Alaska
Prospect

Pyramid

Alaska, United States
CopperMolybdenumZincAntimonyLeadGoldSilver
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper, Molybdenum
SecondaryZinc, Antimony, Lead, Gold, Silver
Commodity typeM
Deposit
Model53: Porphyry Cu54: Porphyry Cu (North America)79: Porphyry Cu-Mo
Orebody formWell-defined concentric alteration zones.
Materials
Ore mineralsChalcocite, Chalcopyrite, Covellite, Molybdenite, Pyrite
GangueQuartz
Geology
Host rockDiorite
Associated rockDiorite
AlterationThe alteration consists of a barren, potassically-altered core zone, an intermediate zone characterized by pervasive quartz and sericite, and a propylitic outer zone.
Economic & production
Development statusProspect
Identification
Deposit ID10308987
MRDS IDA010658
Alternate namesPyramid Prospect, Pyramid Mountain Copper Prospect
RegionNA
Data scoreA
Coordinates55.62924, -160.67244
References
Wolfhard, F.H., 1974, Pyramid prospect preliminary evaluation: Unpublished Quintana Minerals Corporation report, 9 p., 6 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)Wolfhard, F.H., 1976, Final report, Pyramid project 1976 work: Unpublished Quintana Minerals Corporation report, 2 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)Armstrong, R.L., Harakal, J.E., and Hollister, V.F., 1976, Age determinations of late Cenozoic porphyry copper deposits of the North American Cordillera: Institute of Mining and Metallurgy Transactions, Section B, v. 85, p. 239-244.Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)Hollister, V.F., 1978, Geology of the porphyry copper deposits of the Western Hemisphere; New York, Society of Mining Engineering, American Institute of Mining, Metallurgy, and Petroleum Engineers Incorporated, 218 p.Butherus, D.L, Gressitt, E.E., Pray, J., Corner, N.G., Lindberg, P.H., and Fankhauser, R.E., 1979, Exploration and evaluation of the Aleut Native Corporation lands; Volume III: Resource Associates of Alaska, 69 p. 90 sheets, various sacales. (Report held by the Aleut Native Corporation, Anchorage, Alaska.)Eakins, G.R., Bundtzen, T.K., Robinson, M.S., Clough, J.G., Green, C.B., Clautice, K.H., and Albanese M.A., 1983, Alaska's mineral industry, 1982, Alaska Division of Geological and Geophysical Surveys Special Report 31, 63 p.Freeport Exploration Company, 1985, 1984 report of activities, Canoe Bay joint venture: Freeport Exploration Company, 25 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, scale 1:250,000.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.Bundtzen, T.K., Green, C.B., Deagen, J., and Daniels, C.L., 1987, Alaska's mineral industry, 1986: Alaska Division of Geological and Geophysical Surveys, Special Report 40, 68 p.Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.Wilson, F.H., White, W.H., Detterman, R.L., and Case, J.E., (1991) 1996, Maps showing the resource assessment of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, with a section on Geology of the Pyramid porphyry copper deposit, Alaska Peninsula, Alaska, by W.H. White, J.S. Christie, M.R. Wolfhard, and F.H.Wilson, and a section on Description of the Shumagin epithermal gold vein deposit, by W.H. White and L.D. Queen: U.S. Geological Survey Miscellaneous Field Studies Map MF-2155-F, 46 p., 2 sheets, scales 1:500,000 and 1:250,000.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.Christie, J.S., and Wolfhard, M.R., 1977, Pyramid porphyry copper-molybdenum prospect, Alaska: Geol. Assoc. of Canada, Annual Meeting, 1977, Program with Abstracts, Vol. 2, p. 12.Cobb, E.H., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and West-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 39 p., 1 sheet, scale 1:1,000,000.Bundtzen, T.K., Eakins, G.R., Green, C.B., and Lueck, L.L., 1986, Alaska's mineral industry 1985: Alaska Division of Geological & Geophysical Surveys Special Report 39, 68 p.Christie, J.S., 1975, Pyramid Project, Aleut-Quintana-Duval joint venture report on 1975 drill program: Quintana Minerals Report, 17 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.Unpublished information from the USGS BORA-MRDS files.