Sidney Mine

The Sidney Mine is a lead, silver, and zinc mine located in Shoshone county, Idaho at an elevation of 3,366 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

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Site Name

Primary: Sidney Mine

Commodity

Primary: Lead
Primary: Silver
Primary: Zinc
Secondary: Copper
Secondary: Gold

Location

State: Idaho
County: Shoshone
District: Yreka

Land Status

Land ownership: BLM Administrative Area
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

Type: Underground

Ownership

Owner Name: Cominco American Resources Inc
Percent: 100.0
Home Office: Spokane, Washington
Info Year: 1986
Years: 1981 - 1985

Owner Name: Asarco, Inc
Percent: 100.0
Home Office: New York
Info Year: 1977
Years: 1977 -

Owner Name: United States Antimony Corp.
Percent: 50.00
Home Office: Thompson Falls, Montana
Info Year: 1978
Years: 1975 - 1977

Owner Name: Sidney Leasing Co., Inc.
Percent: 100.0
Home Office: Kellogg, Idaho
Info Year: 1948
Years: 1922 - 1938

Owner Name: International Mineral Engineers, Inc.
Percent: 50.00
Home Office: Silverton, Idaho
Info Year: 1978
Years: 1975 - 1977

Owner Name: Sidney Mining Co.
Percent: 100.0
Home Office: Dalton Gardens, Idaho
Info Year: 2005
Years: 1910 -

Production

Year: 1983
Time Period: 1921-1967
Mined: 971774.000 mt
Material type: Ore Milled

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: HYDROTHERMAL VEIN AND REPLACEMENT
Plant Type: Beneficiation (Mill)
Plant Subtype: Flotation
Operation Type: Underground
Mining Method: Filled Stopes - Horiz Cut and Fill W/Waste Rock
Milling Method: Flotation
Year First Production: 1921
Year Last Production: 1967
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: St. Joe Mountains

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Name: Sidney West
Form: PINCH AND SWELL

Name: Denver
Form: PINCH AND SWELL

Name: Sidney East
Form: PINCH AND SWELL

Structure

Type: R
Description: Anticline striking WNW

Alterations

Alteration Type: L
Alteration Text: Uppermost portion of orebody oxidized.

Rocks

Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Tetrahedrite
Ore: Galena
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Cerussite
Ore: Smithsonite
Gangue: Chlorite
Gangue: Arsenopyrite
Gangue: Feldspar
Gangue: Pyrite
Gangue: Siderite
Gangue: Dolomite
Gangue: Calcite
Gangue: Quartz
Gangue: Magnesite
Gangue: Pyrrhotite
Gangue: Ankerite
Gangue: Muscovite
Gangue: Marcasite
Trace: Cubanite

Comments

Comment (Reserve-Resource): AVG LARGE TONNAGE OF BROKEN ROCK 6 - 8 % PB - ZN AND 1 OZ. AG / TON WAS LEFT IN STOPED AREAS

Comment (Development): Rainstorm in April, 1921 exposed an outcrop of high-grade lead oxide ore south of Denver (North) vein. Discovery confimed that fall by an adit driven or extended by Evans Gay. This was the Sidney West orebody.

Comment (Development): Mining by shrinkage stoping and cut-and-fill (with waste rock) methods.

Comment (Development): US Bureau of Mines in Sept. 1944 discovered the Sidney East orebody during a 2,670-foot diamond drilling program.

Comment (Location): NEAR HEAD OF DENVER CREEK CANYON, ABOUT 1.5 MI ABOVE ITS CONFLUENCE WITH E PINE CREEK SIDNEY PROPERTY IS BETWEEN NABOB AND NEVADA STEWART PROPERTY.

Comment (Production): Production reported to US Bureau of Mines from Mitchell and Bennett (1983). Grade data from DMEA records.

Comment (Geology): BEDDING TRENDS NW - SE

Comment (Development): Property consists of 21 unpatented claims and 7 patented claims.

Comment (Deposit): This record includes data from duplicate records numbered 10009922 and 10073354, since deleted.

Comment (Orebody): The two orebodies are en echelon ore shoots in the same vein, separated by 122 meters of barren vein.

Comment (Production): Production reported to the USBM from Mitchell and Bennett (1983)

References

Reference (Deposit): Zartman, R. E., and Stacey, J. S., 1971 , Lead isotopes and mineralization ages in Belt Supergroup rocks, north-western Montana and northern Idaho: Economic Geology, v. 66 , p. 849 - 860

Reference (Deposit): Fryklund, V. C., Jr., 1964 , Ore deposits of the Coeur d'Alene district, Shoshone County, Idaho: US Geological Survey Professional Papar 445 , 103 p.

Reference (Deposit): Jones, E. L., Jr., 1919 , A Reconnaissance of the Pine Creek District, Idaho: US Geological Survey Bulletin 710-A , p. 1-36.

Reference (Deposit): Forrester, J. D., and Nelson, V. E., 1944 , Lead and Zinc Deposits of the Pine Creek area, Coeur d'Alene Mining Region, Shoshone Co., Idaho: US Geological Survey Strategic Mineral Investigations Preliminary Report., 27 p.

Reference (Deposit): Gammell, R. M., and Hundhausen, R. J., 1948 , Sidney mine, Pine Creek area, Shohsone County, Idaho: US Bureau of Mines Report of Investigations 4188 , 11 p.

Reference (Deposit): Callaway, Fred W., 1924, revised 1925, Report on the property of the Sidney Mining Co., Shoshone County, Idaho: Kellogg, Idaho, Bunker Hill & Sullivan Mining and Concentrating Co., 41 p. [University of Idaho, Speical Collections, Bunker Hill Collection, Box 99]

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.

Reference (Deposit): Gin, Thon Too, 1953, Mineralization in the Pine Creek area, Coeur d'Alene mining region, Idaho: Salt Lake City, Utah, University of Utah, PhD dissertation, 73 p. [Bulletin of the University of Utah, v. 50, n. 15, p. 179-180]

Reference (Deposit): Shannon, E.V., 1926, The minerals of Idaho: US National Museum Bulletin 131, 483 p.

Reference (Deposit): Leigh, R.E., 1953, Memorandum on the Sidney mine, Pine Creek area, Shoshone County, Idaho: Butte, Montana, Anaconda Copper Mining Co., Geological Department, 5 p. [Anaconda Archives #22022.01]

Reference (Deposit): Campbell, Arthur Byron, 1949, The paragensis of the lead-zinc ores, Pine Creek district, Shoshone County, Idaho: St. Louis, Washington University, MA thesis, 64 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.