Union-Companion Vein, Cornucopia Mine

Past Producer in Baker county in Oregon, United States with commodities Gold, Silver, Copper, Lead, Zinc, Arsenic, Tellurium
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. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10033330
MRDS ID M015647
Record type Site
Current site name Union-Companion Vein, Cornucopia Mine
Alternate or previous names Elk Creek Gold Mining Co, Robert Emmet, Red Jacket, Forest Queen
Related records 10273685

Geographic coordinates

Geographic coordinates: -117.21435, 45.01236 (WGS84)
Elevation 1951
Relative position 12 MILES NORTH OF HALFWAY

Site location context

Political divisions (FIPS codes)

Baker(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cornucopia(quadrangle 1:24,000 scale)

Enterprise(quadrangle 1:100,000 scale)

Grangeville(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)

Federal lands

Wallowa-Whitman 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 Oregon Baker

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 006S 045E 28 Oregon

Comments on the location information

  • THE VEIN CROPS OUT AT ABOUT 6400 FT. ELEV., ABOUT ONE MILE NORTHWEST OF AND 1600 FT. ABOVE CORNUCOPIA TOWNSITE

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Tertiary
Arsenic Critical Tertiary
Tellurium Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Petzite Ore
Pyrite Ore
Sphalerite Ore
Sylvanite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Early Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Cornucopia Stock
    Rock description Cornucopia Stock
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -117.21435, 45.01236

Economic information

Ore body information

  • Strike N20E
    Dip 45W
    Length 2072.64M
    Width 3.05M
    Depth to top 0M

Controls for ore emplacement

  • Fault Or Shear Zone

Comments on the geologic information

  • GRANODIORITE STOCK AND APLITE DIKES. VEIN IS MAINLY QUARTZ WITH LOCAL INCLUSIONS OF ALTERED HOST ROCKS AND GOUGE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Cornucopia

Land status

Ownership category Private
Area name Wallowa-Whitman National Forest

Ownership information

  • Type Owner
    Owner Forest Industries Insurance Management Co.

Comments on the workings information

  • THE VEIN HAS BEEN DEVELOPED AND MINED TO A DIP DEPTH OF 2400 FEET BELOW THE OUTCROP

Reference information

Bibliographic references

  • Deposit

    BROOKS, H.C, AND RAMP, L., 1968, GOLD AND SILVER IN OREGON: ODGMI BULL. 61, P. 89-90

  • Deposit

    GODSPEED, G.E., 1939, GEOLOGY OF THE GOLD QUARTZ VEINS OF CORNUCOPIA: AMERICAN INST. MINING AND METALLURGICAL ENGINEERS TECH. PUB. 1035.

  • Deposit

    SWARTLEY, A.M., 1914, ORE DEPOSITS IN NORTHEASTERN OREGON: OREGON BUREAU OF MINES AND GEOLOGY: MINERAL RESOURCES OF OREGON, V. 1, NO.8, P. 36-49.

  • Deposit

    WIESS, P.L., AND OTHERS, 1976, MINERAL RESOURCES OF THE EAGLE CAP WILDERNESS AND ADJACENT AREAS, OREGON: USGS BULL. 1385-E, P. 35-45.

General comments

Subject category Comment text
Deposit THE UNION-COMPANION IS ONE OF SEVERAL VEINS WORKED BY THE CORNUCOPIA MINE. OTHERS INCLUDE THE LAST CHANCE, WHITMAN, WALLINGFORD, AND VALLEY VIEW. PRODUCTION WAS MOSTLY FROM THE UNION-COMPANION AND LAST CHANCE VEINS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1980 Brooks, Howard C. Oregon Department of Geology and Mineral Industries
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries

Beyond USGS

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