The Tom Jefferson Claims is a cobalt and copper mine located in Lemhi county, Idaho at an elevation of 7,300 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: 7,300 Feet (2,225 Meters)
Commodity: Cobalt, Copper
Lat, Long: 45.12974, -114.33493
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.
Tom Jefferson Claims MRDS details
Site Name
Primary: Tom Jefferson Claims
Commodity
Primary: Cobalt
Primary: Copper
Tertiary: Nickel
Tertiary: Gold
Location
State: Idaho
County: Lemhi
District: Blackbird 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: Salmon National Forest
Holdings
Type: Patented
Type: Located Claim
Workings
Not available
Ownership
Owner Name: C. W. Lyon
Years: 1955 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Salmon River Mountains
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR LENS
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Oxidation
Rocks
Name: Gabbro
Role: Associated
Age Type: Associated Rock
Age Young: Eocene
Name: Gabbro
Role: Associated
Age Type: Associated Rock Unit
Age Young: Eocene
Name: Gabbro
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Gabbro
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: 1.9% CO, 5.6% CU, 0.2 OZ. PER TON AU, .8 % NI
Materials
Ore: Cobaltite
Ore: Malachite
Ore: Gold
Ore: Cuprite
Gangue: Quartz
Gangue: Magnetite
Comments
Comment (Location): On Divide Between Meadow Creek And W. Fork Of Little Deer Creek
Comment (Workings): Workings Are Very Small With Many Small Surface Cuts.
Comment (Development): 4 Patented And 14 Unpatented Claims
References
Reference (Deposit): Canney, F.C., 1953, Preliminary Report Of Geochemical Investigations In The Blackbird District, Lemhi County, Idaho: USGS Open-File Rept.
Reference (Deposit): Umpleby, J.B., 1913, Geology And Ore Deposits Of Lemhi County, Idaho: USGS Bulletin 528, 182 P.
Reference (Deposit): Anderson, A.L., 1943, Preliminary Report On The Cobalt Deposits In The Blackbird District, Lemhi County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 61, 34 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.
