Oro Fino Mine

Past Producer in Owyhee 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  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 10069907
MRDS ID W007682
Record type Site
Current site name Oro Fino Mine
Alternate or previous names Sinker Tunnel
Related records 10241981

Geographic coordinates

Geographic coordinates: -116.69847, 43.01071 (WGS84)
Elevation 2240
Relative position 1.33 MILES SOUTHEAST OF SILVER CITY, ON WAR EAGLE MOUNTAIN.

Site location context

Political divisions (FIPS codes)

Owyhee(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver City(quadrangle 1:24,000 scale)

Murphy(quadrangle 1:100,000 scale)

Boise(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Snake-Succor(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Idaho Owyhee

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 005S 003W 04 Idaho

Comments on the location information

  • ON WAR EAGLE MOUNTAIN AT HEAD OF BLUE CR

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • BELOW 300 - FT. DEPTH, ORE AVERAGED $20 TO $30/TON.

Materials information

Materials Type of material
Argentite Ore

Analytical data

Result AT DEPTH OF 220 FT., AU : AG RATIO WAS 1 : 7.3 BY WEIGHT

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Silver City Granite-Granodiorite
    Rock description Silver City Granite-Granodiorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -116.69847, 43.01071

Economic information

Geologic structures

Type of structure Local
Structure description Cemented Breccia

Ore body information

  • General form IRREGULAR
    Strike N 4 DEG W
    Dip 80 DEG E
    Thickness 4.27M
    Length 609.6M

Controls for ore emplacement

  • Vein Intersections

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1863
Year of first production 1864

Mining district

District name French District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Sinker Tunnel Mining Co.
  • Type Owner
    Owner War Eagle Consolidated Mining Co.

Comments on the production information

  • AU, AG

Workings at the site

  • Type of workings Underground
    Length 2834.64M
    Overall depth 152.4M

Comments on development

  • 8 PATENTED CLAIMS. PHYSICAL PROPERTY IN 1926 INCLUDED OFFICE BUILDING, BOARDING HOUSE, BOILER HOUSE, BLACKSMITH SHOP, AUXILIARY TRANSFORMER HOUSE, POWDER MAGAZINE, WAREHOUSE, POWER PLANT. ; ECON.COM: IDEAL MINING AND MILLING SITE: AMPLE DUMP GROUND, AMPLE WATER SUPPLY WITHIN TWO MILES, MINIMUM SNOW HAZARD.

Reference information

Bibliographic references

  • Deposit

    ASHER, R. R., 1968, GEOLOGY AND MINERAL RESOURCES OF A PORTION OF THE SILVER CITY REGION, OWYHEE COUNTY, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 138, 106 P.

  • Deposit

    PIPER, A. M., AND LANEY, F. B., 1926, GEOLOGY AND METALLIFEROUS RESOURCES OF THE REGION ABOUT SILVER CITY, IDAHO: IDAHO BUREAU OF MINES AND GEOL. BULL. 11, 165 P.

  • Deposit

    LINDGREN, W., 1898, THE GOLD AND SILVER VEINS OF SILVER CITY, DELAMAR, AND OTHER MINING DISTRICTS OF IDAHO: 20TH ANN. REPORT, U.S.G.S., P. 75 -205 (PART 3).

  • Deposit

    1898 COMPILE W. LINDGREN 20TH ANN. REPT.

  • Deposit

    1926 GEOLMAP IDAHO BUREAU OF MINES & GEOL. BULL. 11

  • Deposit

    1968 GEOLMAP IDAHO BUREAU OF MINES & GEOL. PAMPHLET 138

  • Production

    LINDGREN, W., 1898 , USGS 20TH ANN. REPT. PT. 3 , P. 75 . RAYMOND, R. W., 1870 - 1873 , 41ST - 43RD CONGRESSES, HOUSE OF REP. EX. DOCS.

General comments

Subject category Comment text
Deposit ORE BODIES MAY RAKE TO THE S. DIP VARIES 75 - 90 DEG E

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1975 Miller, Pat J. U.S. Geological Survey

Beyond USGS

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

External references