Gold Cliff Premier

Prospect in Alaska, United States with commodities Silver, Gold, Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10000183
MRDS ID A010222
Record type Site
Current site name Gold Cliff Premier

Geographic coordinates

Geographic coordinates: -130.04564, 56.05283 (WGS84)
Relative position The Gold Cliff Premier prospect is at an elevation of about 450-800 feet adjoining the Salmon River at the northeast foot of Mineral Hill (Elliott and Koch, 1981, p. 16, loc. 60). The original claims lay along both sides of the river, and the property appears to straddle the boundary of sections 23 and 24. The location is probably accurate within a quarter of a mile.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Primary
Lead Primary
Zinc Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Tetrahedrite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Intense pyritization of country rocks. Hostrock identified as quartzite may represent silicification of pelitic country rock.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -130.04564, 56.05283

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the prospect are pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group; the Texas Creek Granodiorite, which underlies and locally intrudes the Hazelton; the Eocene Boundary Granodiorite, which intrudes the Hazelton and Texas Creek rocks; and still-younger Tertiary lamprophyre dikes that cut all of these rocks (Smith 1973, 1977; Koch, 1996).? the deposit (Buddington, 1929, p. 90) is in quartzite, tuff and slate cut by Triassic and Eocene porphyritic granodiorite dikes and consists of intensely fractured and pyritized quartzite, and of sheared tuffaceous rock mineralized with a 2.5 foot band of pyrite, quartz, and calcite. Samples of the mineralized band assayed as much as 1 oz Au and 3-4 oz Ag per ton. Elsewhere on the property, there is a narrow stringer of galena, and a 1-inch stringer of sphalerite, chalcopyrite, tetrahedrite, and pyrrhotite.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Hyder

Comments on the workings information

  • Workings / Exploration = Prospect was explored by opencuts, probably in the 1920's.? Early assays of samples of pyritized tuffaceous country rock showed as much as 1 oz Au and 3-4 oz Ag per ton.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010222
USGS Alaska Resource Data File ARDF BC060

Bibliographic references

  • Deposit

    Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.

  • Deposit

    Smith, J.G., 1973, A Tertiary lamprophyre dike province in southeastern Alaska: Canadian Journal of Earth Sciences, v. 10, p. 408-420.

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.

  • Deposit

    Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

  • Deposit

    Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Buddington, 1929

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = Claims originally staked in 1920 and restaked in 1925 (Buddington, 1929, p. 90).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey