Eagan Mine

Past Producer in Washington county in Idaho, United States with commodities Silver, Copper, Zinc, Lead, Antimony
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. 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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10070085
MRDS ID W012765
MAS/MILS ID 0160870032
Record type Site
Current site name Eagan Mine
Alternate or previous names Egan

Geographic coordinates

Geographic coordinates: -117.07271, 44.57176 (WGS84)
Elevation 1036
Relative position 20 MILES DOWN STREAM OF HUNTINGTON ORE; 23 MI. NORTH OF WEISER

Site location context

Political divisions (FIPS codes)

Washington(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monroe Butte(quadrangle 1:24,000 scale)

Baker City(quadrangle 1:100,000 scale)

Baker City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Brownlee Reservoir(hydrologic unit)

Middle Snake-Powder(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Idaho Washington

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 014N 006W 09 SWNENW Idaho

Comments on the location information

  • LOCATED 1 MILE ABOVE OLD TOWN OF MINERAL, ON STEEP SLOPE FACING N. FK. OF DENNETT CR.

Commodities

Commodity Importance
Silver Primary
Copper Primary
Zinc Critical Tertiary
Lead Tertiary
Antimony Critical Tertiary

Comments on the commodity information

  • MINE IN OPERATION: 1890'S - 1905, 1919 - 1922

Materials information

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

Alteration

  • (Local) Oxidation

Analytical data

Result ORE OF LOW GRADE CHEMICAL ANALYSIS OF SAMPLE GAVE 16.3 OZ AG/TON, 0.2 % PB, 1.3 % CU, 1.6 % SB, NO AU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Seven Devils Volcanics-Quartz Latite;Diorite
    Rock description Seven Devils Volcanics-Quartz Latite;Diorite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Seven Devils Volcanics
    Rock description Seven Devils Volcanics

Nearby scientific data

(1) -117.07271, 44.57176

Economic information

Geologic structures

Type of structure Regional
Structure description Area Appears To Be On The North Limb Of A Faulted Anticline Of General N.E. Trend

Ore body information

  • General form LENTICULAR
    Strike N. 60 DEG. W.
    Dip 40 DEG NE
    Plunge 40 DEG
    Plunge direction NW
    Width 6.1M

Controls for ore emplacement

  • Fractures, Faults Of Nw Trend.

Comments on the geologic information

  • METALLIC MINERALS ARE FINE-GRAINED AND SHOW A TENDENCY TO FORM BANDED, DISCONTINUOUS CONCENTRIC STRUCTURES, SUGGESTING COLLOFORM. DARK GRAY MEDIUM GRAINED DIORITE. HOST VOLCANICS, HIGHLY ALTERED OF LATITIC MATURE, QTZ-LATITE.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1895

Mining district

District name Mineral District

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Length 457.2M
    Overall depth 60.96M

Comments on the workings information

  • WORKINGS CONFINED TO 4 ADITS AND 2 INTERMEDIATE LEVELS.

Reference information

Bibliographic references

  • Deposit

    ANDERSON, A. L., AND WAGNER, W. R., 1952, RECONNAISSANCE GEOLOGY AND ORE DEPOSITS OF THE MINERAL DISTRICT, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 95, 26 P.

  • Deposit

    SMOLAK, G.M., 1924 , AN INVESTIGATION OF THE METALLURGICAL TREATMENT OF A LOW GRADE SILVER ORE FROM THE MINERAL MINE AT MINERAL, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, M.S. THESIS; 51 P.

  • Deposit

    1952 RECON IDAHO BUREAU OF MINES AND GEOL., PAMPHLET 9

  • Deposit

    IDAHO BUREAU OF MINES & GEOLOGY PAMPHLET 13, P. 27.

General comments

Subject category Comment text
Deposit Discovery Year: 1890'S
Deposit VEIN DIP VARIES 25 - 55 DEG NE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1976 Benjamin, David A.; Miller, Pat U.S. Geological Survey
Reporter 14-MAR-1995 Winters, Dick U.S. Bureau of Mines

Beyond USGS

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