The Bueno Mine is a gold and silver mine located in Boulder county, Colorado.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Bueno Mine MRDS details
Site Name
Primary: Bueno Mine
Secondary: Buena
Secondary: Wano Group
Commodity
Primary: Gold
Primary: Silver
Secondary: Copper
Tertiary: Fluorine-Fluorite
Tertiary: Tungsten
Location
State: Colorado
County: Boulder
District: Jamestown District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Alkaline Au-Te (Au-Ag-Te veins)
Orebody
Not available
Structure
Type: L
Description: pipe-like stockworks at vein interections and along veins
Alterations
Alteration Type: L
Alteration Text: silicified or sericitized wall rock
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Krennerite
Ore: Gold
Ore: Sylvanite
Gangue: Fluorite
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Commodity): Considerable fluorite in places, may be recoverable.
Comment (Deposit): GOLD MINE. TUNGSTEN OCCURED IN ONE POCKET ONLY, ON THE 3RD LEVEL
Comment (Geology): Six major and several minor veins are exposed; important ore veins strike NE and dip steeply NW. Large pipe-like orebodies occur at vein intersections.
Comment (Location): Sec. 24, T2N, R 72W, about 1 mile NW of Jamestown.
Comment (Production): The most productive gold mine in the district, the Bueno is credited with $2,000,000 from 1879 to 1943, mostly in gold. Additional exploration and mining during the 1960s, 70s, and 80s probably resulted in limited gold production. The mine has seven levels, from 7500 to 8050 feet in elevation.
Comment (Reserve-Resource): Sunshine Mining Co. files (Boulder County - Jamestown Project) contain several reports, dated from 1930 to 1992, that describe the Bueno mine workings, geology, and facilities, and include results of drilling and sample assays, discussions of ore reserves, and exploration targets. In 1992 Sunshine declined to do additional work.
References
Reference (Deposit): CONSV. DIV. COMP. DATE, 1,62
Reference (Deposit): Lovering, T. S., and Goddard, E. N., 1950, Geology and ore deposits of the Front Range, Colorado: U.S. Geological Survey Professional Paper 223, 319 p.
Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
Reference (Deposit): Vanderwilt, J.W., 1947, Mineral resources of Colorado: State of Colorado Mineral Resources Board, 547 p.
Reference (Deposit): STATE OF COLO. METAL MINING FUND BOARD, 1960, TUNGSTEN MINES OF COLO.
Colorado Mining Photos
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