Copper-silver deposits of the Revett Formation, Montana and Idaho: Origin and resource potential

Thomas P. Frost; Michael L. Zientek

doi:10.3133/fs20063072

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Copper-silver deposits of the Revett Formation, Montana and Idaho: Origin and resource potential

Thomas P. Frost·Michael L. Zientek

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Abstract

The Revett Formation of northern Idaho and western Montana contains major stratabound copper-silver deposits near Troy, Rock Creek, and Rock Lake, Montana. To help the U.S. Forest Service (USFS) meet its goal of integrating geoscience information into the land-planning process, U.S. Geological Survey (USGS) scientists recently completed a compilation of regional stratigraphy and mineralogy of the Revett Formation and a mineral resource assessment of Revett-type copper-silver deposits. The USGS assessment indicates that a large area of USFS-administered land in northwestern Montana and northern Idaho may contain significant undiscovered Revett-type copper-silver deposits.

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Source-reported bounding extent: 47.35° to 48.3833° latitude; -116.3667° to -115.1167° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Thomas P. Frost, Michael L. Zientek. 2006. Copper-silver deposits of the Revett Formation, Montana and Idaho: Origin and resource potential. https://doi.org/10.3133/fs20063072

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