Mackinaw Metals Mine

The Mackinaw Metals Mine is a copper mine located in Snohomish county, Washington at an elevation of 2,720 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: Mackinaw Metals Mine
Secondary: Mackinaw Group
Secondary: Osceolo Claim
Secondary: Lenox Claim
Secondary: Lorna Claim
Secondary: Banner Claim
Secondary: Banner Extension Claim
Secondary: Albion Claim
Secondary: Blue Bell Claim
Secondary: Mackinaw Claims 1 To 7
Secondary: Mackinau Metals
Secondary: Taft Copper Nickel Mine
Secondary: Weden Creek
Secondary: Donald Claim
Secondary: St Lawrence Claim

Commodity

Primary: Copper
Tertiary: Uranium
Tertiary: Silver
Tertiary: Nickel
Tertiary: Gold
Tertiary: Cobalt

Location

State: Washington
County: Snohomish
District: Monte Cristo 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.

Holdings

Type: Private Lease

Workings

Not available

Ownership

Owner Name: Mackinaw Mining And Milling Co.
Years: 1910 -

Owner Name: E. C. Baker, Garrett Cleary, M. T. Commins
Years: 1900 -

Owner Name: R. D. Taft (Utility Mining Co.)
Home Office: Washington
Info Year: 1943
Years: 1941 - 1947

Owner Name: Mackinaw Metals Co.
Home Office: Washington
Info Year: 1943
Years: 1945 - 1954

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Chloanthite
Unknown: Pentlandite
Unknown: Pyrite
Unknown: Pyrrhotite
Unknown: Quartz
Unknown: Calcite
Unknown: Chalcopyrite
Unknown: Chrysocolla
Unknown: Erythrite
Unknown: Garnierite
Unknown: Malachite

Comments

Comment (Deposit): THE DEPOSITS WERE DEVELOPED FROM 1900 TO 1910 IN A SEARCH FOR GOLD ORE. ONLY A FEW TONS OF ORE WAS EVER SHIPPED TO THE SHELTER. THE ORE DEPOSITS ARE IN A PERIDOTITE DIKE OR INTRUSIVE THAT IS INTERSPERSED WITH SMALL BLEBS AND SEAMS OF SERPENTINE, ACTINOLITE AND TREMOLITE. AT SEVERAL PLACES IN THE MASS SMALL DEPOSITS OF NICKEL AND COPPER SULFIDES OCCUR. THE PERIDOTITE IN WHICH THE PRINCIPAL ORE DEPOSITS OCCUR IS A DENSE, DARK COLORED, FINE GRAINED ROCK THAT HAS BEEN PARTLY SERPENTINIZED. THE PRINCIPAL ORE DEPOSITS OCCUR ALONG A SHEAR ZONE THAT STRIKES N32 DEGREES W AND DIPS NEARLY VERTICAL. COBALT ASSAYS ABOUT 0.05 PERCENT

Comment (Workings): SENSITIVITY TO DEVELOPMENT DEPENDS ON THE LOCATION OF THE MILL SITE.

Comment (Geology): MOST OF THE NICKEL IN THE ORE IS COMBINED WITH ARSENIC IN THE FORM OF UNIDENTIFIED ARSENIDES.

Comment (Names): THE MACKINAW GROUP CONSISTS OF 16 CLAIMS

Comment (Reserve-Resource): GRADE ESTIMATED FROM METALLURGICAL SAMPLE.

References

Reference (Deposit): MINE MAP REPOSITORY (MICROFILM).

Reference (Deposit): USBM, WFOC, MINERAL PROPERTY FILE 0530610008.

Reference (Deposit): WA STATE BULL 37, PART 2, VOL 1, METALLIC MINERALS, P. 87.

Reference (Reserve-Resource): WAR MINERALS REPORT 156, 1944.

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.