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  1. Geology and geochemistry of hydrothermal alteration, eastern portion of the North Santiam mining area

    The Ruth Mine is a base-metal vein deposit near the eastern margin of a reported porphyry copper deposit in the Western Cascade Range in Oregon. Uplift of the Western Cascade Range has resulted in a deeply...

  2. Geology of the Salem Hills and the North Santiam River basin, Oregon

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    This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.

  3. Preliminary report on the reconnaissance geology of the upper Clackamas and North Santiam Rivers area, Cascade Range, Oregon

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    This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.