Golconda Mine

The Golconda Mine is a gold mine located in Skamania county, Washington at an elevation of 3,081 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Golconda Mine
Secondary: Margaret Property

Commodity

Primary: Gold
Secondary: Copper
Tertiary: Lead
Tertiary: Zinc

Location

State: Washington
County: Skamania
District: St. Helens District - Ryan Lake Area

Land Status

Land ownership: National Monument
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Type: Located Claim

Workings

Type: Underground

Ownership

Owner Name: Duval Corp
Years: 1977 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Deposit Type: porphyry Cu
Operation Type: Underground
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Form: VEIN

Structure

Not available

Alterations

Not available

Rocks

Name: Quartz Monzonite
Role: Host
Age Type: Host Rock Unit
Age Young: Miocene

Name: Quartz Monzonite
Role: Host
Age Type: Host Rock
Age Young: Miocene

Analytical Data

Analytical Data: REPORTEDLY $400/TON AU

Materials

Ore: Sphalerite
Ore: Galena
Ore: Chalcopyrite
Ore: Pyrite
Ore: Gold
Gangue: Quartz

Comments

Comment (Development): NO WORK HAS BEEN DONE SINCE 1930'S.

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

Comment (Production): A MARKETABLE CONCENTRATE WAS NOT OBTAINED, AND OPERATIONS CEASED.

Comment (Deposit): QUARTZ VEINLETS ALONG A FRACTURE ZONE IN QUARTZ MONZONITE.

Comment (Workings): Adit 775 ft long with 100 ft winze.

Comment (Deposit): SEE ALSO MRDS RECORD M700154

References

Reference (Production): MOEN, 1977

Reference (Deposit): MOEN, W.S., 1977, ST HELENS AND WASHOUGAL MINING DISTRICTS OF THE SOUTHERN CASCADES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 60, P. 17 - 26. (71 p.)

Reference (Deposit): HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 155.

Washington Gold

"Where to Find Gold in Washington" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Washington.