White Cloud mineral 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 Historical mining district (now a wilderness area).
Identified resources Historical production of copper, gold, lead, silver, and zinc.
Production Greyhound mine (1916-1981): 5,689 tons of ore; 42.43 oz Au; 13,148 oz Ag; 682 lbs Cu; 26,994 lbs Pb, and 4,511 lbs Zn (Mitchell, 1997a).
Status Past mining.
Estimated resources Unknown.
Geologic maps Fisher and Johnson (1984), scale 1:175,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Skarns commonly are developed in carbonate-rich rocks adjacent to Tertiary plutons in the southern part of the study area. Quartz-carbonate fissure veins cutting intrusive rocks can carry sulfides.
Deposits Boulder Creek deposit (MRDS dep_id: 10071179), Greyhound Ridge (MRDS dep_id: 10216544), Bonanza mine (MRDS dep_id: 10071091), Billy John 1-2 (MRDS dep_id: 10216548), Confidence mine (MRDS dep_id: 10071176), Deer Trail mine (MRDS dep_id: 10070959).
Evidence from mineral occurrences MRDS.
Geochemical evidence Fisher, May and McIntyre (1983).
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Cover thickness and description Exposed at the surface.
Authors Virginia S. Gillerman, Reed S. Lewis, Christopher A. Tate.
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 aeroradiometric surveys.
Digital elevation data needs Lidar in progress over central part of focus area; incomplete over rest.