Forty Five Mine

The Forty Five Mine is a silver, lead, and gold mine located in Snohomish county, Washington at an elevation of 3,501 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: Forty Five Mine
Secondary: Magus
Secondary: 45 Mine
Secondary: Deu Pree Lode

Commodity

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

Location

State: Washington
County: Snohomish
District: Sultan District

Land Status

Land ownership: National Forest
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.
Administrative Organization: In Mount Baker National Forest

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Mine Evaluation, Inc.
Years: 1990 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1891
Years of Production:
Organization:
Significant: N
Deposit Size: M

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: VEINS

Structure

Type: R
Description: Melange Belt

Alterations

Alteration Type: L
Alteration Text: Granodiorite Is Sheared And Altered

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Paleocene

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Paleocene

Analytical Data

Analytical Data: HIGH-GRADE ORE CONTAINED AS MUCH AS 171 OZ/TON AG. AVERAGE WAS ABOUT 93 OZ/TON AG, 0.74 OZ/TON AU

Materials

Ore: Sphalerite
Ore: Scheelite
Ore: Marcasite
Ore: Pyrrhotite
Ore: Chalcopyrite
Ore: Tetrahedrite
Ore: Silver
Ore: Pyrite
Ore: Galena
Ore: Pyrargyrite
Gangue: Quartz
Gangue: Calcite

Comments

Comment (Location): PROPERTY CONTAINS NUMEROUS CLAIMS

Comment (Development): EXPLORATION OF UNKNOWN TYPE WAS UNDERWAY IN 1990

Comment (Deposit): LARGEST ORE BODY IS 15 X 300 FT. VEINS ARE WITHIN A SHEAR ZONE

Comment (Workings): >4000 FT OF UNDERGROUND WORKINGS

Comment (Geology): METAMORPHIC ROCKS OF AREA INCLUDE GREENSTONE, GRAYWACKE, ARGILLITE, CHERT, MARBLE. PROTOLITHS OF MELANGE ROCKS RANGE FROM LATE MISSISSIPPIAN TO JURASSIC

References

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. 319.

Reference (Deposit): CARITHERS, WARD, AND GUARD, A.K., 1945, GEOLOGY AND ORE DEPOSITS OF THE SULTAN BASIN, SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 36, P. 39-46.

Reference (Deposit): DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 346.

Reference (Deposit): BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY REPORT OF INVESTIGATIONS 6, P. 47.

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.