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

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

Commodity

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

Location

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

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Idamont Lead-Zinc Mining Co.

Production

Not available

Deposit

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

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Purcell Range

Mineral Deposit Model

Not available

Orebody

Name: Idamont Property Pb-Zn orebody

Form: Placer

Structure

Type: L
Structure: Vein

Alterations

Alteration Type: L
Alteration: Sericitization

Rocks

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: 4 SAMPLES FOUND 850 - 930 PARTS/THOUSAND AU, 58 - 133 PARTS/THOUSAND AG, 12 - 21 PARTS/THOUSAND BASE METAL
Analytical Data: PB ISOTOPES: PB206/PB204 = 16.296
Analytical Data: PB207/PB204 = 15.398

Materials

Ore: Galena
Gangue: Quartz

Comments

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

References

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" 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.