Abstract
Turkey hosts essential bauxite deposits, typically of the karstic-type. The most economically important bauxite deposits of Turkey form in the Seydisehir-Akseki region of the central Taurides Mountains. The Mortas and Dogankuzu deposits are the most important deposits in that region. The bauxite beds contain boehmite, hematite, rutile, smectite, quartz, diaspore, calcite, pyrite, marcasite and goethite. Brown to red-colored bauxite minerals are massive, oolitic – pisolitic textured. The Seydisehir schists could be possible parent rocks of bauxites, and have unearthed acidic source (mostly granite) with hornblende and plagioclase minerals. The schists were compositionally mature with minimal alkali feldspar sediments. The Mortas deposit is 400 m long and up to 40 m thick; it averages 10 m thick. It has about 5 million tons of ore reserves, with ~50 percent Al2O3. The Dogankuzu bauxite deposit is situated 2 km southwest of the Mortas deposit, with 14.9 million metric tons of ore at 61 percent Al2O3. The Dogankuzu ore was deposited on a fault-controlled karst surface of Cenomanian limestone succession, which was overlain by 5- to 10-cm-thick Santonian limestones. The bauxite has been mined by the Seydisehir aluminum factory, which was founded in 1973, and privatized in 2005. The plant is capable to produce 65.000 ton liquid aluminum per year, around 15% of Turkey’s Aluminum demand.
Highlights
The study area is located in the Tauride Belt of southern Turkey (Fig.1), at where six bauxite provinces are located
The Seydisehir – Akseki bauxite province contains too many (>100 occurrences) Mediterranean type, paleo-karst bauxite deposits, only a few are large enough to be of value (Fig.1, 2)
GEOLOGIC SETTING In the central Taurides Mountains, there are major autochthonous and allochthonous tectonostratigraphic units
Summary
The study area is located in the Tauride Belt of southern Turkey (Fig.1), at where six bauxite provinces are located. Mineralizations formed at the crest of the Taurides Mountains more than 1,500 m above sea level, and have roughly northsouth trend, with thickness varying from 1 to 40 m They are often cut by various normal faults. Ore was deposited on fault-controlled karst surface of Cenomanian limestone succession, and overlain by 5- to 10-cm-thick Santonian limestone [3]. The ore from both deposits is transported to the Seydisehir aluminum factory, which was established in 1973, put into operation at full capacity in 1977
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