Golconda Mine

Prospect in Skamania county in Washington, United States with commodities Gold, Copper, Zinc, Lead
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. Economic information about the deposit and operations
  13. Mining district
  14. Mineral rights holdings
  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 10047843
MRDS ID M700170
Record type Site
Current site name Golconda Mine

Geographic coordinates

Geographic coordinates: -122.07091, 46.34731 (WGS84)
Elevation 939
Location accuracy 1000(meters)
Relative position 0.5 MI SOUTH-SOUTHWEST OF RYAN LAKE, Estimated Within Half Section Where Recent Mapping Shows Vein Crossing Creek

Site location context

Political divisions (FIPS codes)

Skamania(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Spirit Lake East(quadrangle 1:24,000 scale)

Mount Saint Helens and Vicinity(quadrangle 1:100,000 scale)

Hoquiam(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cowlitz(hydrologic unit)

Lower Columbia(hydrologic accounting unit)

Lower Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Gifford Pinchot 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 Washington Skamania

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 010N 006E 16 NEAR CENTER OF W2 Washington

Comments on the location information

  • NEAR EDGE OF BLAST ZONE FROM 1980 ERUPTION OF MOUNT ST. HELENS. LOCATION MAP AVAILABLE, MOEN (1977, p. 17, Figure 10)

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue

Analytical data

Result REPORTEDLY $400/TON AU

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Spirit Lake Pluton, Main Phase
    Rock description Spirit Lake Pluton, Main Phase
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -122.07091, 46.34731

Economic information

Ore body information

  • General form VEIN

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name St. Helens District - Ryan Lake Area

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest
Area name In Gifford-Pinchot National Forest
Ownership category National Monument

Ownership information

  • Type Operator
    Owner Duval Corp
    First year 1977

Comments on the production information

  • A MARKETABLE CONCENTRATE WAS NOT OBTAINED, AND OPERATIONS CEASED.

Workings at the site

  • Type of workings Underground
    Length 12.19M

Comments on the workings information

  • Adit 775 ft long with 100 ft winze.

Comments on development

  • NO WORK HAS BEEN DONE SINCE 1930'S.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit QUARTZ VEINLETS ALONG A FRACTURE ZONE IN QUARTZ MONZONITE.
Deposit SEE ALSO MRDS RECORD M700154

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-81 Caress, Mary E. (Evarts, Russ) U.S. Geological Survey
Updater 01-NOV-92 Peterson, Jocelyn A. U.S. Geological Survey
Reporter 13-OCT-92 Ridenour, James U.S. Bureau of Mines
Updater 20-MAY-09 Causey, J. Douglas U.S. Geological Survey

Beyond USGS

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

External references