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Sidney Mine

Past Producer in Shoshone county in Idaho, United States with commodities Zinc, Lead, Silver, Copper, Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Reserves and resources
  21. Workings at the site
  22. Links to other databases
  23. Bibliographic references
  24. General comments
  25. Reporter information

Geologic information

Identification information

Deposit ID 10073428
MRDS ID W019506
Record type Site
Current site name Sidney Mine

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
Ore Body -116.19383, 47.48987 (WGS84) 5 MI SW OF KELLOGG
(click for info)
-116.19383, 47.48987 (WGS84) 1104 East side of Denver Creek
-116.19383, 47.48987 (WGS84) 1088 East side of Denver Creek
-116.19383, 47.48987 (WGS84) 1026 West side of Red Cloud Creek
-116.19383, 47.48987 (WGS84) 996 In Red Cloud Creek

Site location context

Political divisions (FIPS codes)

Shoshone(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Masonia(quadrangle 1:24,000 scale)

Saint Maries(quadrangle 1:100,000 scale)

Spokane(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Coeur d'Alene(hydrologic unit)

Spokane(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management ID)

Bureau of Land Management ID BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Idaho Shoshone

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 048N 002E 22,23,26,27 Idaho

Comments on the location information

  • 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.

Commodities

Commodity Importance
Zinc Critical Primary
Lead Primary
Silver Primary
Copper Secondary
Gold Secondary

Materials information

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

Alteration

  • (Local) Uppermost portion of orebody oxidized.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Prichard Formation
    Rock description Prichard Formation
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Metamorphic Rock > Metasedimentary Rock > Meta-Argillite
    Rock unit name Prichard Formation
    Rock description Prichard Formation

Economic information

Geologic structures

Type of structure Regional
Structure description Anticline striking WNW

Ore body information

  • Name Sidney West
    General form PINCH AND SWELL
    Strike 70SW
    Dip 70SW
    Length 274
    Width 1.83
    Depth to top 0
    Depth to bottom 305
  • Name Sidney East
    General form PINCH AND SWELL
    Strike 80-85SW
    Dip 80-85SW
    Length 113
    Width 2.74
    Depth to top 0
    Depth to bottom 320
  • Name Denver
    General form PINCH AND SWELL
    Strike 90
    Dip 90
    Length 183
    Width 0.91

Comments on the ore body information

  • The two orebodies are en echelon ore shoots in the same vein, separated by 122 meters of barren vein.

Controls for ore emplacement

  • Orebodies at the intersection of favorable beds with a N80W trending fault zone.

Comments on the geologic information

  • BEDDING TRENDS NW - SE

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1896
Discoverer L.W. Gay, E.S. Gay, and Harvey Ross
Mining method Filled Stopes - Horiz Cut and Fill W/Waste Rock
Year of first production 1921
Year of last production 1967
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation
Production years 1921-1923, 1925-1932, 1935-1938, 1942-1960, 1962, 1967

Mining district

District name Yreka

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Sidney Mining Co.
    Interest 100
    Home office Dalton Gardens, Idaho
    Year 2005
    First year 1910
  • Type Lessee
    Owner Sidney Leasing Co., Inc.
    Interest 100
    Home office Kellogg, Idaho
    Year 1948
    First year 1922
    Last year 1938
  • Type Lessee
    Owner International Mineral Engineers, Inc.
    Interest 50
    Home office Silverton, Idaho
    Year 1978
    First year 1975
    Last year 1977
  • Type Lessee
    Owner United States Antimony Corp.
    Interest 50
    Home office Thompson Falls, Montana
    Year 1978
    First year 1975
    Last year 1977
  • Type Lessee
    Owner Asarco, Inc
    Interest 100
    Home office New York
    Year 1977
    First year 1977
  • Type Lessee
    Owner Cominco American Resources Inc
    Interest 100
    Home office Spokane, Washington
    Year 1986
    First year 1981
    Last year 1985

Production statistics

  • Year 1983
    Period 1921-1967
    Material Ore Milled
    Ore mined 971774mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered metal Zinc Zinc 77633mt 10wt-pct

Comments on the production information

  • Production reported to US Bureau of Mines from Mitchell and Bennett (1983). Grade data from DMEA records.
  • Production reported to the USBM from Mitchell and Bennett (1983)

Reserves and resources

  • Type In-situ
    Estimate year 1944
    Measured 4118mt ore
    Indicated 468mt ore
    Inferred 6074mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 7 wt-pct Lead Major 1944
    Zinc Zn 15 wt-pct Zinc Major 1944

Comments on the reserve resource information

  • AVG LARGE TONNAGE OF BROKEN ROCK 6 - 8 % PB - ZN AND 1 OZ. AG / TON WAS LEFT IN STOPED AREAS

Workings at the site

  • Type of workings Underground
    Name of workings Total
    Overall depth 427
    Overall length 12922
  • Type of workings Underground
    Name of workings No. 1 Adit
    Length 168
  • Type of workings Underground
    Name of workings No. 3 Adit
    Length 236
  • Type of workings Underground
    Name of workings No. 5 Adit (Main Haulage)
    Length 731
  • Type of workings Underground
    Name of workings No. 6 Adit
    Length 457
  • Type of workings Underground
    Name of workings Red Cloud Adit (Main Haulage)
    Length 2021
    Overall depth 274
  • Type of workings Underground
    Name of workings Old Incline Shaft (5 to 8 Levels)
    Length 156
  • Type of workings Underground
    Name of workings Winze From Red Cloud Adit
    Length 168

Comments on development

  • Property consists of 21 unpatented claims and 7 patented claims.
  • 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.
  • Mining by shrinkage stoping and cut-and-fill (with waste rock) methods.
  • US Bureau of Mines in Sept. 1944 discovered the Sidney East orebody during a 2,670-foot diamond drilling program.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit This record includes data from duplicate records numbered 10009922 and 10073354, since deleted.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-75 Miller, Pat J. U.S. Geological Survey
Reporter 01-FEB-78 Hasler, J. William U.S. Geological Survey
Editor 01-FEB-78 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey
Reporter 26-SEP-94 Western Field Operations Center (WFOC) U.S. Bureau of Mines
Updater 22-FEB-05 Long, Keith R. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Asarco, Inc — acquired by Asarco LLC, subsidiary of Grupo México (2009)
    American Smelting and Refining Co. Filed Chapter 11 in 2005; acquired out of bankruptcy by Grupo México in 2009.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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