Goff

The Goff is a copper, silver, and gold mine located in Snohomish county, Washington at an elevation of 5,600 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: Goff

Commodity

Primary: Copper
Primary: Silver
Primary: Gold

Location

State: Washington
County: Snohomish

Land Status

Land ownership: National Wilderness
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 Glacier Peak Wilderness In Mount Baker National Forest

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1940
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: Porphyry Cu

Orebody

Form: VEIN

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Limonitization

Rocks

Not available

Analytical Data

Analytical Data: NONE, 7.3% CU. USBM ASSAY: MANY SAMPLES ASSAYED. MAXIMUM VALUES ARE 2.5 OZ/TON AG, 0.01 OZ/TON AU, 0.5% CU
Analytical Data: COMPANY ASSAY: 2 SAMPLES FROM NARROW VEINS ASSAYED 0.01, 0.1 OZ/TON AU
Analytical Data: 1.58, 13.85 OZ/TON AG

Materials

Ore: Pyrite

Comments

Comment (Deposit): SULFIDE-BEARING SHEAR ZONES. ALTERED AREA CONVERS SEVERAL SQUARE MILES. CHURCH AND OTHERS (1984) INDICATE AREA LACKS MANY FEATURES OF TYPICAL HOT SPRINGS DEPOSITS BUT HAS SOME FEATURES SUGGESTING A PORPHYRY SYSTEM

Comment (Location): ALONG SOUTH BOUNDARY OF WILDERNESS

Comment (Workings): 4 ADITS, TRENCH, 4 PROSPECT PITS

References

Reference (Deposit): GRANT, A.R., 1982, SUMMARY OF ECONOMIC GEOLOGY DATA FOR THE GLACEIR PEAK WILDERNESS, CHELAN, SNOHOMISH, AND SKAGIT COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-408, P. 35.

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): CHURCH, S.E., FORD, A.B., FLANIGAN, V.J., AND STOTELMEYER, R.B., 1984, MINERAL RESOURCE POTENTIAL OF THE GLACIER PEAK WILDERNESS AND ADJACENT AREAS, CHELAN, SKAGIT, AND SNOHOMISH COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-1652-A, SCALE 1:100,000.

Reference (Deposit): STOTELMEYER, R.B., JOHNSON, F.L., MCHUGH, E.L., FEDERSPIEL, F.E., DENTON, D.K., JR., AND STEBBINS, S.A., 1982, MINERAL INVESTIGATION OF THE GLACIER PEAK WILDERNESS AND ADACENT AREAS, CHELAN, SKAGIT, AND SNOHOMISH COUNTIES, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT 89-82, P. 23.

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.