Placer Basin Mine

The Placer Basin Mine is a gold mine located in Adams county, Idaho at an elevation of 6,401 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: Placer Basin Mine  

State:  Idaho

County:  Adams

Elevation: 6,401 Feet (1,951 Meters)

Primary Mineral: Gold

Lat, Long: 45.1158, -116.61560

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 Placer Basin Mine

Placer Basin Mine MRDS details

Site Name

Primary: Placer Basin Mine
Secondary: Placer Mine


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


State: Idaho
County: Adams
District: Seven Devils 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: Payette National Forest


Not available


Type: Underground


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Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Discovery Method: Unknown
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Seven Devils Mountains

Mineral Deposit Model

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Name: Andesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic

Analytical Data

Not available


Gangue: Pyrite
Gangue: Quartz


Comment (Development): Mine Closed In 1941. Peak Period Of Production Was 1935 - 37. 25 - Ton Cyanidation Plant.

Comment (Location): On Bear - Black Lake Road. Between Bear P. O. And Smith Mtn.

Comment (Production): Value Of Ore In 1937 Was $125,000; In 1936, $45,000.

Comment (Workings): A 600 - Foot Inclined Shaft And 6 Levels Composed The Mine, Which Is Now Caved.


Reference (Deposit): Cook, E. F., 1954, Mining Geology Of The Seven Devils Region: Idaho Bureau Of Mines And Geology Pamphlet 97, 22 P.

Reference (Deposit): Livingston, D. C. And Laney, F. B., 1920, Copper Deposits Of The Seven Devils And Adjacent Districts: Idaho Bureau Of Mines And Geology Bulletin 1, P. 35.

Reference (Deposit): 1920 Compile Idaho Bureau Of Mines And Geol., Bulletin 1.

Reference (Deposit): 1954 Geolmap Idaho Bureau Of Mines And Geol., Pamphlet 97.

Reference (Production): Cook, E. F., 1954, Idaho Bureau Of Mines And Geology, Pamphlet 97, 22 P.

Idaho Gold

Where to Find Gold in Idaho

"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 at Where to Find Gold in Idaho.