Whistler

The Whistler is a copper, barium-barite, gold, zinc, 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: Whistler

Commodity

Primary: Copper
Primary: Barium-Barite
Primary: Gold
Primary: Zinc
Primary: Lead
Secondary: Iron

Location

State: Alaska
District: Yentna

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

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Carbonate, sericite, clay and silica. Zonation from propylitic to sericitic to silicic observed in one area.

Rocks

Role: Host
Age Type: Host Rock
Age Old: Late Jurassic

Analytical Data

Not available

Materials

Ore: Barite
Ore: Chalcopyrite
Ore: Galena
Ore: Gold
Ore: Pyrite
Ore: Sphalerite
Gangue: Chlorite
Gangue: Magnetite
Gangue: Quartz

Comments

Comment (Commodity): Gangue = Carbonate

Comment (Deposit): Model Name = Gold-copper porphyry system(?) or feeder to a volcanogenic system(?)

Comment (Deposit): Other Comments = Volcanic lithologies may be same age as the volcanic rocks mapped by Reed and Nelson (1980) in the Long Lake Hills to the northeast.

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Unknown age but cut Tertiary or possibly Cretaceous host rocks.

Comment (Geology): Age = Host rock is Tertiary - Cretaceous.

Comment (Reference): Primary Reference = Reed and Elliott, 1970; Bundtzen and others, 1989

Comment (Workings): Workings / Exploration = Exploration work included: silt sampling, mapping, rock chip geochemical sampling, grid soil sampling, grid VLF, magnetic and IP geophysical surveys, and diamond drilling (Cominco American Incorporated, unpublished reports, 1987-1990).

Comment (Geology): Geologic Description = At this locality fine-grained feldspar-hornblende porphyritic hypabyssal andesite intrudes undifferentiated sedimentary rocks of the Mesozoic Kahiltna terrane and/or the Tertiary Matanuska Formation. Mineralization, contained within the intrusive rocks, includes stockwork chalcopyrite-quartz-magnetite with elevated gold values; vein and joint controlled sulfide-barite-silica mineralization; and chalcopyrite with minor sphalerite in silcified andesite. The prospect is defined by a 500 foot by 800 foot, circular magnetic high (Cominco American Incorporated, unpublished reports, 1987-1990). Bundtzen and others (1989) reported a large, low-grade gold and base metal resource with a 300 foot drill intercept of 0.22% copper and 0.033 oz/ton gold. Unknown age. Tertiary(?) or possibly Cretaceous.

References

Reference (Deposit): Reed, B.L., and Elliott, R.L., 1970, Reconnaissance geologic map, analyses of bedrock and stream sediment samples, and an aeromagnetic map of parts of the southern Alaska Range: U.S. Geological Survey Open-file Report 70-271, 24 p., 4 sheets, scale 1:250,000.

Reference (Deposit): Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.

Reference (Deposit): Bundtzen, T.K., Swainbank, R.C., Deagen, J.R., Moore, J.L., 1990 , Alaska's Mineral Industry 1989: Alaska Division of Geological & Geophysical Surveys, Special Report 44, 100 p.

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