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Location: 6.4 km S from Çayeli, Turkiye
Madenli Beldesi, 53200 MadenliCayeliTurkiye53200
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Çayeli is a Cretaceous-age volcanogenic massive sulphide deposit that has a known strike length of over 600 metres, extends to a depth of at least 600 metres and varies in thickness from a few metres to 80 metres, averaging about 20 metres. The average dip is 65° to the north northwest. The deposit is at the contact between altered footwall felsic volcanic flows and pyroclastic and hanging wall mafic volcanic rocks. It consists of massive and stockwork sulphides. The mineralization includes pyrite, chalcopyrite and sphalerite and smaller amounts of galena, dolomite and barite. The massive sulphide ore is classified into yellow ore, which is copper-rich and zinc-poor; black ore, which is zinc-rich and copper-poor; and clastic ore, which contains copper, zinc and precious metals. In this ore, the sphalerite contains intergrowths and inclusions of chalcopyrite and requires batch processing through the mill. Ore types which contain either secondary copper minerals or bornite are segregated and processed separately. Stockwork ore, containing pyrite and chalcopyrite in veins, occurs stratigraphically below the massive sulphide ores.
