Alaska-Premier

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

Geologic information

Identification information

Deposit ID 10308775
MRDS ID A010228
Record type Site
Current site name Alaska-Premier
Related records 10304993, 10000191

Geographic coordinates

Geographic coordinates: -130.04375, 56.02577 (WGS84)
Relative position The Alaska-Premier prospect is in Section 25 at an elevation of about 1340 feet, approximately 0.2 mile southwest of Daly Creek (Elliott and Koch, 1981, p. 17, loc. 67). The location is accurate to within about 0.1 mile. Also see Additional Comments field, below.
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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
Arsenopyrite Ore
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue

Alteration

  • Sheared hostrocks are partly replaced by disseminated sulfides, and possibly silicified.

Mineral occurrence model information

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

Nearby scientific data

(1) -130.04375, 56.02577

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the Alaska-Premier prospect are pelitic metasedimentary and subordinate andesitic (greenstone) metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group; the Triassic 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, which cut all the other rocks (Smith, 1973, 1977, Koch, 1996). The deposit (Buddington, 1925, p. 74, 78-79; 1929, p. 85-86) is in greenstone, slate, and graywacke country rocks. It consists of sulfide-bearing quartz veinlets in shattered zones in three sheets of altered 'felsite,' which may be either quartz porphyry sills or a facies of the greenstone. The veins contain pyrite, sphalerite, galena, pyrrhotite, and chalcopyrite; selected samples reportedly assayed as high as 35 oz Au per ton. A 3-foot thick mineralized shear zone in a felsite sheet contains disseminated(?) pyrite, galena, sphalerite, chalcopyrite, tetrahedrite, pyrrhotite, and arsenopyrite. Assays of some of the mineralized felsite showed about 0.097-0.145 oz Au and about 1.0 oz Ag per ton. Lead-isotope studies of galena from the Alaska-Premier prospect (Maas and others, 1995, p. 254) indicate that the deposit is Jurassic in age, contemporaneous, at least in part, with island-arc volcanism in Hazelton time (Alldrick, 1993).
  • Age = Lead-isotope studies of galena from the Alaska-Premier prospect (Maas and others, 1995, p. 254) indicate that the deposit is Jurassic in age, contemporaneous, at least in part, with island-arc volcanism in Hazelton time (Alldrick, 1993).

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 = Property was explored by open cuts and developed by more than 200 feet of underground workings, probably mostly in the 1920's. Selected samples of sulfide-rich quartz veins reportedly assayed as high as 35 oz Au per ton. Assays of some of the sheared and mineralized felsite showed about 0.097-0.145 oz Au and 1.0 oz Ag per ton.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF BC067
USGS Mineral Resources Data System MRDS A010228
USGS Mineral Resources Data System MRDS D002760

Bibliographic references

  • Deposit

    Buddington, A.F., 1925, Mineral investigations in southeastern Alasaka: U.S. Geological Survey Bulletin 773, p. 71-139.

  • 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

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-922, 98 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

    Alldrick, D.J., 1993, Geology and metallogeny of the Stewart mining camp, northwestern British Columbia: British Columbia Department of Mines and Petroleum Resources Bulletin 85, 105 p., 2 plates.

  • Deposit

    Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.

  • 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 = Property probably originally staked in early 1920's. The Alaska-Premier site probably includes the old Ready Money and Alaska claims (Cobb, 1978, p. 92-93).

Reporter information

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