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

Sayit I. O. , GÜNAL TÜRKMENOĞLU A., Sayin S. A. , Demirci C.

CLAY MINERALS, vol.53, no.2, pp.289-303, 2018 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.1180/clm.2018.19
  • Journal Name: CLAY MINERALS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.289-303
  • Keywords: hydrothermal alteration, kaolin deposit, argillic alteration, propylitic alteration, epithermal deposit, Ahirozu, Turkey, ALUNITE DEPOSITS, GEOTHERMAL SYSTEMS, GENESIS, ROCKS, GOLD, HALLOYSITE, MINERALOGY, VOLCANICS, ORIGIN


The 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.