Mineral resources of the Hawk Mountain Wilderness Study Area, Harney County, Oregon

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Abstract

The Hawk Mountain Wilderness Study Area encompasses apporoximately 69 640 acres along the Oregon-Nevada State line. No resources, mines or claims were observed in the study area nor are there are records of production or oil, gas, or geothermal leases for the study area. The study area is underlain by Tertiary volcanic rocks that are locally hydrothermally altered and silicified. In this region, altered rocks may host deposits of mercury, silver, and gold and industrial minerals (clay and zeolite). In addition, the geologic setting of the study area is favorable for rhyolite-hosted tin deposits. Geochemical data indicate that the west half of the study area has low resource potential for gold in epithermal deposits. Low potential for uranium in localized, small-volume deposits is associated with the tuffaceous sedimentary rock exposed in the south-central and eastern parts of the study area. Secondary uranium minerals (carnotite and schroekingerite?) are reportedly associated with opalized zones in tuffaceous lacustrine sedimentary rock exposed south of the study area. -from Authors

Original languageEnglish (US)
JournalUS Geological Survey Bulletin
Volume1740 F
StatePublished - Jan 1 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geology

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