Boulder River Placer

The Boulder River Placer is a gold mine located in Jefferson county, Montana.

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 River Placer  

State:  Montana

County:  Jefferson

Elevation:

Primary Mineral: Gold

Lat, Long: 46.27083, -112.26111

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 River Placer

Boulder River Placer MRDS details

Site Name

Primary: Boulder River Placer


Commodity

Primary: Gold


Location

State: Montana
County: Jefferson
District: Boulder Mountains Area


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Not available


Production

Year: 1939
Mined: 735.000 cy
Material type: gravel
Description: Ap_Grade: ^Fine Out Of 7350cy Of Gravel


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Placer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

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


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene


Analytical Data

Not available


Materials

Ore: Gold


Comments

Comment (Location): LAT LONG ARE FOR BASIN.

Comment (Production): MBMG MEM 26, P. 48

Comment (Deposit): MOST OF THE BOULDER RIVER HAS BEEN MINED BUT THE MOST EXTENSIVE WORK HAS BEEN DONE BETWEEN BOULDER AND BASIN.

Comment (Workings): 1939 SCRAPER AND WASHER WAS PUT IN ON BOULDER PLACER

Comment (Geology): PLACER GOLD CAME FROM THE EROSIVE ACTION OF THE RIVER OVER THE OUTCROPS OF SOME GOLD-BEARING VEIN AND FROM ITS TRIBUTARIES ENTERING FROM THE NORTH DOWNSTREAM FROM THE TOWN OF BASIN.

Comment (Deposit): TEST WERE MADE AT THE MOUTH OF LITTLE BOULDER RIVER,BISON CR, AND ROCK CREEK. THEY ONLY SHOWED TRACES OF GOLD. ; INFO.SRC : 1 PUB LIT


References

Reference (Deposit): USGS PP 428, P. 52.

Reference (Deposit): MBMG MEM NO 5, P. 23.

Reference (Deposit): MBMG BULL 16, P. 14-15.

Reference (Deposit): MBMG MEM NO 26, P. 43, 48


Colorized Mining Photos

Drumlummon Mine at Marysville, Montana late 1880s

Western Mining History's collection of colorized mining photos includes incredible scenes from Montana: Best Historical Photos: Colorized Mining Scenes.