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Unnamed Prospect (ARDF - HU012; east of Caribou Mountain), Hughes Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types
Unnamed Prospect (ARDF - HU012; east of Caribou Mountain)- not defined -
Hughes Mining DistrictMining District
Yukon-Koyukuk Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
66° 10' 51'' North , 155° 50' 5'' West
Latitude & Longitude (decimal):
66.18083,-155.83472
GRN:
N45W47
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
202178
Long-form identifier:
mindat:1:2:202178:5
GUID (UUID V4):
0


Location: This prospect is east of Caribou Mountain, centered along the ridge that separates Dry Creek and Ida Gulch. The prospect is at an elevation of about 1,600 feet, about 3.2 miles east-northeast of the summit of Caribou Mountain and 3 miles west of Hogatza. The location is accurate within one-half mile.
Geology: Miller and Ferrians (1968) collected a grab sample of pyrite-bearing quartz that contains 2.4 ppm gold, 300 ppm copper, 150 ppm lead, and 300 ppm zinc. Sediment samples from streams draining the intrusive contact are anomalous in Pb and Cu (Miller and Ferrians, 1968). Nokleberg and others (1996) subsequently described the deposit as quartz veins and a quartz stockwork in Upper Cretaceous monzonite porphyry and Lower Cretaceous-Upper Jurassic andesitic volcanic rocks. The veins and stockwork contain chalcopyrite, pyrite, and traces of molybdenite and covellite. The monzonite porphyry is altered to a phyllic-argillic-propylitic assemblage, which is distributed concentrically around the core of the intrusive. Samples contain up to 2.0% copper, 0.2% molybdenum, and 2.4 grams of gold per ton. Nokleberg and others (1996) interpret the prospect as a porphyry copper (-gold) deposit.
Workings: Surface sampling.
Age: The Zane Hills pluton is Cretaceous based on a K/Ar date of 81 Ma (Miller and others, 1966).
Alteration: A phyllic-argillic-propylitic alteration assemblage is distributed concentrically around the core of a monzonitic intrusive.

Commodities (Major) - Au, Cu, Mo; (Minor) - Pb, Zn
Development Status: None
Deposit Model: Porphyry Cu-Au (?) (Cox and Singer, 1986; model 20c)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


5 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘCovellite2.CA.05aCuS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2

List of minerals for each chemical element

OOxygen
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ CovelliteCuS
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CovelliteCuS
MoMolybdenum
Moⓘ MolybdeniteMoS2

Other Databases

Link to USGS - Alaska:HU012

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Grybeck, Donald, 1977, Map showing known mineral deposits of the Brooks Range, Alaska: U.S. Geological Survey Open-File Report 77-166-C, 45 p., 1 sheet, scale 1:1,000,000. Hollister, V.F., 1978, Geology of the porphyry copper deposits of the Western Hemisphere: Society of Mining Engineering, American Institute of Mining, Metallurgy, and Petroleum Engineers Inc., 218 p. Miller, T.P., and Ferrians, O.J., Jr., 1968, Suggested areas for prospecting in the central Koyukuk River region, Alaska: U.S. Geological Survey Circular 570, 12 p. Nokleberg, W.J., Bundtzen, T.K., Brew, D.A., and Plafker, G., 1995, Metallogenesis and tectonics of porphyry copper and molybdenum (gold, silver) and granitoid-hosted gold deposits of Alaska, in Schroeter, Tom, ed., Porphyry deposits of the northwestern Cordillera: Canadian Institute of Mining and Metallurgy Special Volume 44, p. 103-141. 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).
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