Türkiye Jeoloji Bülteni

Geology of Northern of the Çanksaraylar Area (Şarkikaraağaç-Isparta) and Lead-Bearing Barite Deposits

Abstract: In the Şarkikaraağaç-Çarıksaraylar region, there have been found to be geological units of ages varyingfrom Paleozoic to Senozoic. Paleocoic aged the Sultandede formation at the basement is divided in  two membersnamed on the the Subaşı and Kocakızıl limestone members and is overlain with in angular unconformitiy by Mesozoicaged the Hacıalabaz formation. In the region, the age of the lateritized dolerites extending several kilometers in NW-SEdirection is thought to be Pre-Jurassic, and above all these units, Quaternary aged alluvium can be seen.Two kinds of barite mineralizations are observed in the north of the Çanksaraylar. One of these barite depositionis sülfide-bearing barite deposits. Seconds one is eluvial barite depositions developed from the first barite depositionwith external effects.The Çanksaraylar lead-bearing barite mineralization, is found within the metasediments, calcschists of theSultandede formation and the dolomites and limestones of the Subaşı member of the same formation, and in theboundaries of these lithologies as vein, lens and stratiform. The mineralizations deposited with various thickness (10-70cm) extend in NW-SE direction and dips towards SW and NE.During the ore deposition the occurrences of silicification, sideritization, ankeritization, dolomitization in thewall rocks of the lead-bearing barite deposits is a charecteristic feature associated with the mineralizations.Barite, galena, sphalerite, chalcopyrite, pyrite, tetrahedrite minerals are found as primary minerals in theparagenesis of the ore mineralizations. However, calcite, dolomite, siderite, ankerite and quartz are gangue minerals inthe deposits. In addition to these chalcocite-covellite, neodigenite, cerussite-anglesite, limonite, malachite and azuriteminerals are also found as secondary minerals occurred by the result of oxidation of sulfide-bearing minerals.The type of deposition, paragenesis, texture and alteration of the Çanksaraylar lead-bearing barite ores indicatedthat they are the hydrotermally deposited ores. However, second type barite deposition in the area is eluvial baritedeposits occurred from the first type barite deposition by the effect of external conditions.