The Lemhi Union Mine is a lead and silver mine located in Lemhi county, Idaho at an elevation of 8,999 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: 8,999 Feet (2,743 Meters)
Commodity: Lead, Silver
Lat, Long: 44.3919, -113.26970
Map: View on Google Maps
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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.
Lemhi Union Mine MRDS details
Site Name
Primary: Lemhi Union Mine
Commodity
Primary: Lead
Primary: Silver
Secondary: Gold
Secondary: Copper
Location
State: Idaho
County: Lemhi
District: Spring Mountain 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
Not available
Workings
Type: Underground
Ownership
Owner Name: Lemhi Mining Co.
Production
Year: 1910
Time Period: 1909-1910
Material type: ORE
Description: Cp_Grade: ^39 % Pb, 12 Oz Ag/Ton Ave
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Discovery Year: 1882
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Lemhi Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration: Oxidized
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Eocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Devonian
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Devonian
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene
Analytical Data
Not available
Materials
Ore: Galena
Gangue: Iron
Comments
Comment (Deposit): Discovery Year: EARLY 1880'S
Comment (Production): Several Carloads Of Ore Produced In 1907 Ran 71% Pb, 48 Oz/Ton Ag, $5/Ton Au And 4% Cu.
Comment (Geology): Limestone Strikes N 20 Deg E And Dips 80 Deg Nw
Comment (Location): Near Head Of Lemhi Union Gulch; Location Approximate And Taken From Gilmore 1:62500 Map
Comment (Geology): Original alteration entry: Local - Oxidized
Comment (Geology): Original ore control entry: At Depth, Contact Of Limestone And Dike; Fissures
References
Reference (Deposit): Umpleby, J. B., 1913, Geology And Ore Deposits Of Lemhi County, Idaho: USGS Bull 528, P. 88.
Reference (Deposit): Bell, R. N., 1908, Ninth Annual Report Of The Mining Industry Report Of Idaho For The Year 1907
Reference (Production): Item 8, Umpleby, J. B., 1913, USGS Bull 528, P. 88; Item 1, Bell, R.N., 1908, Mining Industry Report For 1907
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.
