Derbent-Eymi̇r Bölgesi̇nde (Yozgat, Türki̇ye) Artova Ofi̇yoli̇ti̇k Karmaşiğindaki̇ Manganez Yataklarindan Mi̇neraloji̇k Bulgular

Abstract

The Artova Ophiolitic Complex (AOC), which formed in association with Alpine Ophiolites, is exposed in the NE part of central Anatolia, in the interior of the central Black Sea region and within the borders of Çorum and Yozgat. The Derbent-Eymir manganese-oxide deposit under investigation occurs within this ophiolitic complex. The mineral association in Derbent ore is composed chiefl y of pyrolusite, manganite and lesser amounts of ramsdellite, magnetite and goethite. Calcite is the main gangue mineral. The mineral association in Eymir ore is represented by pyrolusite, braunite, neltnerite, jacobsite, psilomelane and trace amount of limonite accompanied by some gangue minerals such as quartz and calcite. Electron microprobe analysis was carried out on pyrolusite, braunite and psilomelane minerals. While pyrolusite from Eymir has higher Si, Al, Mn and Ca, pyrolusite from the Derbent ore has lower Fe, K and Ba contents. Pyrolusite in the Eymir ore has higher Si, Al, Mn and

Sarıhıdır manganese mineralization related to travertine, Central Anatolian Volcanic Province, Turkey

“…In the Sarıhıdır mineralization, total REE values are very low, which supports their hydrothermal formation (Table 3). LREE>HREE is an indicator that mineralization occurred linked to hydrothermal solutions (Fitzgerald & Gillis, 2006;Oksuz, 2011Oksuz, , 2018.…”

“…In the literature, different types of Mn deposits, mostly marine, are mentioned (Kunzendorf et al, 1983;Maghfouri et al, 2017;Oksuz, 2011Oksuz, , 2018Yamaoka et al, 2017). However, there is no detailed study related to Mn deposits associated with travertine formations in a continental environment like the Sarıhıdır Mn mineralization.…”