Spahievo

Porphyry copper prospect in Kardzhali, Bulgaria

Names and other identifiers

GMRAP ID 380
Tract name Dinaride-Aegean Region (150pCu6002)
Site status prospect

Geographic location

Country Bulgaria
State or province Kardzhali
Geographic location 25.314, 41.739
Geologic map unit 25.314, 41.739
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 32.82Ma
Age determination method unknown
Age range 32.82 ±0.40 Ma
Age reference Singer and others (2008)
Minerals albite, alunite, biotite, bornite, chalcopyrite, diaspore, galena, kaolinite/illite, molybdenite, pyrite, pyrophyllite, sericite, sphalerite, turquoise
Associated rocks monzonite porphyry, felsic dike, rhyodacite, shoshonite dike, gabbro-diorite, latite porphyry, quartz trachyte, rhyolite pyroclastics, shoshonite lava
Tectonic setting postconvergence
Stratigraphic age Oligocene

Commodity and development information

Development status Prospect
Major commodities Cu
Gold-Moly ratio -9999

Reference information

Comments Anomalous contents: 800 ppm Cu, 370 ppm Mo. 60% covered by Neogene-Quaternary sediments.
Study area name Europe
References Georgiev and others (1996); Marchev and Singer (1999); Singer and Marchev (2000); Yosifov and others (1990); Singer and others (2008)
Site reference Sutphin and others (2013)
Georgiev, V., Malinov, O., Milovanov, P., and Nikova, L., 1996, Metallogeny of the Spahievo ore field, SE Bulgaria, in Popov, P., ed., Plate tectonic aspects of the Alpine metallogeny in the Carpatho-Balkan region: UNESCO-IGCP Project No. 356 Annual Meeting, Sofia [Proceedings], v. 2, p. 75–80.
Marchev, P., and Singer, B., 1999, Timing of magmatism, alteration-mineralization, and caldera evolution in the Spahievo ore field, Bulgaria—From laser-fusion 40Ar/39Ar dating, in Stanley, C.J., and others, eds., Mineral deposits—Processes to processing: Society for Geology Applied to Mineral Deposits (SGA) Biennial Meeting, 5th, London, 1999 [Proceedings], v. 2, p. 1271–1274.
Singer, Brad, and Marchev, Peter, 2000, Temporal evolution of arc magmatism and hydrothermal activity, including epithermal gold veins, Borovitsa caldera, Southern Bulgaria: Economic Geology, v. 95, p. 1155–1164. (Also available at http://dx.doi.org/10.2113/gsecongeo.95.5.1155.)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/.
Yosifov, D., Maneva, B., Tsvetkov, D., and Pehelarov, B., 1990, [Geotectonic position and structure of Spahievo ore field]: Geologica Balcanica, v. 20/1, p. 45–65. [In Russian.]