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
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.
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
Principal Gold Districts of Montana
In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.
