Empire Mine

Past Producer in Elmore county in Idaho, United States with commodities Gold, Silver
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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10070008
MRDS ID W007840
MAS/MILS ID 0160390022
Record type Site
Current site name Empire Mine

Geographic coordinates

Geographic coordinates: -115.28484, 43.69848 (WGS84)
Elevation 1676
Relative position 1 MI. NE OF ROCKY BAR

Site location context

Political divisions (FIPS codes)

Elmore(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rocky Bar(quadrangle 1:24,000 scale)

Idaho City(quadrangle 1:100,000 scale)

Hailey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Boise(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Boise National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Idaho Elmore

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 004N 010E 08 SENE Idaho

Comments on the location information

  • On The West Side Of Blake'S Gulch, Directly Across From The Mountain Goat.

Commodities

Commodity Importance
Gold Primary
Silver Tertiary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result SELECTED ASSAYS SHOW 3 - 4 OZ AU PER TON. ORE FROM HIGH GRADE STREAKS ASSAYED $120/TON IN AU AND AG

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Idaho Batholith-Quartz Monzonite
    Rock description Idaho Batholith-Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -115.28484, 43.69848

Economic information

Ore body information

  • General form STRINGERS, LENSES, BUNCHES
    Strike N 20 DEG W
    Dip STEEP
    Width 1.83M

Controls for ore emplacement

  • Fractures, Faults

Comments on the geologic information

  • 2 Sets Of Fractures, One Trends N 30 Deg W And Dips Sw, The Other Trends E-W And Dips Vertically.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Rocky Bar District

Land status

Ownership category National Forest
Area name Boise National Forest

Workings at the site

  • Type of workings Underground
    Length 192.02M

Comments on the workings information

  • There Was An Undetermined Amount Of Tunneling In Addition To The 630 Ft Reported

Comments on development

  • 2 Claims, 5 Tunnels With Caved Portals, A 1/2 Ton Mill

Reference information

Bibliographic references

  • Deposit

    Anderson, A. L., 1943, Geology Of Gold - Bearing Lodes Of Rocky Bar District, Elmore Co., Idaho: Idaho Bureau Of Mines & Geol. Pam. 65, P. 31

  • Deposit

    Wagner, W.R.T., 1939, The Geology And Ore Deposits Of The Rocky Bar District, Idaho: Moscow, Idaho, Univ. Of Idaho M.S. Thesis, 32 P.

  • Deposit

    1943 Geolmap Idaho Bureau Of Mines & Geol. Pam. 6

  • Production

    Anderson, A. L., 1943, Idaho Bureau Of Mines & Geol. Pam. 65 P. 30

General comments

Subject category Comment text
Deposit A Funnel - Shaped Glory Hole 18 Ft Deep And 20 Ft In Diameter At The Top, Was Mined In The Late 1930'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1975 Steigner, William D. U.S. Geological Survey
Updater 01-SEP-1976 Siefken, Robert R. U.S. Geological Survey
Reporter 13-MAR-1995 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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