Hall Mountain

The Hall Mountain is a thorium mine located in Boundary county, Idaho at an elevation of 3,399 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

Name: Hall Mountain  

State:  Idaho

County:  Boundary

Elevation: 3,399 Feet (1,036 Meters)

Primary Mineral: Thorium

Lat, Long: 48.98584, -116.41887

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.

Satelite image of the Hall Mountain

Hall Mountain MRDS details

Site Name

Primary: Hall Mountain
Secondary: Hall Mountain Thorium Group
Secondary: Hall Mountain Group
Secondary: Hall Mtn. Group
Secondary: Hall Mountain Thorite
Secondary: Golden Sceptre
Secondary: Wawa
Secondary: TMU
Secondary: T.M.U.
Secondary: The Man Upstairs
Secondary: Old Outcrop
Secondary: Pyrite Zone
Secondary: Berringer
Secondary: Barringer Prospect


Primary: Thorium
Secondary: Copper
Secondary: REE
Tertiary: Uranium


State: Idaho
County: Boundary
District: Moyie-Yaak 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.


Type: Located Claim


Type: Underground


Owner Name: Hall Mountain Thorite (Bruce Berringer)
Percent: 25.00
Home Office: Washington
Info Year: 1982

Owner Name: Nuclear Fuels Corp.
Percent: 75.00
Home Office: Washington
Info Year: 1983


Not available


Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Discovery Year: 1939
Years of Production:
Significant: Y
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains

Mineral Deposit Model

Not available


Name: Old Outcrop
Form: Fissure vein, Tabular

Name: Wawa
Form: Fissure vein, Tabular

Name: Golden Sceptre
Form: Fissure vein, Tabular

Name: Pyrite Zone
Form: Fissure vein, Lenticular


Not available


Alteration Type: L
Alteration: Propylitic


Not available

Analytical Data

Not available


Ore: Thorite
Gangue: Albite
Gangue: Calcite
Gangue: Chlorite
Gangue: Pyrite
Gangue: Sphene
Gangue: Quartz


Comment (Geology): Nelson Batholith May Be Distant Magma Source For Thorium Bearing Fluids

Comment (Reserve-Resource): Yttrium

Comment (Deposit): Property Is Made Up Of Four Individual Deposits, All Located On The West Slope Of Hall Mountain. Included Are The Golden Sceptre, Wawa, Old Outcrop And Pyrite Zone. The Tmu Prospect Was Not Included In Evaluation. Minor Uranium Is Noted In Thorium Area. Also Located In Section 13.

Comment (Reserve-Resource): The Group Consists Of Golden Sceptre, Wawa, Old Outcrop, Pyrite Zone, And Tmu. Ore Mined Ug And Op From 1939 To 1949. Second Owner Is Hall Mountain Thorite (Bruce Berringer)

Comment (Geology): Thorium Content Varies From Trace To Over 40 Percent Copper, Lead, Silver And Gold Values Were Noted In A Company Report Now In U.S. Bureau Of Mines Wfoc Files. (Reliability Unknown)

Comment (Production): Significant Development Has Occurred At The Golden Sceptre Mine For Copper And Silver; However, No Production Has Been Recorded Exploratory Mine Work At The Golden Sceptre Mine Exceeds 1500 Meters But Followed A Prospective Gold/Quartz Vein Rather Then The Thorium Rich Quartz/Calcite Vein.


Reference (Deposit): Young, J., M. Ballinger, C. Bloomster, M. Drost, W. Enderlin, S. Weakley, And M. H. Morgenstern. Economics Of Large-Scale Thorium Oxide Production; Assessment Of Domestic Resources. U.S. Doe Contract Ey-76-C-06-1830, 1980.

Reference (Deposit): Kiilsgaard, T.H. Descriptions Of Some Ore Deposits And Their Relationships To The Purcell Sills, Boundary County, Idaho. Idaho Bumines & Geol. Pamphlet No. 85, 1949, 33 Pp.

Reference (Deposit): Aughey, S. The Golden Sceptre Mining Company, Ltd. Private Co. Rep., Bumines WFOC Files, 1939, 8 Pp.

Reference (Deposit): Kauffman, J.D. Description And Evaluation Of The Wawa Prospect , Boundary County, Id. Bumines Mas Grant G0264004, 1977, 8pp.

Reference (Deposit): Anderson, Al. L. & C.N. Savage. Thorium And Rare Earths. Idaho Bumines & Geol., Spec. Rep. 1, 1949, Pp. 221-217.

Reference (Deposit): Staatz,M.H., Thorium-Rich Veins Of Hall Mountain In Northern Idaho. Econ. Geol. V. 66, 1972, Pp. 240-248.

Reference (Deposit): Staatz, M.H., T.J. Armbrustmacher, And Others. Principal Thorium Resources In The United States. U.S. Geol. Surv. Circ. No. 805, 1979.

Reference (Deposit): Newton, J.D., D. Lemoine, C. Adams, A. Anderson, And J. Shively. Study Of Two Idaho Thorite Deposits. Idaho Bumines And Geol. Pamphlet No. 122, 1960, 57 Pp.

Reference (Deposit): National Oceanic And Atmospheric Administration, Monthly Normals Of Temperature, Precipitation, And Heating And Cooling Degree Days 1941-1970. U.S. Dep. Of Commerce, Noaa Environ. Data Service, Idaho, 1970, 10 Pp.

Reference (Deposit): Lemoine, D. Thorite Deposits And General Geology Of The Hall Mountain Area, Boundary County, Idaho. Univ. Of Idaho Masters Thesis, 1959, 68 Pp.

Reference (Deposit): Hall Mountain Area, Boundary County, Idaho. Univ. Of Idaho Masters Thesis, 1959, 68 Pp.

Reference (Deposit): Long, K.R., Van Gosen. B.S., Foley, N.K., and Cordier, Daniel, 2010, The principal rare earth elements deposits of the United States--A summary of domestic deposits and a global perspective: U.S. Geological Survey Scientific Investigations Repoer 2010-5220, 103 p.

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