The Senator Stewart Mine is a zinc, silver, and lead mine located in Shoshone county, Idaho.
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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Senator Stewart Mine MRDS details
Site Name
Primary: Senator Stewart Mine
Secondary: Stewart
Commodity
Primary: Zinc
Primary: Silver
Primary: Lead
Secondary: Copper
Tertiary: Gold
Location
State: Idaho
County: Shoshone
District: Yreka
Land Status
Land ownership: Private
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
Not available
Workings
Not available
Ownership
Owner Name: Bunker Hill Co.
Percent: 100.0
Home Office: Kellogg, Idaho
Years: 1956 -
Owner Name: Day Mines, Inc.
Percent: 100.0
Home Office: Wallace, Idaho
Years: 1946 - 1949
Owner Name: Decker Development Co.
Percent: 100.0
Home Office: Kellogg, Idaho
Years: 1927 - 1928
Owner Name: Silver Bowl, Inc.
Percent: 100.0
Home Office: Kellogg, Idaho
Years: 1942 -
Owner Name: Decker Development Co.
Percent: 100.0
Home Office: Kellogg, Idaho
Years: 1928 - 1929
Owner Name: Stewart Silver Lead Co.
Percent: 100.0
Home Office: New York
Years: 1923 - 1928
Owner Name: Stewart Mining Co.
Percent: 100.0
Home Office: New York
Years: 1902 - 1923
Production
Year: 1983
Time Period: 1904-1951
Mined: 945118.000 mt
Material type: Ore
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: HYDROTHERMAL VEIN AND REPLACEMENT
Plant Type: Beneficiation (Mill)
Plant Subtype: Gravity
Operation Type: Underground
Milling Method: Gravity
Year First Production: 1904
Year Last Production: 1951
Discovery Year: 1896
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Coeur D'Alene Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Name: Senator Stewart Vein
Form: PINCH AND SWELL
Structure
Type: R
Description: Deposit within overturned NE limb of a WNW-trending anticline.
Type: L
Description: NE-trending faults that link the Osburn and West Faults.
Type: R
Description: Osburn Fault and West Fault, WNW striking shears.
Alterations
Alteration Type: L
Alteration Text: Upper levels of orebody oxidized.
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: LESS THAN 1 OZ AG TO 1 % PB IN UPPER LEVELS AND MORE THAN 1 OZ IN THE LOWER LEVELS.
Materials
Ore: Sphalerite
Ore: Galena
Ore: Tetrahedrite
Gangue: Pyrite
Gangue: Ankerite
Gangue: Siderite
Trace: Pyromorphite
Comments
Comment (Production): Ore tonnage and recovered metals reported by Mitchell and Bennett (1983) from USBM production data; ore grades calculated from USBM data and Stewart Mining Co. annual reports.
Comment (Geology): Host rocks variously identified as Burke Formation and St. Regis Formation quartzite. Early workers apparently did not recognize that stratigraphy was overturned. Rocks traditionally assigned to the St. Regis-Revett transition zone are now recognized as upper Revett Formation.
Comment (Location): 2000 FT W OF THE CALEDONIA
Comment (Workings): MINE OPENED IN 1904 BY A 600 - FT. TUNNEL AND SECOND TUNNEL 250 FT BELOW THESE WORKINGS
Comment (Orebody): Orebody pinched out 213 meters below main adit level. Siderite and barite increase in abundance with depth as lead-silver grades increase.
References
Reference (Deposit): Kennedy, G.A., 1912, Report on the Steart mine, property of the Stewart Mining Company, Coeur d'Alene minind district, Shoshone County, Idaho, 34 p.; supplementary report, 1913, 29 p.
Reference (Deposit): RANSOME, F. L., AND CALKINS, F. C., 1908 , THE GEOLOGY AND ORE DEPOSITS OF THE COEUR D'ALENE DISTRICT, IDAHO: USGS PROF. PAPER 62 , 203 P.
Reference (Deposit): UMPLEBY, J. B., AND JONES, E. L., JR., 1923 , GEOLOGY AND ORE DEPOSITS OF SHOSHONE COUNTY, IDAHO: USGS BULL. 732 , 156 P.
Reference (Production): Mitchell, V.E., and Bennett, E.H., 1983, Production statistics for the Coeur d'Alene mining district, Shoshone County, Idaho, 1884-1980: Idaho Geological Survey Technical Report 83-3, 33 p.
Idaho Gold
"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more: Where to Find Gold in Idaho.
