Beaucoup Group

The Beaucoup Group is a copper 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: Beaucoup Group
Secondary: Beaucoup Creek

Commodity

Primary: Copper
Secondary: Tin
Secondary: Silver

Location

State: Alaska
District: Chandalar

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Limestone
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Devonian

Name: Limestone
Role: Associated
Age Type: Associated Rock
Age Young: Late Devonian

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Malachite
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Geology): Geologic Description = Visible chalcopyrite and malachite in the remnants of a leached quartz vein in limestone within the Beaucoup Formation (Barker, 1978). Geochemical analysis of a sample of a mineralized quartz-calcite vein crosscutting siltstone and shale of Beaucoup Formation shows anomalous Ag (7 ppm) and Sn (10 ppm) (Cathrall and others, 1977b, sample 75 RR 120). No other descriptive information is available.

Comment (Reference): Primary Reference = Menzie and others, 1985

Comment (Workings): Workings / Exploration = Eight claims located in 1971 by Placid Oil, and exploration was said to be continuing in 1978 (Barker, 1978; Menzie and others, 1985).

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Menzie, W.D., Reiser, H.N., Brosgi, W.P., and Detterman, R.L., 1985, Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Investigations Map MF-879-C, 2 sheets, scale 1:250,000.

Reference (Deposit): Brosgi, W.P., Reiser, H. N., Dutro, J. T., Jr., and Detterman, R. L., 1979, Bedrock geologic map of the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-879-B, 2 sheets, scale 1:250,000.

Reference (Deposit): Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78

Reference (Deposit): Cathrall, J.B., Cooley, E.F., Detra, D.E., and O'Leary, R.M., 1977, A listing and statistical summary of spectrographic and chemical analysis of stream-sediment and rock samples from the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 77-244, 79 p.

Reference (Deposit): Maas, K.M., 1987, Availability of land for Mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Special Publication, 34 p., 33 sheets.

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