-inclusion analysis and to the METU Central Laboratory for conducting SEM-EDX analyses. They are also grateful to the anonymous reviewers for their help in improving the manuscript and to W.D. Huff for grammar corrections and suggestions on the manuscript.
dc.identifier.doi10.1180/clm.2018.19
dc.identifier.endpage303en_US
dc.identifier.issn0009-8558
dc.identifier.issn1471-8030
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage289en_US
dc.identifier.urihttps://doi.org/10.1180/clm.2018.19
dc.identifier.urihttps://hdl.handle.net/20.500.12451/4699
dc.identifier.volume53en_US
dc.identifier.wosWOS:000451796400012
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMineralogical SOC
dc.relation.ispartofClay Minerals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjecthydrothermal Alteration
dc.subjectKaolin Deposit
dc.subjectArgillic Alteration
dc.subjectPropylitic Alteration
dc.subjectEpithermal Deposit
dc.subjectAhirozu
dc.subjectTurkey
dc.titleHydrothermal alteration products in the vicinity of the Ahirozu kaolin deposits, Mihaliccik-Eskisehir, Turkey
dc.typeArticle

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