Türkiye Jeoloji Bülteni

Pb-Zn Occurrences of the Göktepe (Ermenek-Konya) District

Abstract: The Alanya Unit, Muzvadi complex slice and the Aladağ Unit occur in the study area which are formedin different environmental conditions- The ore occurrences are divided in two groups on the base of their mineralparagenesis, alterations, stratigraphic and geographic positions- These are the Northern Pb-Zn occurrences (Sarıpınar) and the Southern Pb-Zn occurrences (Muzvadi-Berem).The Northern occurrences are found in the Mizzia bearing limestones of Upper Permian Dumlugöze Formation andin the oolitic-stromatolitic [limestones of Lower-Middle Triassic Haydar Formation and also along the contacts of bothformations. The ores occur mostly as veins and in some cases as stratabound lensesThe Southern occurrences in the Muzvadi area are found in the Jurassic Akpmar dolomitic limestones as stockworktype mineralization. In the Berem area, however, the mineralization is situated in the brecciated and fractured zonesof Jurassic, Upper Triassic and Permian formations of the Aladağ Unit.The ores of the Southern part do not contain fluorite minerals while the ores of the Northern part are rich in fluorite.The ore deposits consist of primary sulfide minerals of sphalerite, galena, pyrite, marcasite, and secondary mineralsof dolomite, fluorite, calcite, quartz, barite, smithsonite, cerussite, hydrozincite and limonite. The Pb-Zn deposits arecommonly related to the, NW-SE and NE-SW striking tectonic lines, and were formed after the emplacement of theabove mentioned unitsA magmatic-hydrothermal origin for the Pb-Zn mineralization seems unlikely. Field and laboratuary observationsindicate an epigenetic character for the lead-zinc deposits- The lead-zinc ores were formed either by the formationwaters, by the concentration of ore-forming elements which were primarily dispersed in sedimentary rocks- bymeteoric waters, ground waters. These concentrated elements then migrated and precicpitated in the fracturedzones and open spaces of the various units.