El Capitan

Producer in Lane county in Oregon, United States with commodities Gold, Silver, Antimony, Copper, Lead, Zinc
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. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10109489
MRDS ID M025153
Record type Site
Current site name El Capitan
Alternate or previous names President, Churchill
Related records 10250196

Geographic coordinates

Geographic coordinates: -122.64948, 43.55982 (WGS84)

Site location context

Political divisions (FIPS codes)

Lane(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fairview Peak(quadrangle 1:24,000 scale)

Oakridge(quadrangle 1:100,000 scale)

Roseburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Umpqua(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Umpqua 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 Lane

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 023S 001E 23 Oregon

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Antimony Critical Tertiary
Copper Tertiary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Stibnite Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Little Butte Volcanics;Little Butte Volcanics
    Rock description Little Butte Volcanics;Little Butte Volcanics

Nearby scientific data

(1) -122.64948, 43.55982

Economic information

Ore body information

  • Strike N 60-70 W
    Dip 80-90 S
    Length 304.8M
    Width 0.76M

Comments on the geologic information

  • THE VEIN IS ZONED AND CONSISTS OF TWO PORTIONS; AN OXIDIZED GOLD-BEARING INNER ZONE WHICH CONTAINS PYRITE, CHALCOPYRITE, GALENA, AND SPHALERITE IN A MATRIX OF VUGGY QUARTZ BRECCIA AND AN OUTER ZONE CONSISTING OF BLADES AND CLUSTERS OF STIBNITE CRYSTALS IN A WHITE SILICIFIED BRECCIA.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1898
Discoverer A.P. Churchill

Mining district

District name Bohemia

Land status

Ownership category National Forest
Area name Umpqua National Area

Comments on the workings information

  • 380 FT IN TWO ADITS

Reference information

Bibliographic references

  • Deposit

    BROOKS, H.C. AND RAMP, L., 1968, GOLD AND SILVER IN OREGON; ODGMI BULL. 61, P. 315

  • Deposit

    OREGON METAL MINES HANDBOOK, 1951, ODGMI BULL. 14-D, P. 61

  • Deposit

    CALLAGHAN, E. AND BUDDINGTON, A.F., 1938, METALLIFEROUS MINERAL DEPOSITS OF THE CASCADE RANGE IN OREGON; USGS BULL. 893, P. 67

  • Deposit

    LUTTON, R.J., 1962, GEOLOGY OF THE BOHEMIA MINING DISTRICT, LANE COUNTY, OREGON; UNIV. ARIZONA PHD DISSERTATION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1981 Ferns, Mark L. (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.