Monument Mine

The Monument Mine is a gold mine located in Lemhi county, Idaho at an elevation of 5,801 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

Name: Monument Mine  

State:  Idaho

County:  Lemhi

Elevation: 5,801 Feet (1,768 Meters)

Commodity: Gold

Lat, Long: 44.8628, -114.41220

Map: View on Google Maps

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.


Satelite image of the Monument Mine

Monument Mine MRDS details

Site Name

Primary: Monument Mine
Secondary: Singiser
Secondary: Singeiser
Secondary: Singheiser
Secondary: Singiser-Monument Mine
Secondary: Monument Cove


Commodity

Primary: Gold
Tertiary: Copper
Tertiary: Silver
Tertiary: Tellurium
Tertiary: Selenium


Location

State: Idaho
County: Lemhi
District: Gravel Range 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: Salmon National Forest


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Quantex Corp.

Owner Name: Oregon Idaho Co.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Year First Production: 1872
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Salmon River Mountains


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene


Analytical Data

Analytical Data: VEIN AVG. VALUE $14 AU, AG/TON (1902), PAY STREAK RANGE $60 - 100 AU, AG/TON, 50 % AU, 50 % AG (1902)


Materials

Gangue: Quartz


Comments

Comment (Location): Jct. Arrastre Cr And Silver Cr

Comment (Development): Econ.Com: Production Operated By Arrastre; Halted By Inefficient Method Of Treatment

Comment (Workings): 3 Levels

Comment (Geology): Original ore control entry: Fissure, Breccia Zone


References

Reference (Deposit): Ross, C. P., 1927 , Ore Deposits In The Tertiary Lava In The Salmon River Mountains, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 25 , 20 P.

Reference (Production): Umpleby, J. B., 1913, USGS Bulletin 528, 182 P.

Reference (Deposit): Umpleby, J. B., 1913, Geology And Ore Deposits Of Lemhi County, Idaho: USGS Bulletin 528, 182 P.

Reference (Deposit): Carr, H. S., 1909, Vein Structure In The Monument Mine: Mining And Scientific Press, V. 98, No. 16, P. 557 - 558.


Idaho Gold

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"Where to Find Gold in Idaho" 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 Idaho. Read more: Where to Find Gold in Idaho.