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Dayrock Mine

Past Producer in Shoshone county in Idaho, United States with commodities Lead, Silver, Zinc, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10078360
MRDS ID W026653
Record type Site
Current site name Dayrock Mine
Alternate or previous names Stratten Mine, Mc Phillips Group, Option Mine, Panhandle Mine

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
-115.90322, 47.51157 (WGS84) 948 3 MI N OF WALLACE; ABOUT 2 MI WNW OF GEM
(click for info)
-115.90322, 47.51157 (WGS84) 938
-115.90322, 47.51157 (WGS84) 954
-115.90322, 47.51157 (WGS84) 977
-115.90322, 47.51157 (WGS84) 919
-115.90322, 47.51157 (WGS84) 1155

Site location context

Political divisions (FIPS codes)

Shoshone(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Osburn(quadrangle 1:24,000 scale)

Thompson Falls(quadrangle 1:100,000 scale)

Wallace(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)

Geographic areas

Country State County
United States Idaho Shoshone

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 048N 004E 10,11,13,14 Idaho

Comments on the location information

  • BORDERED BY SILVER STAR INC. ON THE S AND W

Commodities

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

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Chalcopyrite Ore
Tetrahedrite Ore
Quartz Gangue
Siderite Gangue
Ankerite Gangue
Calcite Gangue
Pyrite Gangue
Sericite Gangue

Analytical data

Result 2 ORE SHOOTS TOTALING 350 FT LONG AVERAGE 6 OZ/TON AG AND 6.8% PB ACROSS 8 FT WIDTH.

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 St. Regis Formation
    Rock description St. Regis Formation
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Revett Formation
    Rock description Revett Formation
    Stratigraphic age (youngest) Neoproterozoic

Economic information

Geologic structures

Type of structure Local
Structure description Most orebodies found between the Dobson Pass and Murray Faults

Ore body information

  • Name Dayrock Vein
    General form PINCH AND SWELL
    Strike N 70 DEG W
    Dip 62 DEG NE
    Thickness 152M
    Length 580M
    Width 0.91M
  • Name Ohio Vein
    General form PINCH AND SWELL
    Strike SW
    Dip SW
    Thickness 213
    Length 610
    Width 0.9
  • Name Dorn Vein
    General form PINCH AND SWELL
    Strike SW
    Dip SW
    Thickness 79
    Length 198

Controls for ore emplacement

  • Shearing; Fractures

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant Yes
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Year of first production 1924
Year of last production 1974
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation
Production years 1924-1931, 1935-1962, 1965-1974

Mining district

District name Placer Center

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Strattons Mines Inc.
    Interest 100
    Home office Wallace, Idaho
    First year 1923
    Last year 1928
  • Type Owner-Operator
    Owner Dayrock Mining Co.
    Interest 100
    Home office Wallace, Idaho
    First year 1928
    Last year 1947
  • Type Owner-Operator
    Owner Day Mines, Inc.
    Interest 100
    Home office Wallace, Idaho
    First year 1947
    Last year 1981
  • Type Owner-Operator
    Owner Hecla Mining Co.
    Interest 100
    Home office Coeur d'Alene, Idaho
    First year 1981

Production statistics

  • Year 2005
    Period 1924-1974
    Material Ore Treated
    Ore mined 1197510mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major in concentrates Lead Lead 78419mt 7wt-pct

Comments on the production information

  • Production data compiled from Day Mines, Inc. annual reports and other sources.

Workings at the site

  • Type of workings Underground
    Name of workings Total Workings
    Length 32994M
    Overall depth 625M

Comments on the workings information

  • LENGTH IS A 1961 FIGURE

Comments on development

  • 44 PATENTED CLAIMS, 22 UNPATENTED CLAIMS, 3 PATENTED MILLSITES
  • The Dayrock vein orebody, the first economic orebody found in mine, was apparently discovered in 1924.

Reference information

General comments

Subject category Comment text
Deposit DAYROCK VEIN STRIKES W TO N 70 DEG W, DIPS 65 DEG S TO VERTICAL; OHIO VEIN STRIKES N 55 DEG W, IS 2000 FT LONG; DORA VEIN STRIKES N 65 DEG W, IS 650 FT LONG; LATTER TWO DIP S. DEPTHS GIVEN ABOVE EXPRESSED IN ELEVATION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1974 Miller, Pat J. U.S. Geological Survey
Reporter 27-FEB-1984 Kauffman, John D. U.S. Bureau of Mines
Updater 11-MAR-2005 Long, Keith R. U.S. Geological Survey

Beyond USGS

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

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