The Armstrong Prospect is a uranium mine located in Lemhi county, Idaho at an elevation of 4,400 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: 4,400 Feet (1,341 Meters)
Commodity: Uranium
Lat, Long: 45.0811, -113.92720
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.
Armstrong Prospect MRDS details
Site Name
Primary: Armstrong Prospect
Secondary: Donna No. 1
Commodity
Primary: Uranium
Location
State: Idaho
County: Lemhi
District: Eureka District
Land Status
Land ownership: BLM Administrative Area
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
Not available
Workings
Not available
Ownership
Owner Name: Hepburn T. Armstrong
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Discovery Method: 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
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Some Hydrothermal
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Analytical Data
Analytical Data: SELECTED SAMPLES TO ASSAY .2 - 1.0% U3O8
Materials
Ore: Carnotite
Gangue: Hematite
Comments
Comment (Location): On Williams Cr., 1445 Ft S And 1670 Ft E Of NW Corner Of Sec. 12 ; Info From Land.St :(1978)
Comment (Reserve-Resource): Probably A Few Tons Of Ore Could Be Obtained By Careful Sorting.
References
Reference (Deposit): Armstrong, F. C., 1964, Mineral Resources - Uranium, In Mineral And Water Resources Of Idaho: Idaho Bureau Of Mines And Geology Special Report No. 1, P. 233 - 239.
Reference (Deposit): Powers, Harold A., 1955, Armstrong Prospect: Idaho Bureau Of Mines And Geology Open - File Report, 3 P.
Reference (Deposit): 1955 Other Idaho Bureau Of Mines And Geology; Open - File Report
Reference (Deposit): 1964 Compile Idaho Bureau Of Mines And Geology Special Report No. 1
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.
