Emin Çiftçi

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• PhD
• Chair at Istanbul Technical University

The Cerattepe article can be downloaded freely from the link below by October 22, 2024 Your personalized Share Link: https://authors.elsevier.com/a/1jiAk274To6oW

This study focuses on the evolution of the Kirazlıyayla volcanic-hosted Zn-Pb ± Cu epi-mesothermal vein-type deposit and its relationship to volcanism in NW Turkey. The Kirazlıyayla area has an extensive variety of geological formations, including the Karakaya, Yenipazar, Fındıcak, Sarısu Volcanics, and Mesudiye. The mineralization that formed with...

Central Pontides can be defined as a province for volcanogenic massive sulfide (VMS) deposit following the discoveries in recent years. Karaburun and Sarıseki VMS mineralizations are located within the Jurassic metamorphic-subduction accretionary complex in the Central Pontides. Mineralizations are related to deep-sea sediments and sill/dykes in ma...

Mine tailings left at abandoned sulfide mine sites can seriously threaten surrounding ecosystems and cause soil and water pollution. This study focused on determining the geochemical processes and mineral phases controlling metal cycling in an abandoned copper mine site (Kuvarshan, Artvin, northeastern Turkey). Geochemical and mineralogical charact...

Pontide Orogenic Belt represents the northern Anatolian segment of the Alpine-Himalayan Belt. Amalgamation of Strandja Massif, İstanbul and Sakarya Zones, seperated from each other with oceans, consitute this belt. Central Pontides is located in central part of the Sakarya Zone. The basement is composed of Variscan metamorphic units, Paleozoic gran...

Hydrothermal solutions related to magmatic intrusions that occurred during the Oligo-Miocene resulted in advanced multi-stage alterations and, to varying degrees, kaolinization over a wide area of the Biga Peninsula. The most important formations in these kaolin deposits occurred along the NE–SW-trending Çan-Etili-Bayramiç fault zone. The Bahadırlı...

17th International Clay Conference 2022 - Abstract Book

A significant number of VMS deposits occur within Eastern Pontide Orogenic belt of Türkiye. The Geochemical analyses of pyrite, sphalerite, and fahlores minerals from the Cerattepe Cu-Au (±Zn) deposit resulted relatively high contents of Cu, As, Co and low Pb, Zn Ni in pyrites; high value of Pb, Fe, and Au in sphalerites. However, fahlores have low...

Kirazliyayla zinc-lead ore deposit is located in the NW of Turkey. The main objective of the study is to recognize the distribution patterns of elements to better understand the deposit, establish an optimized pattern in exploration programs and finally detect the promising area. From 65 boreholes 4357 samples were analyzed by ICP-OES. The data ana...

The Terziali gold mineralization is located within the Central Anatolian Crystalline Complex and represents one of the significant gold occurrences in central Turkey. This gold mineralization is emplaced along the Demirli Thrust Zone striking northwest-southeast with a southwest dip. The hanging wall of this thrust zone consists of Carboniferous me...

The central part of the Pontide Orogenic Belt, located in northern Anatolia, is a segment of the Alpine-Himalayan orogeny. Çangaldağ Metamorphic Complex (CMC) occurs within this segment which consists of ensimatic island arc volcanics and deep sea sediments which occasionally cut cross by mafic sills/dykes. They were exposed to metamorphism under t...

The Eastern Pontide Orogenic belt of Turkey host significant number of VMS deposits. The Cerattepe deposit is separated from the other deposits, with its gold-rich gossan zone. The origin of mineralization was studied by ore microscopy, EPMA and stable isotope analysis. The mineral paragenesis of the deposit, consists of pyrite, sphalerite, marcasi...

Central Pontides is very interesting region with its geological characteristics and hosting different kind of copper deposits. This region has a complex structure with Permo-Carboniferous meta-granitoids and metamorphites at the bottom. The wide area where the basement is overlained by Middle Jurassic and Albian-Turonian thrust-accretion complexes...

Modern‐day Çorum is the homeland of the Hatti people; the culture that went on to form the Hittite Empire. Resuloğlu, which dates back to the latter half of the Early Bronze Age (ca. 2500/2400–2100/2050 BC), is a unique Hatti site with its settlement and cemetery areas systematically excavated. Among thousands of beads found at Resuloğlu, various m...

In this study, general characteristics of soils formed on different parent materials in three different regions of Niğde province, their relationship with lithological units and the extent to which they are suitable for agricultural purposes were determined. Physical and chemical analysis values of rock and soil samples were used to reveal the rela...

The Cerattepe mine, one of the volcanogenic massive sulfide deposits in northeastern Turkey, is hosted within the late Cretaceous volcanic, intrusive and sedimentary rocks. Deposit’s main ore body contains high-grade massive copper sulfides and a gold-silver and barium rich oxide zone, characterized by dense alteration stages, is situated on top of...

There are 6 semi-precious gemstones in Turkey that are the most significant in terms of abundance and authenticity. These include smoky quartz, blue chalcedony, chrysoprase (aka Şenkaya emerald), diaspore (aka sultanite/zultanite), sepiolite (aka meerschaum/Eskişehirstone), and jet (aka Oltustone). The smoky quartz occurs in the south of Büyük Mend...

The Kirazlıyayla deposit is one of Pb-Zn (±Cu) deposits associated with andesitic volcanism cutting through the metamophics of Karakaya complex. It is a structurally controlled, vein-stockwork style, mesothermal ore deposit. Replacement, brecciation, vein/veinlets, carries, sea-island, and dissemination textures were identified. Pyrite, sphalerite,...

Çorak and Taç, two nearby mineralizations, are located in the eastern black sea region, which is one of the most productive metallogenic belts of Turkey. It is characterized by a great number of Kuroko-type volcanogenic massive sulfide deposits as well as vein-type polymetallic deposits, porphyry and epithermal precious metal deposits. Subject neig...

Located in the north of Anatolia, the Pontide Orogenic Belt hosts Turkey’s most important volcanogenic massive sulfide (VMS) deposits. Studies completed in the last ten years have discovered new massive sulfide deposits in the Central Pontide zone. The Zeybek VMS deposit is one of these newly-discovered deposits found in the Central Pontides. This...

In this study, efficacy and some characteris-tics of the local diatomaceous earth (DE) were investigated against been weevils [Acan-thoscelides obtectus (Say) (Col.: Bruchidae)] on chickpeas (Cicer arientum L.) under laboratory conditions. In the experiments, Turco000, Tur-co004, and Turco020 derived from native sources (Ankara, Turkey), and Protec...

Volcanogenic massive sulfide (VMS) deposits of Turkey occur in three tectonically distinct regions: (I) Kuroko-type deposits in the eastern Pontides Tectonic belt (EPTB); (II) Cyprus-type VMS deposits occur both in Küre area (Kastamonu) and along the Bitlis-Zagros Suture Zone (BZSZ), and (III) Besshi-type VMS deposits in the Hanönü–Taşköprü area (K...

Amerika Birleşik Devletleri'nin Georgia eyaletinin kuzeydoğusunda bulunan Elberton şehri, ülkenin granit blok taş endüstrisinin en önemli bölgelerinden biri olarak bilinmektedir. Böl-ge genelinde granit üretimi 45'den fazla faal durumdaki blok taş ocağında, jeolojik olarak "Appalaş" dağlarının güneyinde yeralan "İç Piedmont" lito-tektonik kuşağında...

Volcanogenic massive sulfide (VMS) deposits of Turkey occur in three tectonically distinct regions: (I) Kuroko type deposits in the eastern Pontides Tectonic belt (EPTB); (II) Cyprus- type VMS deposits occur both in Küre area (Kastamonu) and along the Bitlis-Zagros Suture Zone (BZSZ), and (III) Besshi-type VMS deposits in the Hanönü– Tasköprü area...

Hanönü massive sulfide (HMS) mineralization is the first sediment-hosted massive sulfide deposit discovered in Anatolia (Turkey). Containing more than 1% Cu and with more than 25 million tonnes reserve, the HMS mineralization is located in the Çangaldağ Metamorphic Complex (CMC) in the central Pontides within meta-volcaniclastic rocks with mafic si...

The Cerattepe mine, one of the volcanogenic massive sulphide deposits in northeastern Turkey, is located within the Upper Cretaceous volcanic, intrusive and sedimentary rocks. Deposit’s main ore body contains high-grade massive copper sulfides and a gold- silver and barium rich oxide zone, characterized by dense alteration stages, is situated on to...

The late Mesozoic-early Cenozoic geologic evolutionary history of the Central Anatolian Crystalline Complex involved episodes of deformation, metamorphism, magmatism and witnessed several episodes of collision during late Cretaceous to early Paleocene times. The Terziali project area is located at 20 km northwest of Kırşehir city center, Central An...

Acid mine drainage potential of flotation slurry from a tailing dam in an active copper mine (Murgul) in Turkey was evaluated using an integrated approach combining static and kinetics tests, mineralogical and geochemical characterization and geochemical modeling. Acid mine drainage potential of the tailing waste was determined by acid base account...

Mining activities in many countries around the world pose serious pressure on surrounding water bodies. This study assesses the environmental impact of Murgul mine, one of the longest operated open-pit copper mines in Turkey. A long-term monitoring study was conducted on the surrounding surface water bodies to assess the degree of deterioration/rec...

The study is based on peneplains in which exogenic residual formations occur in the Golcuk district (SW Turkey). Many fractionation products such as phonolite, trachyte, latite are defined in the study field. Mainly these products are characterized as mantle-derived potassic and ultrapotassic rocks. Over the far east part of the field, the lampro...

This study deals with natural radioactivity levels of the ten most important commercial granites from various districts currently being exploited as dimension stone in Turkey. Determining the level of radioactivity is important for human health, particularly for indoor use of granites. This study shows that the relationship between the natural radi...

This study investigates the concentration and in-situ enrichment mechanisms of both heavy and light rare earth elements in exogenic process-related residual formations from the Bucak district of Isparta, SW, Turkey. Late Pliocene silica undersaturated lamproites, dolomitic clayey limestones, ophiolitic rocks, and their weathering products such as r...

Orta Pontidler, İzmir-Ankara-Erzincan kenet zonu ve Karadeniz arasında uzanan Pontid orojenik kuşağının merkez kısmını temsil eder. Kastamonu ve yakın çevresi, İstanbul ve Sakarya zonlarının birleşerek Orta Pontidleri oluşturduğu kompleks bir jeolojiye sahiptir. Bu zon, Doğu Pontidler'de alışılagelmiş Kuroko-tipi polimetalik Cu yataklarının dışında...

Most of the massive sulfide deposits (VMS) occurring from Precambrian to Cenozoic throughout the world have been subsequently metamorphosed at various grades. Thus, all the original textures have been either completely destroyed or strongly modified. However, there are a very few examples, rather younger deposits such as late Cretaceous Turkish VMS...

Marble, which is exploited for micronized calcite production in Nigde area (South Central Turkey), occurs in the Upper Cretaceous Gümüşler, Aşıgediği, and Kaleboynu Formations of the Nigde Massif. Although there are a few marble producing quarries in the area, it is long been known that the marbles of this area are generally highly fractured and do...

Natural sepiolite minerals and their γ-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to clusters of Fe3+ ions. The paramagnetic centers produced by γ-irradiation of natural sepiolite minerals were attributed to the ĊH3 a...

Arsenic is one of the most deleterious trace elements due essentially to its carcinogenicity resulting in the development of internal malignancies and skin cancer. In this study, arsenic concentrations of soils and stream waters in an area where the world class borate deposits of Turkey occur are presented. Soil and stream water samples were collec...

1. Introduction The study area (Figure 1) occurs in the Eastern Pontides, one of the major tectonic units of Turkey (Ketin 1966; Ketin & Canitez 1972). This belt is about 500 km long and 100 km wide at most and has a very complex volcanic island arc structure that evolved during Kimmeridgian-Alpine orogeny. Lithologic units of the region are produc...

Alkali- and Ca-rich smectites occur in association with Neogene lacustrine sedimentary rocks and high-K calc-alkaline volcanic rocks with compositions ranging from andesite to rhyolite in western Anatolia (Turkey). Major clay occurrences are associated predominantly with the Foça and Akçaköy ignimbrites and with the ignimbrites within the Rahmanlar...

Characterization of the Kolsuz clays in the Central Anatolian Region (Ulukisla-Nigde-Turkey) were carried out using the spectroscopic techniques and results were interpreted in terms of petroleum exploration. The DTA-TGA measurements have been carried out for determinations of thermal behaviour of the clay samples. The FTIR spectra of clays known a...

The Kotana prospect is located about 30 km south of Giresun (NE Turkey). The ore mineralization is a Feskarn occurring within the low-grade pre-Lower Jurassic Pi{dotless}narlar metamorphics, consisting of marble-phyllite intruded by the Upper Cretaceous-Eocene Aksu biotite monzogranite. The principal primary ore minerals include pyrrhotite and magn...

A number of hydrothermal, epigenetic, carbonate-hosted vein type Pb-Zn and barite-Pb-Zn deposits are found in the Central Tauride Mountains of Turkey. The Central Tauride Belt typically exhibits vein type Pb-Zn mineralizations that are currently productive and have been mined since historical times. These deposits are characterized by sphalerite, g...

Characterization of Aksaray-Guzelyurt clays in the Central Anatolian region were carried out and the clay minerals used in the building stones and their effects were evaluated. The clay samples taken from Guzelyurt area located to the southeast of the city of Aksaray were investigated employing the spectroscopic methods. The differential thermal an...

A recent investigation of sphalerite from Akoluk deposit, Ordu, NE Turkey, revealed the possible presence of a new activator element in the sphalerite structure. The sample was studied under a reflected light microscope coupled with a cold-stage cathodoluminescence (CL) system which revealed a unique banding in the sphalerite. The same sample was s...

A large number of volcanogenic massive sulfide (VMS) deposits are associated with Late Cretaceous to Eocene arc-like volcanic rocks in the eastern Pontides of NE Turkey. Cu isotope studies on thirteen VMS and two vein deposits were undertaken to examine the nature of copper isotope variations and to compare these with other VMS and black smoker dep...

Very unusual rocks consisting of natrolite (>95 vol.%) ± pargasite (2 in the metasomatic reactions, consistent with the presence of calcite in the alteration zones. Zone 5 consists essentially of brecciated serpentinite with numerous hydrothermal quartz veins and calcite veins. Whole-rock compositions document an increase in Na2O, Al2O3, and H2O fr...

The Oligocene Çukurbag Formation, deposited within a long narrow basin surrounded by the Aladag, Ulukisla, and Nigde metamorphic Groups, consists of conglomerate, sandstone, siltstone, mudstone, marl, mudstone-gypsum successions. A number of analytical methods including morphological, mineralogical, and chemical techniques were employed to investig...

Turkey is one of the countries with significant marble reserves in the world. Economically most important marble quarries in massifs are in the cities of Kırklareli, Ankara. Travertine and onyx deposits are also significant in state's economy and found in Manisa, Afyon, Denizli, Konya, Burdur, Sivas, Nigde, and Çankırı. Nigde-white marbles crop out...

In this study, gamma-irradiated natural diatomite minerals were investigated by electron paramagnetic resonance (EPR) spectroscopy at ambient temperature. The paramagnetic radicals produced by γ-irradiation in natural diatomite minerals at ambient temperature were attributed to , organic (probably, humic or fluvic acid), and free radicals. These ce...

In this study, gamma-irradiated marine mollusc (Venus sp.) fossils were investigated by electron paramagnetic resonance (EPR) at ambient temperature. Powder X-ray diffraction technique indicates that the Venus sp. fossils were made mainly of CaCO3. Before gamma-irradiation, the EPR lines of the powder of fossil samples showed the existence of Mn2+...

Oltu stone

Heteroepitaxial BaTiO3 thin films were deposited in an aqueous solution under hydrothermal conditions on single crystal substrates of (100) SrTiO3 and (012) LaAlO3. The reactants consisted of fine TiO2 particles in a strongly alkaline solution of Ba(OH)2 at a temperature of 150C. The growth of the films was studied by atomic force microscopy, high...

Crystalline BaTiO3 powders were precipitated by reacting fine TiO2 particles with a strongly alkaline solution of Ba(OH)2 under hydrothermal conditions at 80C to 240C. The characteristics of the powders were investigated by X-ray diffraction, transmission electron microscopy, thermal analysis and atomic emission spectroscopy. For a fixed reaction t...

Thesis (Ph. D.)--University of Missouri--Rolla, 2000.