Mount Hope

Region West, Southwest
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area The focus area encompasses the Mount Hope resource. A 15 km buffer was applied to cover possible undiscovered occurrences in adjacent areas. Potentially significant inventories of W and Sn, potentially recoverable during Mo processing(?).
Identified resources Identified molybdenum resource; historical production of copper, gold, lead, silver, and zinc.
Production Total production valued at $1,335,393 as of 1964, with values primarily in Pb, and Zn, with lesser Cu, Au, and Ag.
Status Past mining.
Estimated resources Proven and Probable Reserve: 985 Mt at 0.07% MoS2; Measured and Indicated resource: 65 Mt at 0.033% MoS2 (Huss and others, 2014).
Geologic maps Matson (1946), scale 1:2,640.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Mt. Hope rhyolite dome; Garden Valley Limestone.
Deposits Mount Hope mine (MRDS dep_id: 10044732).
Evidence from mineral occurrences MRDS; Ludington and Plumlee (2009).
Geochemical evidence Zinc Pb, Cu, and Ag produced (1941-1947) from replacement deposits in Paleozoic limestone adjacent to Mo-mineralized Mt. Hope rhyolitic intrusions.
Geophysical evidence Unknown.
Evidence from other sources No data.
Comments Ore occurs as replacement deposits in limestone roof pendants. Very little public geochemical data exist for the Mount Hope deposit. Enrichment of essentially all critical mineral commodities listed here (except for Zn) is inferred from the mineral system/deposit type table (Hofstra and Kreiner, 2020) and requires further testing. Possible Mo resource, and REE, Re, W, and Sn are potential byproducts. Polymetallic replacement mineralization would have Cu, Zn, and Ag, with Ga, Ge, Bi, As, Sb as potential byproducts.
Cover thickness and description Unknown.
Authors Peter G. Vikre, Ryan D. Taylor, Albert H. Hofstra, Joshua M. Rosera.
New data needs Geophysics.
Geologic mapping and modeling needs None requested at this time.
Geophysical survey and modeling needs High-resolution, Rank 1 aeromagnetic and radiometric surveys.
Digital elevation data needs Lidar inadequate.