Scraper Springs

Region West, Southwest
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area 10 km buffer on zunyite occurrence in small lithocap deposit with Al, K2SO4, H2SO4, ± Ga in alunite (zunyite) (latitude 41.3685, longitude -116.6526).
Identified resources Historical production of silver.
Production Unknown.
Status Past mining; gold exploration ~2005-2007.
Estimated resources Unknown.
Geologic maps Coats (1987), scale 1:250,000; Stewart and Carlson (1976), scale 1:250,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Eocene diorite that is variably brecciated and hydrothermally altered (Cantor, 2012).
Deposits Zunyite lode (MRDS dep_id: 10221546).
Evidence from mineral occurrences MRDS; Cantor (2012).
Geochemical evidence Anomalously high Bi, Te, In, and Mo reported in a soil survey. Fluorine is enriched in zones of advanced argillic alteration (Cantor, 2012).
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Comments Molybdenum-F soil anomaly associated with Eocene intrusion. Molybdenite observed in some drillholes and potassic alteration suggest potential for a porphyry Mo deposit beneath the advanced argillic alteration. Enrichment of Sb, As, Ge, Mn, and Zn inferred from the mineral system/deposit type table (Hofstra and Kreiner, 2020).
Cover thickness and description Mostly surficial, but drillhole evidence indicates the argillic cap is underlain by a porphyry-type system (Cantor, 2012).
Authors John L. Muntean, Joshua M. Rosera.
New data needs Geophysics.
Geologic mapping and modeling needs None requested at this time.
Geophysical survey and modeling needs High resolution aeromagnetic and aeroradiometric coverage.
Digital elevation data needs Lidar in progress (GeoDAWN).