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  3. Mineral Resource Data System (MRDS)

Eldorado Group

Occurrence in Harney county in Oregon, United States with commodities Mercury, Copper
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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. Mineral occurrence model information
  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. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10036280
MRDS ID M025039
Record type Site
Current site name Eldorado Group
Related records 10176694

Geographic coordinates

Geographic coordinates: -118.67269, 42.34404 (WGS84)
Elevation 1341

Site location context

Political divisions (FIPS codes)

Harney(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fields(quadrangle 1:24,000 scale)

Alvord Lake(quadrangle 1:100,000 scale)

Adel(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alvord Lake(hydrologic unit)

Oregon Closed Basins(hydrologic accounting unit)

Oregon Closed Basins(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management OR)

Bureau of Land Management OR BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Oregon Harney

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 037S 033E 07 Oregon

Commodities

Commodity Importance
Mercury Primary
Copper Primary

Materials information

Materials Type of material
Cinnabar Ore
Chalcedony Gangue
Kaolinite Gangue

Mineral occurrence model information

Model code 154
USGS model code 25e
Deposit model name Epithermal quartz-alunite Au
Mark3 model number 38

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Steens Mountain Volcanic Series
    Rock description Steens Mountain Volcanic Series
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -118.67269, 42.34404
ListMap

Economic information

Ore body information

  • Thickness 0.2M

Controls for ore emplacement

  • Silicified Reefs

Comments on the geologic information

  • DISSEMINATED CINNABAR OCCURS IN TWO THIN CHALCEDONY VEINS WHICH PARALLEL THE ENCLOSING SILICIFIED REEF.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Steens-Pueblo

Land status

Ownership category BLM Administrative Area

Reference information

Bibliographic references

  • Deposit

    WILLIAMS, H. AND COMPTON, R. R., 1953, QUICKSILVER DEPOSITS OF STEENS MOUNTAIN AND PUEBLO MOUNTAINS, SOUTHEAST OREGON; USGS BULL. 995-B, P. 68

  • Deposit

    BROOKS, H. C., 1963, QUICKSILVER IN OREGON; ODGMI BULL. 55, P. 197

  • Deposit

    BROOKS, H. C., 1971, QUICKSILVER DEPOSITS IN OREGON; ODGMI MISC. PAPER 15, MAP WITH TEXT

  • Deposit

    U.S. BUREAU OF MINES IC 8252, 1965, TABLE 26, P. 330.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1980 Ferns, Mark L. (Brooks, Howard C.) U.S. Geological Survey
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries
Updater 01-MAY-1995 Li, Zhiping (Peters, S.) U.S. Geological Survey

Beyond USGS

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

Maps centered on this site