Porphyry copper deposit in Aktyubinsk, Kazakhstan

Names and other identifiers

Alternate names Sherkarabulak-II
Tract name Magnitogorsk Arc (142pCu8201)
Site status deposit

Geographic location

Country Kazakhstan
State or province Aktyubinsk
Geographic location 58.665119, 48.946072
Geologic map unit 58.665119, 48.946072
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 355Ma
Age determination method unknown
Age range Late Devonian-Early Carboniferous
Minerals actinolite, anatase, ankerite, arsenopyrite, biotite, bornite, chalcopyrite, chlorite, cinnabar, epidote, galena, gold, hematite, ilmenite, magnetite, molybdenite, prehnite, pumpellyite, pyrite, rutile, scheelite, sericite, sphalerite, stibnite, tetrahedrite
Associated rocks diorite-granodiorite pluton, plagiogranite porphyry stock
Tectonic setting island arc
Stratigraphic age Late Devonian-Early Carboniferous

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Mo
Minor commodities Ag
Tonnage (Mt) 7Mt
Cu grade (%) 0.41%
Au grade (g/t) 6.6g/t
Ag grade (g/t) 65g/t
Contained copper 41,000t
Gold-Moly ratio -9999

Reference information

Comments Cu/Mo=500; economic Mo grade. Ore contains Re <0.01 to 0.04 ppm. Main alteration types: skarn, potassic, phyllic. Airyuksky Granodioritic Intrusive Complex (D3-C1); host rocks D1-2 sedimentary rocks, D3 granodiorite porphyry, D1-2 mafic volcanic rock. Stockwork extend 80-240 m; thickness 9-37 m (up to 121 m), downdip 600-700 m. Medium deposit by FSU category (100 to 1,000 kt Cu).
Study area name Urals
References Grabezhev (2007), Krivtsov (1993), Plotinskaya and others (2014), Seltman and Porter (2005), Shatov and others (2003)
Site reference Hammarstrom, written commun (2015)
Grabezhev, A.I., 2007, Rhenium in ores of porphyry copper deposits in the Urals: Doklady Earth Sciences, v. 413, no. 2, p. 265–268.
Krivtsov, A. I.,ed., 1993, [Geological survey and development of mineral reserve base]: Moscow, TSNIGRI, 618 p. [In Russian]
Plotinskaya, O.Y., Grabezhev, A.I., and Seltmann, Reimar, 2014, Porphyry deposits of the South Urals—Rhenium distribution:Acta Geologica Sinica, v. 88, no. 2, p. 584–586.
Seltman, R., and Porter, T.M., 2005, The porphyry Cu-Au/Mo deposits of Central Eurasia. 1. Tectonic, geologic and metallogenic setting, and significant deposits, in Porter, T.M., ed., Superporphyry copper and gold deposits: a global perspective: PGC Publishing, Adelaide, v. 2, p. 467–512.
Shatov, V., Seltman, R., and Moon, C.J., 2003, The Yubileinoe porphyry Au(-Cu) deposit, the South Urals: geology and alteration controls of mineralization, in Eliopoulos, D.G., and others, eds., Mineral exploration and sustainable development, v.1: Millpress, Rotterdam, p. 379–382.