The Twin Brothers Mine is a gold mine located in Lemhi county, Idaho at an elevation of 4,600 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
Elevation: 4,600 Feet (1,402 Meters)
Commodity: Gold
Lat, Long: 45.5453, -113.92250
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.
Twin Brothers Mine MRDS details
Site Name
Primary: Twin Brothers Mine
Secondary: Twin Sisters Mine
Commodity
Primary: Gold
Tertiary: Copper
Tertiary: Lead
Tertiary: Silver
Location
State: Idaho
County: Lemhi
District: Gibbonsville District
Land Status
Land ownership: Private
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.
Holdings
Type: Patented
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Beaverhead Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Production): Total Production To 1913 Estimated At $300,000.
Comment (Development): 4 Pat Claims, 1 Pat Millsite, 10-Stamp Mill (1913)
Comment (Deposit): 4 Or 5 E-W Fissure Veins 5 Or 6ft Wide At Most
Comment (Workings): 5000 Ft Of Adits And Raises
Comment (Location): Info From Land.St :(1978)
Comment (Commodity): Lower Grade Ore Than Properties North Of Dahlonega Creek
Comment (Geology): Original ore control entry: Fissures
References
Reference (Deposit): Mining And Scientific Press, 1912, Vol. 105, P. 47-49.
Reference (Deposit): U.S. Bureau Of Mines Open-File Report MLA 93-25, 1993, P. 18-20.
Reference (Deposit): Mackenzie, 1949, U Of Id Ms Thesis
Reference (Deposit): Umpleby, J. B., 1913, U.S. Geological Survey Bulletin 528, P. 133-134.
Reference (Production): Umpleby, J. B., 1913, USGS Bulletin 528, 82 P.
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.
