Greenwalt Placer

The Greenwalt Placer is a gold mine located in Elmore county, Idaho at an elevation of 5,200 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: Greenwalt Placer  

State:  Idaho

County:  Elmore

Elevation: 5,200 Feet (1,585 Meters)

Commodity: Gold

Lat, Long: 43.8403, -115.25610

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 Greenwalt Placer

Greenwalt Placer MRDS details

Site Name

Primary: Greenwalt Placer
Secondary: Black Warrior Placers


Primary: Gold


State: Idaho
County: Elmore
District: Black Warrior 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: Boise National Forest


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Type: Surface


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Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Placer
Year First Production: 1925
Discovery Method: Ore-Mineral Not In Place
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Sawtooth Mountains

Mineral Deposit Model

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Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Holocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Holocene

Analytical Data

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Comment (Development): 6 Claims

Comment (Location): At The Junction Of West Warrior Cr. And Black Warrior Cr.


Reference (Deposit): IBMG Mines & Prospects Of Hailey Quad, 1981, Hustedde.

Reference (Deposit): Ballard, S. M., 1928, Geology And Ore Deposits Of Rocky Bar Quadrangle: Idaho Bureau Of Mines & Geol. Pam. 26, P. 4

Reference (Deposit): 1928 Geolmap Idaho Bureau Of Mines & Geol. Pam. 2

Reference (Production): Ballard, S. M., 1928, Idaho Bureau Of Mines & Geol. Pam. 26, P. 40

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: Where to Find Gold in Idaho.