Announcements
Confirmed Speakers
HENDRIK HEINZ
University of Colorada / USA
SHLOMO NIR
The Hebrew University of Jerusalem / ISRAEL
MUSTAFA ERGİN
Ankara University / TURKEY
ANTOINE THILL
Université Paris-Saclay / FRANCE
MCM 2016 POSTER
Half - day Touristic Excursions around Çeşme
 
Half-day Touristic trip to Çeşme and Alaçatı. Details are announced under Organization Information.
 
 
 
Post-Conference Technical Excursion 
 

 

Field Trip : Uşak - Kışladağ Porphyry Gold Deposit 

Date: September 29, 2016

Departure Time : 6am Ilıca Hotel Lobby.

Location: Departing from and returning to Çeşme, Turkey

Leaders: Hüseyin YALÇIN, TUPRAG

Distance : About 370km

Attendee Minimum: 20

Fee: 70 €

(Returning time 4pm at Kısladağ, Ilıca Hotel arrival time about 8pm)

This trip will visit Eldoradogold’s flagship Kışladağ open pit and the current understanding of the geology and genesis of the deposits will be discussed. Participants will also have an opportunity to have a tour on the way to Kışladağ. All trip participants will be guests of TUPRAG and will need to follow the occupational health and safety requirements of the operations while on site. Field trip fees cover all social activities and foods.

 

KIŞLADAĞ GOLD MINE - UŞAK

The Kışladağ Gold Mine is open-pit mined since 2006 by TÜPRAG, a subsidiary of Eldorado Gold Corp. The Kışladağ mine site is located on the administrative boundary between the Ulubey and Eşme districts of Uşak province. The site is situated approximately 180 km east of the province of İzmir and about 30 km to the southwest of the provincial city of Uşak, in the Aegean Region. Kışladağ gold deposit has a reserve of approximately 535 million tonnes proven and probable, with an average annual production permit of 35 million tones. The average grade of the ore is 0.66   g/t gold, and 1.15 g/t silver. Kışladağ is mined using conventional open-pit mining techniques where drilling and blasting operations are carried out together with loading and haulage activities (http://www.tuprag.com.tr).

Geomorphologically, the mining area occurs along a tectonic fault zone situated 900-1100 m above sea level. The ore deposit developed in a volcanic succession affected by hydrothermal alteration and chemical weathering outward. Topographically, higher sectors are generally represented by volcanic rock formations. The region includes peneplains developed on a metamorphic foundation in the west, plateaus formed of horizontal Neogene-aged sedimentary rocks in the east, and wide volcanic cones (Yazıcıgil et al., 2000). 

Kışladağ is a porphyry gold deposit formed within a coeval Miocene volcanic complex in Western Anatolia. At least four extensively altered latite intrusive phases are recognized in the deposit. Mineralogical zonation from the potassic core (K-feldspar, biotite, quartz and locally magnetite) in the center of the epithermal alteration within the deposits outward generally is illite, kaolinite, quartz, and tourmaline. Remnants of a quartz-alunite cap increase upward along the sequence. The mineralized intrusions at Kışladağ are enclosed within volcanic and volcaniclastic strata that overlie basement schist and gneiss. These strata dip outward from the deposit core, and display rapid facies changes from massive lavas and coarse and poorly stratified units proximal to the porphyry centre, to finer well-stratified volcaniclastic strata that inter-finger with lacustrine sedimentary rocks in surrounding sedimentary basins. There has been relatively little structural modification affected the deposit and surrounding Tertiary rocks. Lithologic contacts are primarily intrusive or depositional, with no documented major fault offsets (http://www.tuprag.com.tr; Erkoyun and Kadir, 2016).

Gold mineralization at Kışladağ occurs within zones of sulphide and quartz stockworks, and disseminated to fracture controlled sulphides. Pyrite is dominant (~3%) in the primary mineralized zone associated with trace amounts of molybdenum, zinc, lead, and copper. Grade of gold enhance in multiphase of quartz sulphide stockwork and zones of mottled to pervasive silicification. Oxidation phase extends to a depth of 30 to 80 m and 20 to 50 m on the southern and norther sides of the deposit, respectively. Fe-oxyhydroxide such as geothite and lepidocrosite are the most abundant alteration phase. Chemical weathering occurs mainly at area surrounding the porphry gold deposit. (http://www.tuprag.com.tr; Erkoyun and Kadir, 2016).

      

References

Erkoyun, H., Kadir, S., 2016. Epithermal alteration of Miocene volcanic units in the Gedikler region and the area surrounding the Kışladağ gold deposit, Uşak (western Anatolia), Turkey. N. Jb. Miner. Abh. (J. Min. Geochem.), 193/2, 121-145.

Yazıcıgil, H., Doyuran, V., Yılmaz, K.K., Yeşilnacar, E., Kansu, E.,  2000. Determination of areas with potential to supply water to the Gümüşkol mine project of Tüprag Metal Mining Company. Project No: 00-0309-2-00-03, Middle East Technical University.

Tüprag Metal Madencilik Sanaayi ve Ticaret AŞ, 2016. www.tuprag.com.tr/, 26 April 2016.

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