Empire Mine

Past Producer in Elmore county in Idaho, United States with commodities Gold, Silver

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
(click for info)

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

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

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery method Ore-Mineral In Place

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

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W007840
Idaho Geological Survey Idaho Mines and Prospects IMP HA_108 http://www.idahogeology.org/
U.S. Bureau of Mines Minerals Availability System MAS 0160390022 data consolidated into this record

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