Boulder Creek Placers

The Boulder Creek Placers is a gold and lead mine located in Boundary county, Idaho at an elevation of 2,500 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: Boulder Creek Placers  

State:  Idaho

County:  Boundary

Elevation: 2,500 Feet (762 Meters)

Primary Mineral: Gold, Lead

Lat, Long: 48.6028, -116.08140

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 Boulder Creek Placers

Boulder Creek Placers MRDS details

Site Name

Primary: Boulder Creek Placers
Secondary: Leonia Gold Mining Co.
Secondary: Idamont Property
Secondary: Idamont Lead-Zinc Mines Co.
Secondary: Idaho Gold and Ruby Mining Co.


Primary: Gold
Primary: Lead
Secondary: Silver
Secondary: Zinc


State: Idaho
County: Boundary
District: Moyie - Yaak 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: Kaniksu National Forest


Not available


Type: Underground


Owner Name: Idamont Lead-Zinc Mining Co.


Not available


Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Surface-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: Purcell Range

Mineral Deposit Model

Not available


Name: Idamont Property Pb-Zn orebody

Form: Placer


Type: L
Structure: Vein


Alteration Type: L
Alteration: Sericitization


Name: Quartzite
Role: Host
Description: Sericitic
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Gabbro
Role: Associated
Description: Metagabbro
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

Name: Gabbro
Role: Associated
Description: Metagabbro
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Gravel
Role: Host
Description: Part of the Boulder Creek Placers
Age Type: Host Rock
Age Young: Pleistocene

Name: Gravel
Role: Host
Description: Part of the Boulder Creek Placers
Age Type: Host Rock Unit
Age Young: Pleistocene

Analytical Data

Analytical Data: PB208/PB204 = 35.976
Analytical Data: PB ISOTOPES: PB206/PB204 = 16.296
Analytical Data: PB207/PB204 = 15.398


Ore: Galena
Gangue: Quartz


Comment (Deposit): A General Location For Gold Bearing Gravels Extending From The Stream Mouth. These Deposits Are Known To Be 500 Ft -1000 Ft Wide. Environmentally Deleterious Hydraulicking Is The Method Of Production .

Comment (Commodity): One Vein Yielded Values From $6.72 To $112 Per Ton In Ag, Pb, Zn.

Comment (Development): 44 Unpatented Quartz And Placer Claims.

Comment (Location): Near Mouth Of Boulder Creek


Reference (Deposit): Kirkham & Ellis 1926, Idaho Bureau Of Mines & Geol Bulletin 10

Reference (Deposit): 1926 Geolmap Idaho Bureau Of Mines And Geol. Bulletin No. 10

Reference (Deposit): Bell, Robert N., 14th Ann. Rpt. Of The Mining Ind. Of Id. For The Year 1913. P. 106 - 109

Reference (Deposit): Kiilsgaard, Thor H., 1951, Descriptions Of Some Ore Deposits And Their Relationships To The Purcell Sills, Boundary County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet, No. 85, 31 P.

Reference (Deposit): Zartman, R. E., And Stacey, J. S., 1971, Lead Isotopes And Mineralization Ages In Belt Supergroup Rocks, Northwestern Montana And Northern Idaho: Econ. Geol., V. 66, P. 849 - 860.

Reference (Deposit): 1913 Compile State Of Idaho, 14th Annual Rpt.

Reference (Deposit): 1951 Compile Idaho Bureau Of Mines And Geol. Pamphlet No. 85

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.