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Monarch Mine

Past Producer in Elmore county in Idaho, United States with commodities Gold, Silver, Tungsten
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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. 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 10089044
MRDS ID W007882
MAS/MILS ID 0160390003
Record type Site
Current site name Monarch Mine

Geographic coordinates

Geographic coordinates: -115.11563, 43.77989 (WGS84)
Elevation 2134
Relative position 2 1/2 MI S OF ATLANTLA

Site location context

Political divisions (FIPS codes)

Elmore(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Atlanta East(quadrangle 1:24,000 scale)

Idaho City(quadrangle 1:100,000 scale)

Hailey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North and Middle Forks 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 005N 011E 11 NE Idaho

Comments on the location information

  • At The Head Of Quartz Gulch ; Between Buffalo Discovery And Boise-Rochester

Commodities

Commodity Importance
Gold Primary
Silver Tertiary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Argentite Ore
Miargyrite Ore
Polybasite Ore
Pyrargyrite Ore
Silver Ore
Stephanite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation , Gouge

Analytical data

Result $7.50 - $2000 AU, AG/TON. ANDERSON, 1939, REPORTS $7.25 AU AND AG/TON ASSAY FOR AVERAGE 7.5 FT ORE ZONE
Result 1 30-FT. WIDE CROSSCUT AVERAGED $20.80 AU AND $1.40 AG (BASED ON $20.67 AU). ORE ON 2 LOWER LEVELS AVERAGED $7.50/TON AU AND AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry > Lamprophyre
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Idaho Batholith;Idaho Batholith
    Rock description Idaho Batholith;Idaho Batholith

Nearby scientific data

(1) -115.11563, 43.77989
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Strike N 70 DEG E
    Dip NW
    Thickness 1.83M
    Length 259.08M
    Width 30.48M
    Depth to top 27.43M
    Depth to bottom 182.88M

Controls for ore emplacement

  • Fissures, Shear Zone

Comments on the geologic information

  • Lamprophyre Dike Strikes N 80 Deg E

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1863
Year of first production 1865

Mining district

District name Atlanta District Or Middle Boise District

Land status

Ownership category Private

Comments on the production information

  • About $1,000,000 Total Production (To 1928). Total Produced Exceeds $2,000,000. Production Intermittent - 1865 - 1936

Workings at the site

  • Type of workings Underground
    Length 1280.16M
    Overall depth 182.88M

Comments on the workings information

  • Many Branches Of The Vein At Angles To The Ne Trend Have Approximately E - W Strike

Comments on development

  • 6 Patented Lode Claims, 5 Patented Mill - Sites, 3 Patented Placers, Plus Several Unpatented Claims, 5 - Stamp Mill. Amalgamation-Flotation Concentrator, Areal Tram 1.75 Mi. Long.

Reference information

Bibliographic references

  • Deposit

    Ballard, S. M., 1928, Geology And Ore Deposits Of The Rocky Bar Quadrangle: Idaho Bureau Of Mines & Geol. Pam. 26, P. 31.

  • Deposit

    Anderson, A.L., 1939, Geology And Ore Deposits Of The Atlanta District, Elmore County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 49, 71 P.

  • Deposit

    1928 Geolmap Idaho Bureau Of Mines & Geol. Pam. 26

  • Deposit

    1939 Geolmap Idaho Bureau Of Mines And Geology Pamphlet 49

  • Production

    Ballard, S. M., 1928, Idaho Bureau Of Mines & Geol. Pam. 26, P. 31 ; Anderson, A.L., 1939, Idaho Bureau Of Mines And Geology Pamphlet 49, 71 P.

General comments

Subject category Comment text
Deposit Pettit And Dump Raise Veins Strike N 80 To 85 Deg W, Dip 80 Deg Sw.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1975 Steigner, William D. U.S. Geological Survey
Updater 01-AUG-1976 Everett, Sandra E. U.S. Geological Survey
Updater 01-FEB-1993 Frank, Dave U.S. Geological Survey
Reporter 01-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.

External references

Maps centered on this site