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The Raigan porphyry copper system is located in southeastern Iran (Kerman province), and is associated with diorite/granodiorite to quartz-monzonite of Miocene age that intruded Eocene volcano-sedimentary rocks. Copper mineralization was accompanied by mainly phyllic and lass potassic alteration. Field observations and petrographic studies demonstrate that emplacement of the Raigan stock took place in several intrusive pulses, each with associated hydrothermal activity. Molybdenum is not reported in any stage of h...

Detailed geological and drilling investigations have shown KayabaЕџД± deposit, located in Trabzon-Turkey, has a resource of 590 000 tons ore containing 2.2\% Cu and 1029 kg Au. The ore body shows the characteristics of both massive- and stockworktype sulfide mineralization. In this study, mineralogical analysis and flotation tests were performed to determine the degree of liberation of sulfides and the optimum grind time for the massive ore samples. Covellite and chalcocite were identified as the main copper miner...

In this study, the recovery of barite and silver from G\"um\"uЕџk\"oy Silver Plant (Turkey) tailings was investigated using Multi Gravity Separation and cyanidation methods. Approximately 20 million tons of tailings contain 20.62\% BaSO4, 51.15\% SiO2, 11.5\% CaCO3, 3.84\% Fe2O3, 4.76\% Al2O3 and 120 g/ton silver with a particle size of 70\% passing 37 $\mu$m have been disposed of to the tailings pond in G\"um\"uЕџk\"oy SilverPlant over the years. Multi Gravity Separator (MGS) produced a concentrate containing 65....

This paper summarises the results of the first phase of oil \& gas exploration of the B-Golitza Block. A revised geological framework will be presented, which puts the stratigraphy in a chronostratigraphic scheme, incorporating sequence stratigraphic architecture. Use of a chronostratigraphic framework for exploration of the block has enabled the exploration Play Elements to be identified and both their stratigraphic and aerial distribution to begin to be determined within an integrated methodology that incorporat...

The North part of Kashmar is located 250 Km South-west of Mashhad, Northeast of Iran. It is a part of Darouneh Fault zone and contains rhyolitic, andesitic pyroclastic and lava flow. The geometry of Kashmar strike-slip fault has been reviewed and described. From the data obtained it appears that fault geometry (the distribution of shear fractures such as R,R,ЩЋP surfaces, Riedel structures) plays an important role in controlling the location and emplacement of mineralization of gold and copper ore deposits. The Ri...

The trace elements in the main sulphide and sulphate minerals in coal were determined. Coals with different degree of coalification (ranging from lignite to subbituminous) from three important Bulgarian coal basins – Maritza East, Pernik and Balkan have been investigated. Heavy liquids and hand picking under a binocular stereomicroscope were applied to concentrate the sulphur-bearing minerals present in coal. Trace elements in them were detected by inductively coupled plasma – atomic emission spectroscopy (ICP...