Monument Peak

The Monument Peak is a copper mine located in Okanogan county, Washington at an elevation of 4,501 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: Monument Peak
Secondary: Monument
Secondary: Lost River Claim

Commodity

Primary: Copper
Secondary: Molybdenum
Tertiary: Gold
Tertiary: Silver

Location

State: Washington
County: Okanogan

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 Pasayten Wilderness In Okanogan National Forest

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1951
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: DISSEMINATED

Form: DISSEMINATED

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Hornfels Has Been Altered

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Eocene

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Eocene

Analytical Data

Analytical Data: CHIP SAMPLE OF VEIN MATERIAL CONTAINS 0.002 OZ/TON AU, 0.09 OZ/TON AG

Materials

Ore: Molybdenite
Gangue: Quartz
Gangue: Calcite
Gangue: Fluorite

Comments

Comment (Commodity): THERE IS NOT ENOUGH FLUORITE IN THE DEPOSIT TO BE RECOVERED ECONOMICALLY

Comment (Development): VEIN DEPOSIT FOUND IN 1951. PORPHYRY COPPER DEPOSIT IDENTIFIED LATER

Comment (Deposit): WEAK GEOCHEMICAL ANOMALIES. SHEAR ZONE NEAR VEIN DEPOSIT STRIKES N30E, DIPS 55NW. VEINS CONTAINED NO SULFIDES, BUT RUBBLE IN CREEK CONTAINS MOLYBDENITE

Comment (Workings): SHALLOW DISCOVERY PIT

Comment (Geology): HORNFELS IS ADJACENT TO MONUMENT PEAK STOCK

Comment (Location): UNSURVEYED. LOCATION OF PORPHYRY COPPER MINERALIZATION IS VAGUE AND MAY BE ELSEWHERE WITHIN THE MONUMENT PEAK STOCK

References

Reference (Deposit): STOFFEL, K.L., AND MCGRODER, M.F., 1990, GEOLOGIC MAP OF THE ROBINSON MTN. 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-5, SCALE 1:100,000.

Reference (Deposit): HOLLISTER, V.F., 1979, PORPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 34.

Reference (Deposit): STAATZ, M.H., WEIS, P.L., TABOR, R.W., ROBERTSON, J.F., VAN NOY, R.M., PATTEE, E.C., AND HOLT, D.C., 1971, MINERAL RESOURCES OF THE PASAYTEN WILDERNESS AREA, WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 1325, P. 115-116.

Reference (Deposit): GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 32.

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.