Aksaray Thracian about the killing of Proterius of Alexandria in 458) at the Council of Chalcedon in 451, Alexander at a council called by Patriarch Menas of Constantinople in 536, and Conon at the Trullan Council of 692. No longer a residential bishopric, Colonia in Cappadocia is today listed by the Catholic Church as a titular see. Colonia is also a titular metropolis in Turkey of the Ecumenical Patriarchate of Constantinople. The town was also prosperous during Ottoman times due to its proximity to Tuz Gölü (Lake Tuz), which was a primary source of salt for Anatolia. The region came under
Tuz resmi were granted the title "tuz emini". Tuz resmi was usually arranged through the muqata'ah system; the government would grant a salt-producing resource to a contractor or tax-farmer, who would then be obliged to return a proportion of salt production (or the cash equivalent) to government coffers. There was usually a separate muqata'ah for each salt-mine. During the Tanzimat reforms, the Ottoman government took over complete control of salt production, and prices were fixed; in 1879, the salt industry was given to bankers as collateral against government borrowing, and then in 1881 it was made part of the Regie Company which