Lava Creek mining district

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

Information leading to the delineation of this focus area

Basis for focus area Outline of mining district(s) and mineral occurrences.
Identified resources Historical production of gold, lead, silver, and zinc.
Production Last Chance mine (1943-1945): 1,174,506 lbs Pb, 2,007,769 lbs Zn, 31,000 oz Ag (Anderson, 1947c); Champagne mine (1989-1993): approximately 56,000 troy oz Au, and 500,000 oz Ag (Bennett and Gillerman, 1993, draft Regional Developments paper on Idaho Geological Survey website).
Status Past mining.
Estimated resources Unknown.
Geologic maps Skipp and Kuntz (2009), scale 1:100,000; Skipp and Bollmann (1992), scale 1:24,000; Kuntz and others (2007), scale 1:100,000; Anderson (1929), scale 1:63,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Vein deposits in the Lava Creek district are confined to a zone of structural weakness in Tertiary volcanic rocks with facilitated intrusion of Miocene-age magma (Anderson, 1947c).
Deposits Last Chance mine (MRDS dep_id: 10110454), Hornsilver mine (MRDS dep_id: 10071907), Champagne mine (MRDS dep_id: 10289933).
Evidence from mineral occurrences MRDS.
Geochemical evidence Multi-media geochemistry in Adrian and others (1990). Anderson (1947c) identified Fe, Zn, Pb, Cu, Sn, Bi, Ag, and Au as metals in deposits.
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Comments Primarily a gold area with some base metals. Magmatic hydrothermal but with more porphyry-style alteration than most districts. One W mine in IGS database.
Cover thickness and description Oxidized and enriched silver ores were first discovered at the surface; primary base-metal sulfides are at greater depth.
Authors Virginia S. Gillerman, Reed S. Lewis, Christopher A. Tate.
New data needs High resolution geophysics, lidar.
Geologic mapping and modeling needs None requested at this time.
Geophysical survey and modeling needs High resolution, Rank 1 aeromagnetic and aeroradiometric coverage.
Digital elevation data needs Lidar in progress over northern portion of the focus area; needed elsewhere.