Geology topics
G.A. Hahn
Publications and source records attributed to G.A. Hahn.
The occurrence of gold in siliceous Co-Cu exhalite deposits of the Blackbird mining district, Lemhi County, Idaho
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Open-File Report↗
Volcanogenic character of sediment-hosted Co-Cu deposits in the Blackbird mining district, Lemhi County, Idaho; an interim report
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Open-File Report↗