Derekoy-Karadere

Porphyry copper deposit in Kirklareli, Turkey

Names and other identifiers

GMRAP ID 391
Tract name Transylvania-Balkan Mountains (150pCu6001)
Included sites Karadere
Site status deposit

Geographic location

Country Turkey
State or province Kirklareli
Geographic location 27.402097, 41.927617
Geologic map unit 27.402097, 41.927617
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 76.7Ma
Age determination method K-Ar
Age range 76.7 ±3.8 to 70.9 ±3.5 Ma
Age reference Ohta and others (1988)
Minerals actinolite, albite, apatite, biotite, bornite, calcite, chalcopyrite, chlorite, enargite, epidote, hematite, magnetite, molybdenite, pyrite, rutile, sericite
Associated rocks monzonite porphyry, quartz diorite porphyry, tonalite porphyry, skarn, gneiss, granite,spilite, dolomite, gabbro, granodiorite, limestone, marble, phyllite, schist
Tectonic setting continental margin
Stratigraphic age Late Cretaceous

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au
Tonnage (Mt) 271Mt
Cu grade (%) 0.28%
Mo grade (%) 0.003%
Contained copper 760,000t
Gold-Moly ratio -9999

Reference information

Comments In the 1970s, the Turkish Geological Survey conducted a stream sediment sampling program in the Thrace region that delineated several prospective metal anomalies. Follow-up exploration identified the Derekoy. Low-grade porphyry copper-molybdenum deposit (Slim, 2006). Geology: magnetite series I-type granitoid stocks intrude Triassic to Jurassic metasedimentary rocks along the axis of a pre-Cretaceous northwest-southeast-trending anticline (Ohta and others, 1988; Yigit, 2009); metasedimentary rocks are partly covered by Late Cretaceous volcano-sedimentary rocks (Taner and Ça?atay, 1983). Cu-Mo mineralization is closely related to tonalite porphyry. Resource: 270 Mt at 0.284% Cu (Mutschler and others, 1999); or 221 Mt at 0.27% Cu equivalent (Ersecen, 1989); or 200 at 0.27 Cu+Mo; 221 Mt at 0.24 Cu and 0.0027 Mo (MTA database). Open at depth and laterally; included as a deposit in Singer and others (2008) grade and tonnage model. See Erdem (2008) for an analysis of the net present value of the deposit. Resource for Karadere prospect (within 2 km of Derekoy): 500,000 metric tons at 0.43% Cu.
Study area name Europe
References Anatolia Minerals Development Ltd. (2005); Cloudbreak Resources Ltd. (2007); Engin (2002); Erdem (2008); Ersecen (1989); Leaman and Staude (2002); Mutschler and others (1999); Ohta and others (1988); Slim (2006); Taner and Ça?atay (1983); Yigit (2006); Yigit (2006); Yigit (2009); Young (2010); Singer and others (2008)
Site reference Sutphin and others (2013)
Anatolia Minerals Development Ltd., 2005, Key projects-lkiztepe/Demirkoy copper-molybdenum: accessed May 15, 2011, at http://www.anatoliaminerals.com/projects.cfm?pid=20&id=48. [Web page no longer available.]
Cloudbreak Resources Ltd., 2007, Cloudbreak continues to expand its Ikiztepe-Sarp copper porphyry deposits in northwest Turkey: Cloudbreak Resources Ltd. press release, November 19, 2007, 2 p., accessed Jun 15, 2011, at http://www.marketwire.com/mw/release.do?id=794653.
Engin, T., 2002, Mineral deposits in Turkey, in Tvalchrelidze, A.G., and Morizot, G., eds., Mineral resource base of the Southern Caucasus and systems for its management in the XXI century: Dordrecht, Kluwer Academic Publishers, NATO Science Series, IV. Earth and Environment Sciences, v. 17, p. 81–104.
Erdem, Ömer, 2008, Uncertainty assessment for the evaluation of net present value of a mineral deposit [Derekoy]: Ankara, Turkey, Middle East Technical University, The Graduate School of Applied and Natural Sciences, Master’s thesis, 123 p. (Also available at http://etd.lib.metu.edu.tr/upload/12610207/index.pdf.)
Ersecen, Necdet, 1989, Known ore and mineral resources of Turkey: Ankara, Maden Tetkik Arama Enstitüsü (MTA), Genel Mürdürlügü Arastirma, Planlama ve Koordinasyon Dairese Maden Envanterleri ve Maden Istatistikleri Degerlendirme Birimi [General Murdurlugu Research, Planning and Coordination Department of Statistics on Mining and Mineral Unit Inventories], no. 185, 8 p.
Leaman, Peter, and Staude, John-Mark, 2002, Metallogenic evolution of the western Tethys of Turkey and Iran, in Sugiuchi, N., ed., Mineral potential of Asia—A forum on Asian metallogeny and ore deposits, exploration and development potential, regulatory and investment climate, and management practicalities, Vancouver, Canada, January 21, 2002, Proceedings: Metal Mining Agency of Japan, p. 15–16, accessed September 13, 2012, at http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=B237BEFF620F81E2D5278DBD486EBBF7?doi=10.1.1.196.463&rep=rep1&type=pdf.Mutschler, F.E., Ludington, Steve, and Bookstrom, A.A., 1999, Giant porphyry-related metal camps of the world—A database: U.S. Geological Survey Open-File Report 99–556, [5] p. and digital data, accessed September 27, 2013, at http://pubs.usgs.gov/of/1999/of99-556/.Ohta, Eijun; Dogan, Ramazan; Batik, Hasan; and Abe, Masayuki, 1988, Geology and mineralization of Derekoy porphyry copper deposit, northern Thrace, Turkey: Japan Geological Survey Bulletin, v. 39, no. 2, p. 115–133. (Also available at https://www.gsj.jp/data/bull-gsj/39-02_04.pdf.)Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.
Slim, Bryan, 2006, Ikiztepe-Sarp review: Minestart Management Inc. National Instrument 43-101 Technical Report prepared for Cloudbreak Resources Ltd., 35 p., accessed August 3, 2011, at http://www.stocksjournal.com/CDB/I-Sarp43-101rpt.pdf. [Web page no longer available.]
Taner, M.F., and Ça?atay, Ahmet, 1983, Geology and mineralogy of the ore deposits of the Istranca Massif: Geological Society of Turkey Bulletin, v. 26, p. 3–40. [In Turkish.]
Yigit, Ozcan, 2006, Gold in Turkey—A missing link in Tethyan metallogeny: Ore Geology Reviews, v. 28, p. 147–179. (Also available at http://dx.doi.org/10.1016/j.oregeorev.2005.04.003.)Yigit, Ozcan, 2009, Mineral deposits of Turkey in relation to Tethyan metallogeny—Implications for future mineral exploration: Economic Geology, v. 104, p. 19–51. (Also available at http://dx.doi.org/10.2113/gsecongeo.104.1.19.)
Young, B.B., 2010, Sarp property, Kirklarelli province, Turkey: National Instrument 43-101 Technical Report prepared for Valahalla Resources Ltd., 76 p.