Characterization of the Sundikendagi deposit of moganite-rich, blue chalcedony nodules, Mayislar-Saricakaya (Eskisehir), Turkey

HATİPOĞLU M., Chamberlain S. C., KİBİCİ Y.

ORE GEOLOGY REVIEWS, vol.54, pp.127-137, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Review
  • Volume: 54
  • Publication Date: 2013
  • Doi Number: 10.1016/j.oregeorev.2013.03.004
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.127-137
  • Keywords: Turkish gem blue chalcedony, Sundikendagi deposit, Sedimentary chalcedony nodules, XRD, Oxygen isotopes, Moganite, Saricakaya Eskisehir (Turkey), MICROCRYSTALLINE QUARTZ, VANISHED EVAPORITES, CRYSTAL-STRUCTURE, SILICA POLYMORPH, SAKARYA ZONE, AGATE, WATER, CATHODOLUMINESCENCE, TESTAMENT, GROWTH
  • Dokuz Eylül University Affiliated: Yes


Blue chalcedony nodules have been mined from the Sundikendagi deposit in the Mayislar-Saricakaya (Eskisehir) region of north-central Turkey since ancient times; however, no modern geological study of this deposit has yet been published. Although ancient and current mining production have both taken place in an area of complex geology, our study and analyses of the deposit suggests a simple model of sedimentary deposition for its origin. The repeated episodes of tectonic activity, accompanied by brittle deformation, metamorphism, and hydrothermal activity, which characterize this part of the Anatolian Peninsula with its complex junction of tectonic plates, appear to have had little influence on the blue chalcedony nodules that make the deposit valuable other than perhaps to influence their trace-element composition.