Chehalis River Prospect

The Chehalis River Prospect is a manganese mine located in Lewis county, Washington.

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: Chehalis River Prospect

Commodity

Primary: Manganese

Location

State: Washington
County: Lewis

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Weyerhaeuser Timber Co.
Home Office: Tacoma, Wash.
Years: 1956 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Oregon Coast Range

Mineral Deposit Model

Model Name: Volcanogenic Mn

Orebody

Form: UNKNOWN

Structure

Not available

Alterations

Not available

Rocks

Name: Basalt
Role: Host
Age Type: Host Rock Unit
Age Young: Eocene

Name: Basalt
Role: Host
Age Type: Host Rock
Age Young: Eocene

Analytical Data

Analytical Data: 34% MN, 12% SIO2, 0.12%

Materials

Not available

Comments

Comment (Location): ON HEADWATERS OF E FORK CHEHALIS RIVER

Comment (Deposit): SAID TO BE A DEPOSIT OF MANGANESE WHICH COULD BE CHEAPLY MINED. ; INFO.SRC : 1 PUB LIT

References

Reference (Deposit): WALSH, T.J., 1987, GEOLOGIC MAP OF THE ASTORIA AND ILWACO QUADRANGLES, WASHINGTON AND OREGON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 87-2, SCALE 1:100,000.

Reference (Analytical Data): HUNTTING, 1956

Reference (Deposit): HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS, PART II, METALLIC MINERALS, V. 1, P. 260.

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.