The Sherman MIne is a lead and silver mine located in Lake county, Colorado at an elevation of 12,680 feet.
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
Elevation: 12,680 Feet (3,865 Meters)
Commodity: Lead, Silver
Lat, Long: 39.2281, -106.17500
Map: View on Google Maps
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Sherman MIne MRDS details
Site Name
Primary: Sherman MIne
Secondary: Sherman Tunnel
Secondary: Day Mines' Mine
Secondary: Leadville Corporation Mine
Secondary: Sherman-Hilltop Property
Secondary: McGuire Tunnel(?)
Commodity
Primary: Lead
Primary: Silver
Secondary: Zinc
Secondary: Gold
Location
State: Colorado
County: Lake
District: Horseshoe District
Land Status
Land ownership: Mixed
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Type: Patented
Type: Private Lease
Type: Located Claim
Workings
Type: Underground
Ownership
Owner Name: Leadville Corp, 2851 S. Parker Rd #610, Aurora, Co 80014
Company ID: 500604
Percent: 100.0
Home Office: Colorado
Info Year: 1994
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Open Stope
Milling Method: Flotation
Year First Production: 1975
Discovery Year: 1968
Years of Production:
Organization:
Significant: Y
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Polymetallic replacement
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Dolomite
Role: Host
Age Type: Host Rock
Age Young: Mississippian
Analytical Data
Not available
Materials
Ore: Acanthite
Ore: Chalcocite
Ore: Galena
Ore: Silver
Ore: Sphalerite
Ore: Tetrahedrite
Gangue: Quartz
Gangue: Pyrite
Gangue: Pyrolusite
Gangue: Huntite
Gangue: Dolomite
Gangue: Barite
Gangue: Siderite
Comments
Comment (Location): Near the head of Iowa Gulch on the west side of Mount Sherman, about 6-1/2 miles ESE of Leadville, in NW/4 sec 36, T 79 W, R 9 S.
Comment (Ownership): HECLA MINING CO WITHDREW IT LEASE OF THE PROPERTY IN 1985. LEADVILLE CORP IS SOLE OWNER.
Comment (Deposit): THE MIXED SURROUNDING LAND DOMAIN IS NATIONAL FOREST AND PATENTED MINING CLAIMS. THE WORKING SEASON IS CODED AS AL YR HOWEVER IN WINTER MINERS ARE FREQUENTLY SNOWED INTO OR LEAVE THE PROPERTY.
Comment (Development): Hilltop and Sherman mines and surrounding claims (about 3600 acres) consolidated by mining company. (Sunshine files, 2000)
Comment (Production): About 1 million ounces of silver, plus lead and zinc(?), was recovered annually from ore from the Sherman mine, 1974-1984. (Sunshine files, 2000)
Comment (Production): Production over an 11-year period totaled 670,000 tons of ore that yielded 9,100,000 oz silver. (Tschauder, et.al.)
Comment (Reserve-Resource): About 6500 tons of material at 23 oz/ton silver. (Sunshine files, 2000)
Comment (Economic Factors): ORE MINED BY OPEN STOPES AND MINE SMALL LOCALIZED MINERALIZED PODS. ONE HAULAGE DRIFT IS BEING DRIVEN 1.6 KM SOUTH TO HILLTOP MINE OREBODY.
Comment (Geology): Silver-lead ore deposits in open-space karst system.
Comment (Geology): MINERALIZATION OCCURRED DURING AND FOLLOW THE SAWATCH UPLIFT.
References
Reference (Development): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
Reference (Deposit): Bloom, D. N., 1965, Geology of the Horseshoe district and ore deposits of the Hilltop mine, Park County, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation, 211 p.
Reference (Reserve-Resource): DAY MINES 1979 ANNUAL REPORT
Reference (Deposit): Emmons, S.F., Irving, J.D., and Loughlin, G.F., 1927, Geology and ore deposits of the Leadville mining district, Colorado: U.S. Geological Survey Professional Paper 148, 368 p.
Reference (Deposit): Tweto, O., 1968, Leadville district, Colorado, in Ridge, J. D., editor, Ore deposits of the United States, 1933-1967 (Graton-Sales volume): New York, American Institute of Mining Engineers, p. 681-705.
Reference (Deposit): THE MINING RECORD, VOL. 107, N34, AUG., 21, 1996, P14.
Reference (Deposit): Johansing, R. J., and Thompson, T. B., 1990, Geology and origin of Sherman-type deposits, central Colorado: Economic Geology Monograph 7, p. 367-394.
Reference (Deposit): Tschauder, R. J., Landis, G. P., and Noyes, R. R., 1990, Late Mississippian karst caves and Ba-Ag-Pb-Zn mineralization in central Colorado: Part I. Geologic framework, mineralogy, and cave morphology: Economic Geology Monograph 7, p. 308-338.
Reference (Geology): DAY MINES ANNUAL REPORTS 1977, 1978 & 1979.
Reference (Geology): GENTRY, DON W. LEAD & ZINC DEPOSITS IN COLORADO AND WYOMING,
Reference (Geology): BU MINES CONTRACT NO. G0264005, 1976, PP. 49-52
Reference (Deposit): Behre, C. H., Jr., 1953, Geology and ore deposits of the west slope of the Mosquito Range (Colorado): U.S. Geological Survey Professional Paper 235, 176 p.
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