Cooperative Mine Upper Workings

The Cooperative Mine Upper Workings is a silver, gold, and copper mine located in Snohomish county, Washington at an elevation of 4,199 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: Cooperative Mine Upper Workings
Secondary: Howard

Commodity

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

Location

State: Washington
County: Snohomish
District: Index 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-Snoqualmie National Forest

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Cooperative Mining Syndicate
Years: 1912 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1897
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

Not available

Analytical Data

Analytical Data: SAMPLES FROM SHAFT RAN $1-6/TON AU

Materials

Ore: Bornite
Ore: Pyrite
Ore: Chalcopyrite

Comments

Comment (Geology): GEOLOGIC MAP INDICATES AREA IS UNDERLAIN BY GROTTO BATHOLITH. IT IS NOT CLEAR WHETHER THE QUARTZITE REFERRED TO IN REFERENCES FOR MINE IS FOR SANDSTONE OF SWAUK FORMATION, WHICH IS SHOWN NEARBY, OR WHETHER IT IS A ROOF PENDANT OF EASTERN MELANGE BELT ROCKS IN THE BATHOLITH

Comment (Deposit): MINERALIZED SHEAR ZONE

Comment (Location): ON HOWARD CREEK.

Comment (Workings): SEVERAL ADITS, SHAFT, SEVERAL OPEN CUTS

References

Reference (Deposit): TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.

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. 81.

Reference (Deposit): WEAVER, C.E., 1912, GEOLOGY AND ORE DEPOSITS OF THE INDEX MINING DISTRICT, WASHINGTON: WASHINGTON GEOLOGICAL SURVEY BULLETIN 7, P. 79-80.

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.