Sunset

The Sunset is a silver and lead mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Sunset

Commodity

Primary: Silver
Primary: Lead
Secondary: Barium-Barite

Location

State: Alaska
District: Hyder

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Galena
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Workings): Workings / Exploration = Early workings consisted of minor surface stripping.

Comment (Reference): Primary Reference = Buddington, 1929

Comment (Exploration): Status = Inactive

Comment (Geology): Geologic Description = The country rocks in the area of the Sunset prospect are pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group, which is underlain and locally intruded by the Triassic Texas Creek Granodiorite (Smith, 1977; Koch, 1996).? the deposit (Buddington, 1929, p. 109) consists of two sulfide-bearing quartz veins in Texas Creek Granodiorite near an isolated roof pendant of argillite and graywacke. One vein is 1-3 feet thick, has been traced on the surface for about 900 feet, and contains local concentrations of galena and pyrite. At one place, a shattered zone 20 feet wide contains about a five-foot width of quartz stringers carrying galena and pyrite. The other vein is about 3 feet thick, has been traced in outcrop for about 600 feet, and contains locally disseminated pyrite and a lens 4 inches thick and 12 feet long of pyrite, galena, and barite.

Comment (Deposit): Other Comments = Elliott and Koch (1981, p. 13. loc. 41) show silver as a queried commodity at the Sunset prospect, but do not mention silver in their description of the deposit. Silver also is not mentioned in any of the earlier published descriptions of the prospect.

Comment (Deposit): Model Name = Polymetallic veins

References

Reference (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.

Reference (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.

Reference (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.

Reference (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.

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