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Bulletin 2064–DD
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Geology of the Vienna Mineralized Area, Blaine and Camas Counties, Idaho

Prepared in cooperation with the Idaho Geological Survey, Idaho State University, and the University of Idaho

By J. Brian Mahoney and Michael C. Horn

The Vienna mineralized area in south-central Idaho was an important silver-lead-producing district in the late 1800s and has intermittently produced lead, silver, zinc, copper, and gold since that time. Two distinct vein types are present in a northwest- and east-trending conjugate shear-zone system. K-Ar dating of shear-zone sericite provides indications that mineralization in the Vienna mineralized area probably took place in the Late Cretaceous.

Version 1.0

Posted April 2005

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