Chalet Mountain

The Chalet Mountain is a tungsten 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: Chalet Mountain

Commodity

Primary: Tungsten
Secondary: Copper

Location

State: Alaska
District: Kodiak

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: W skarn

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Chalcopyrite
Ore: Pyrite
Ore: Scheelite

Comments

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = At the time of Seitz's visit in 1963 the showings had been exposed by open cuts and pits. Six channel samples ranged in grade from 0.06 to 1.75 percent tungsten oxide.

Comment (Deposit): Model Name = W skarn, W vein (Cox and Singer, 1986; models 14a, 15a)

Comment (Geology): Age = Cretaceous or younger

Comment (Deposit): Model Number = 14a, 15a

Comment (Geology): Geologic Description = Scheelite occurs as minute disseminated grains and veinlets in siliceous zones in Cretaceous graywacke, as thin coatings on the edges of quartz veins, and in fractures. There are abundant quartz-scheelite veins in the vicinity of the disseminated scheelite. The disseminated scheelite is generally confined to pod-shaped bodies up to several feet thick and only a few feet long. One mineralized zone, however, is approximately 100 feet in length. Seitz (1963) located 15 separate scheelite showings trending roughly N. 45 E. generally parallel to bedding. These occur within an area measuring approximately 300 by 1600 feet. Rose and Richter (1967) cite a personal communication from Jasper, who found 4 additional showings, thus extending the mineralization an additional 2000 feet to the southwest. Four channel samples of disseminated scheelite collected by Seitz assayed 0.06 to 0.56 percent tungsten oxide. Two samples collected by Jasper (cited by Rose and Richter, 1967) assayed 1.75 and 0.28 percent tungsten oxide over 35 and 42 inches. The origin of the disseminated scheelite is unknown although it has been suggested (Seitz, 1963) that it and the scheelite-quartz veins are somehow related to nearby intrusive bodies or to other unexposed plutons. Kodiak Exploration sent a sample from this area or from their Cornelius Creek property (KD026) to Wah Chang Corporation for analysis and examination. They identified the so-called siliceous material containing the disseminated scheelite as tactite or skarn (Jasper, 1955).

Comment (Reference): Primary Reference = Rose and Richter, 1967

References

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Kodiak quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-460, 1 map sheet, scale 1:250,000.

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Seitz, J.F., 1963, Tungsten prospect on Kodiak Island, Alaska, in Contributions to Economic Geology of Alaska: U.S. Geological Survey Bulletin 1155, p. 72-77.

Reference (Deposit): Rose, A.W., and Richter, D.H., 1967, Geology and stream sediment geochemistry of Anton Larsen Bay and vicinity, Kodiak Island, Alaska: State of Alaska Department of Natural Resources, Division of Mines and Minerals, Geologic Report 31, 10 p., 1 map sheet, scale 1:63,360.

Reference (Deposit): Rose, A.W., and Richter, D.H., 1967, Geology and stream sediment geochemistry of Anton Larsen Bay and vicinity, Kodiak Island, Alaska: Alaska Division of Mines and Minerals Geologic Report 31, 10 p., 1 sheet, scale 1:63,360.

Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

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