Lora

Porphyry copper deposit in Magadanskaya oblast', Russian Federation

Names and other identifiers

GMRAP ID 447
Alternate names Nakhtandjin, Nakhtandin Lora, ore cluster of the Lorinskij ore knot, Meldek
Tract name Pacific Margin (142pCu8514)
Site status deposit

Geographic location

Country Russian Federation
State or province Magadanskaya oblast'
Geographic location 153.45, 59.4
Geologic map unit 153.45, 59.4
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 94Ma
Age determination method unknown isotopic
Age range 97–92 Ma (Inferred from age of diorite and formation of eruptive breccia.)
Age reference Volkov, Savva and others (2006, p. 462)
Minerals chalcopyrite, chlorite, covellite, epidote, goethite, ilmenite, magnetite, pyrite, sericite
Associated rocks intrusive granodiorite-tonalite suite, volcanic rocks (breccia), explosive breccia, plagiogranite porphyry,
Tectonic setting mixed
Stratigraphic age Late Cretaceous

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Mo, Ag
Tonnage (Mt) 178Mt
Cu grade (%) 0.5%
Mo grade (%) 0.025%
Ag grade (g/t) 2.1g/t
Contained copper 900,000t
Gold-Moly ratio -9999

Reference information

Comments Associated with gabbro-plagiogranite and tonalite-granodiorite intrusions.
Study area name Northeast Asia
References Singer and others (2008); Nokleberg and others (1993); Nokleberg and others (1998); Kirkham and Dunne (2000); Skibin (1982); Rundkvist (2001); Volkov, Savva and others (2006)
Site reference Mihalasky, Ludington, Alexeiev, and others (2015)
Kirkham, R.V., and Dunne, K.P.E., comps., 2000, World distribution of porphyry, porphyry-associated skarn, and bulk-tonnage epithermal deposits and occurrences: Canada Geological Survey Open File 3792a, 26 p. and 1 diskette. (Also available at http://dx.doi.org/10.4095/211229.)Nokleberg, W.J., Bundtzen, T.K., Grybeck, Donald, Koch, R.D., Eremin, R.A., Rozenblum, I.S., Sidorov, A.A., Byalobzhesky, S.G., Sosunov, G.M., Shpikerman, V.I., and Gorodinsky, M.E, 1993, Metallogenesis of mainland Alaska and the Russian northeast: U.S. Geological Survey Open-File Report 93–339, 230 p. (Also available at http://pubs.usgs.gov/of/1993/0339/ and at http://pubs.usgs.gov/of/1993/0339/report.pdf.)Nokleberg, W.J., West, T.D., Dawson, K.M., Shpikerman, V.I., Bundtzen, T.K., Parfenov, L.M., Monger, J.W.H., Ratkin, V.V., Baranov, B.V., Byalobzhesky, S.G., Diggles, M.F., Eremin, R.A., Fujita, Kazuya, Gordey, S.P., Gorodinskiy, M.E., Goryachev, N.A., Feeney, T.D., Frolov, Y.F., Grantz, Arthur, Khanchuk, A.I., Koch, R.D., Natalin, B.A., Natapov, L.M., Norton, I.O., Patton, W.W. Jr., Plafker, George, Pozdeev, A.I., Rozenblum, I.S., Scholl, D.W., Sokolov, S.D., Sosunov, G.M., Stone, D.V., Tabor, R.W., Tsukanov, N.V., and Vallier, T.L., 1998, Summary terrane, mineral deposit, and metallogenic belt maps of the Russian Far East, Alaska, and the Canadian Cordillera: U.S. Geological Survey Open-File Report 98-136, CD-ROM. (Also available at http://pubs.usgs.gov/of/1998/of98-136.)
Rundkvist, D.V., ed., 2001 [2002], Mineragenic map of Russian Federation and adjacent states (with the boundaries of former USSR): Russian Federation Ministry of Natural Resources, State Research and Development Enterprise (Aerogeologica), 49 p., Excel workbook, and 1 map on 18 sheets, scale 1:2,500,000, CD-ROM.
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/.
Skibin, Y.P., 1982, Copper-molybdenum mineralization of the northern coast of Ochotsk sea: Soviet Geology, no. 1, p. 78–85. [In Russian.]
Volkov, A.V., Savva, N.E., Sidorov, A.A., Egorov, V.N., Shapovalov, V.S., Prokof’ev, V.Yu., and Kolova, E.E., 2006, Spatial distribution and formation conditions of Au-bearing porphyry Cu-Mo deposits in the northeast of Russia: Geology of Ore Deposits, v. 48, p. 448–472. (Also available at http://dx.doi.org/10.1134/S107570150606002X.)