Victor

Site Name

Primary: Victor

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Commodity

Primary: Copper
Secondary: Gold

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Location

State: Alaska
District: Koyukuk

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Land Status

Not available

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Holdings

Not available

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Workings

Not available

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Ownership

Not available

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

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Physiography

Not available

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Mineral Deposit Model

Model Name: Porphyry Cu, skarn-related

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Orebody

Not available

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Structure

Not available

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Alterations

Alteration Text: Propylitic and sericitic alteration in Devonian(?) meta-granodiorite. Associated skarns exhibit retrograde alteration related to proximity to the altered intrusives.

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Rocks

Not available

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Analytical Data

Not available

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Materials

Ore: Bornite
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Magnetite
Ore: Molybdenite
Gangue: Quartz

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Comments

Comment (Reference): Primary Reference = Nicholson, 1990

Comment (Geology): Age = Devonian based on reported Early Devonian Pb/Pb zircon ages from the associated Baby Creek batholith and Horace Mountain plutons (Dillon and others, 1996)

Comment (Exploration): Status = Inactive

Comment (Reserve-Resource): Reserves = Nicholson (1990) estimated that skarn pods at Victor and Eva contain 50,000 tons of 2 percent Cu. She notes that comparisons with tonnages of other porphyry copper-related skarns and the presence of extensive calcareous rocks in the area suggest appreciable undiscovered skarn mineralization. Young and others (1997) give a range of 74,000 tons to 4.56 million tons as an aggregate resource figure.

Comment (Deposit): Other Comments = See also: Venus (CH065), Eva (CH063), and Evelyn Lee (CH059) prospects. Most of the publications describing this area provide a combined description of the Venus-Victor-Eva prospects. The land (and presumably the original claims) have been acquired by Doyon, Limited via its Alaska Native Claims Settlement Act selections. Bornite and chalcopyrite reportedly have been sighted in cliffs along Mathews River (DeYoung, 1978, loc. 72). That mineralization is possibly on the Victor and/or Eva prospects.

Comment (Workings): Workings / Exploration = At least 23 claims staked from 1967 to 1970.

Comment (Geology): Geologic Description = The Victor and Venus (CH065) prospects both are in a terrane of altered Devonian(?) meta-granodiorite and contact-related garnet-pyroxene skarns developed in adjacent marbles and calc-schists. Alteration of the meta-granodiorite at Venus appears to be more intense than at Victor, which is characterized by propylitic and sericitic, but not potassic, alteration (Nicholson, 1990). Mineralization at the Victor prospect apparently is more prevalent in the skarns than in the meta-igneous rocks (Nicholson, 1990). Minerals in the skarns are retrograded and have been sketchily described as garnet, clinopyroxene, actinolite, epidote, calcite, quartz, chlorite, chalcopyrite, plus or minus bornite?, and pyrite (Nicholson, 1990). A hand specimen from the Victor prospect, described in Newberry and others (1986), yielded values of 1.1 percent Cu, 5.5 ppm Ag, less than 0.14 ppm Au, and negligible Pb and Zn. Young and others (1997) reported that hundreds of meters (presumably in drill intercepts) with grades of 0.1 to 0.6 percent Cu have been found on the property, with some values as high as 5.5 percent Cu, 150 ppm Mo, and 0.41 ppm Au. Nicholson (1990) noted that some workers have characterized the mineralization in the Big Spruce Creek area as volcanogenic in origin. Although Young and others (1997) discuss the Victor prospect as a porphyry copper deposit, their comments may more broadly encompass the Victor-Venus-Eva prospects.

Comment (Deposit): Model Name = Porphyry Cu, skarn-related deposits(?) (Cox and Singer, 1986; model 18a)

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References

Reference (Deposit): Arctic Environmental Information and Data Center, 1982, Mineral terranes of Alaska: University of Alaska, Fairbanks, 7 sheets, scale 1:1,000,000.

Reference (Deposit): Young, L.E., St. George, P., and Bouley, B., 1997, Porphyry copper deposits in relation to the magmatic history and palinspastic restoration of Alaska, in Goldfarb, R.J., and Miller, L.D., (eds.), Mineral deposits of Alaska: Economic Geology Monograph 9, p. 306-333.

Reference (Deposit): Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Dawson, K.M., Eremin, R.A., Goryachev, N.A., Koch, R.D., Ratkin, V.V, Rozenblum, I.S., Shpikerman, V.I., Frolov, Y.F., Gorodinsky, M.E., Melnikov, V.D., Diggles, M.F., Ognyanov, N.V., Petrachenko, E.D., Petrochenko, R.I., Pozdeev, A.I., Ross, K.V., Wood, D.H., Grybeck, D., Khanchuck, A.I., Kovbas, L.I., Nekrasov, I.Y., and Sidorov, A.A., 1996, Significant metalliferous and selected non-metalliferous lode mineral deposits and placer districts, and for metallogenesis of the Russian Far East, Alaska, and the Canadian Cordillera: U.S. Geological Survey Open-File Report 96-513-B, 385 p.; U.S. Geological Survey Open-File Report 96-513-B, 385 p. (CD-ROM format).

Reference (Deposit): Ventures Resource Corporation, 1998, 1997 Annual Report and Website (Worldwide Web URL http://www.venturesresource.com/).
URL: http://www.venturesresource.com/

Reference (Deposit): Newberry, R.J., Dillon, J.T., and Adams, D.D., 1986, Regionally metamorphosed calc-silicate-hosted deposits of the Brooks Range, northern Alaska: Economic Geology, v. 81, p. 1728-1752

Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Grybeck, D.J., Koch, R.D., Eremin, R.A., Rozenblum, I. S., Sidorov, A.A., Byalobzhesky, S.G., Sosunov, G.M., Shpikerman, V.I., Gorodinsky, M.E., 1993, Metallogenesis of mainland Alaska and the Russian Northeast: U.S. Geological Survey Open-File Report 93-0339, 3 sheets, 230 p.

Reference (Deposit): Nicholson, L.M., 1990, Porphyry copper, copper skarn, and volcanogenic massive sulfide occurrences in the Chandalar copper district, Alaska: University of Alaska, Fairbanks, M.Sc. thesis, 164 p.

Reference (Deposit): Newberry, R.J., Allegro, G.L., Cutler, S.E., Hagen-Levelle, D.D., Adams, D.D., Nicholson, L.C., Weglarz, T.B., Bakke, A.A., Clautice, K.H., Coulter, G.A., Ford, M.J., Myers, G.L., and Szumigala, D.J., 1997, Skarn deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 355-395.

Reference (Deposit): DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

Reference (Deposit): Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.

Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, Donald, Robinson, M.S., Smith, T.E., and Yeend, Warren, 1988, Metallogeny and major mineral deposits of Alaska: U.S. Geological Survey Open-File Report 88-73, 97 p., 2 plates, scale 1:5,000,000.

Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, D.J., Robinson, M.S., Smith, T.E., and Yeend, W., 1987, Significant metalliferous lode deposits and placer districts of Alaska: U.S. Geological Survey Bulletin 1786, 104 p.

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