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Bulletin of the Mineral Research and Exploration Bull. Min. Res. Exp. (2019) 158: 265-289 BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION Foreign Edition 2019 158 ISSN : 0026-4563 E-ISSN : 2651-3048 CONTENTS Tectonostratigraphic characteristics of the area between Çayeli (Rize) and øspir (Erzurum) ............................................øsmet ALAN, Veli BALCI, Halil KESKøN, øbrahim ALTUN, Nevzat BÖKE, Hünkar DEMøRBAö, Sedat ARMAN, Bulletin of the Mineral .................................................................................Hasan ELøBOL, Mustafa SOYAKøL, Alican KOP and Nurullah HANøLÇø / Research Article 1 Structural properties and tectonic signi¿ cance of a shear zone discovered within the Tauride orogen near Alanya, SW Turkey ........................................................................................................................................................................ Volkan ÖZAKSOY / Research Article 31 Selandian benthic foraminiferal assemblages of the southwestern Burdur (South of Lake YarÕúlÕ, Western Turkey) and some taxonomic revisions .................................................................................................................................................................................. ùükrü ACAR / Research Article 49 A new species of Nummulites Lamarck (Nummulitidae, Foraminiferida) from Central Turkey ........................................................................................................................................................................... Ali DEVECøLER / Research Article 121 Mineralogy, petrography and origin of hydrothermal alteration in Eocene magmatites in Central Anatolia (Sivas-Turkey) ................................................................................................................................Zeynel BAùIBÜYÜK and Hüseyin YALÇIN / Research Article 141 Geological, mineralogical and geochemical properties of the Da÷baúÕ skarn ores (AraklÕ-Trabzon, NE Turkey) ..............................................................................................................................................................................YÕlmaz DEMøR / Research Article 165 Evaluation of soil geochemistry data of Canca Area (Gümüúhane, Turkey) by means of Inverse Distance Weighting (IDW) and Kriging methods-preliminary ¿ ndings .......................................................................................................................................................................... Alaaddin VURAL / Research Article 195 Geochemical gharacteristics of Sabalan volcanic rocks in Northwestern Iran Research and Exploration Reza FAHIM GUILANY, Ali DARVISHZADEH, Seyed Jamal SHEIKHZAKARIAEE and Mansour VOSOUGHI ABEDINI / Research Article 217 Porphyry copper prospectivity mapping using fuzzy and fractal modeling in Sonajeel Area, NW Iran ...................................................................Zahra YAZDI, Alireza JAFARI RAD, Mehraj AGHAZADEH and Peyman AFZAL / Research Article 235 Factors controlling the paleo-sedimentary conditions of Çeltek oil shale, Sorgun-Yozgat/Turkey ........................................................................................................................................................Berna YAVUZ PEHLøVANLI / Research Article 251 Investigation of feldspar raw material potential of alkali feldspar granites and alkali feldspar syenites within Central Anatolia ............................................................................................................................ KÕymet DENøZ and Yusuf Ka÷an KADIOöLU / Research Article 265 The role of enhanced oil recovery in the upstream petroleum sector, a Turkey case ................................................................................................................................................................................ Emre ÖZGÜR / Research Article 291 The prediction of the expandability of clays using a ternary diagram ........................................................................................................................................................................ Ahmet ÖZGÜVEN / Research Article 299 Hydro-chemical and isotopic investigation of the øspendere mineral and thermal water springs, Malatya, Turkey .........................................................................................................Murat ÇELøKER, O. Faruk DURSUN and Mahmut FIRAT / Research Article 311 The use of electromagnetic and vertical electrical sounding methods in groundwater exploration ......................................................................................................................Ha¿ z MOHAMMED NAZIFI and Levent GÜLEN / Research Article 327 An approach to obtain the structural information from the electrical resistivity well logging curves ...................................................................................... Do÷an Can KARATAù, U÷ur ZAMAN and Emin U. ULUGERGERLø / Research Article 345 http://bulletin.mta.gov.tr Bulletin of the Mineral Research and Exploration Notes to the Authors .................................................................................................................... 353 Investigation of feldspar raw material potential of alkali feldspar granites and alkali feldspar syenites within Central Anatolia Kıymet DENİZa* and Yusuf Kağan KADIOĞLUb a Ankara University, Faculty of Engineering, Dept. Of Geological Engineering, 06830 Gölbaşı, Ankara, Turkey orcid.org. 0000-0003-3208-1354 b Earth Sciences Application and Research Center (YEBİM) of Ankara University, 06830 Gölbaşı, Ankara, Turkey orcid.org/0000-0002-7894-2220 Research Article Keywords: ABSTRACT Alkali feldspar granite, Alkali feldspar granites represent one of the major sources that provide raw materials for glass and syenite, orthoclase, albite, ceramics industry because of their high feldspar and quartz contents. In addition, also alkali feldspar raw material, glass, ceramic, Central Anatolia. syenites have potential to become raw material due to their high feldspar and feldspathoid contents. For this reason, alkali feldspar granites within Ağaçören Intrusive Suite (AIS) (Kalebalta, Yıldırımlı, Çerkezuşağı, Çatalçeşme, İbrahimbeyli, Deliler, Ekecik, Sipahiler, Camili, Yaylak, Namlıkışla), Hacılı Suite (Sarıhacılı), Cefalık, Behrekdağ, Terlemez and alkali feldspar syenites within Bayındır, Hamit and İdişdağı Suites are investigated. This study aims to investigate possible potential of alkali feldspar, plagioclase and quartz minerals within these rocks in glass and ceramic industry as raw materials. These rocks have high alkaline element content and relatively high Fe2O3 values compared to world granites. Fe2O3 values depend on mafi c and independent Fe minerals such as magnetite. Feldspars have high K2O (> %14) and low FeO (< %0.05), thus have high feldspar potential in ceramic industry. Alkali feldspar granites within AIS have promising potential as feldspar raw material, they have low reserve due to their Received Date: 22.06.2017 occurrence as dykes. Hacılı, Cefalık, Behrekdağ, Terlemez, Bayındır, Hamit and İdişdağı Suites have both Accepted Date: 05.12.2017 good quality and high reserve for feldspar potential. 1. Introduction observed in a small proportion in the products formed due to the depletion of iron (Fe) and magnesium Alkali feldspar granites represent rocks with the (Mg) in these melts. They are generally beige-pink highest content of quartz and alkali feldspar in the in color and have fi ne crystalline granular texture and granitoid family. In general, alkaline feldspar granites their thickness may range between cm to hundreds are mainly light-colored plutonic rocks containing of meters. Alkali feldspar granites are geologically quartz (20-60%) and alkali feldspar (40-80%) and formed in two forms. The most common formation is plagioclase amount ranging between 0-10%. Although the aplitic dykes consisting of the last residual products their felsic (light color) mineral contents are high, they of the granitoid magma and located along the articular have very low mafi c (dark color) mineral contents. direction of the main mass. The second formation In terms of their mineralogical composition, they is mostly the pre-collisional magmatism and partial can be divided into two groups as single and double melting event resulting from thrust faults in the upper micaceous. The proportion of mafi c minerals (biotite, crust. In addition, they may also form as lenses in etc.) in alkaline feldspar granites is generally below metamorphics in small thicknesses and distributions 5%. Such rocks represent products crystallized from due to high temperature. They may exhibit sharper residual silicon (Si) and potassium (K) rich melts in the and higher topography due to the mineral composition last stages of the magma. Therefore, mafi c minerals are they contain. Besides, they can be in alkaline feldspar * Corresponding author: Kıymet DENİZ, [email protected] https://dx.doi.org/10.19111/bulletinofmre.438197. 265 Bull. Min. Res. Exp. (2019) 158: 265-289 syenite composition as quartz-free or quartz poor Köprülü, 1997; Tayçu, 2009). Besides, they are more rocks can be crystallized in syenitoid magma-based susceptible to shrinkage during the cooking process products. Alkali feldspar syenites are light colored (Ryan, 1978). As seen, almost all of the feldspar group plutonic rocks, which contain high alkaline feldspar minerals can be used for different purposes in the (80-100%), plagioclase between 0-10%, and
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