About this location
Always seek permission where required, follow local laws, and practice Leave No Trace. Locations and details are community-submitted and may be inaccurate. Not sure what's legal here? Read our full guide to rockhounding laws by land type.
Found Here
Geology and deposit
- Host rock
- Prichard Formation-Quartzite — Diorite, Quartzite
- Associated rock
- Purcell Sill-Diorite — Diorite
- Orebody form
- LENS, STRINGERS
Vein On Sill - Quartzite Contact
Fissure
Epidote
Mining history
- Status
- Prospect
- Operation type
- Underground
- Workings
- Underground
- Discovered
- 1955
Records and references
Kiilsgaard, Thor. H., 1951, Descriptions Of Some Ore Deposits And Their Relationships To The Purcell Sills, Boundary County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet, No. 85, 31 P.Le Moine, Denis, 1960, Geology Of Thorite Deposits Of The Hall Mountain Area, Boundary County, In Study Of Two Thorite Deposits: Idaho Bureau Of Mines And Geology Pamphlet, No. 122, P. 15 - 22.Powers, Harold A., 1955, Golden Septure: Idaho Bureau Of Mines And Geology Open - File Report.Le Moine, D., 1959 , Thorite Deposits And General Geology Of The Hall Mountain Area, Boundary County, Idaho: Moscow, Idaho, Univ. Of Idaho, M.S. Thesis, 68 P.5) Weis, P.L., And Others, 1958 , Reconnaissance For Radioactive Minerals In Washington, Idaho, And Western Montana, 1952 - 1955 : USGS Bulletin 1074-B, 48 P.6) Staatz, M.H., And Others, 1974 , Distribution And Occurrence Of Rare Earths In The Thorium Veins Of Hall Mountain, Idaho: USGS Jour. Research, V. 2 , No. 6 , P. 677 - 6835) Weis, P. L., And Others, 1958 , Reconnaissance For Radioactive Minerals In Washington, Idaho, And Western Montana 1952 - 1955 : USGS Bulletin 1074-B, 48 P.1951 Compile Idaho Bureau Of Mines And Geol. Pamphlet No. 85A.E.C. Inspected Property1958 Recon P. L. Weis And Others, Bulletin 1074-B1960 Geolmap Idaho Bureau Of Mines And Geol. Pamphlet No. 1221974 Compile M.H. Staatz And Others, Jour. Research, V. 2 , No. 6Soper, 1918, Mining And Science Press V 116, P 126Powers, Idaho Bureau Of Mines And Geol., 1955 (& 1956), Open - File Summary Report.
Data: USGS Mineral Resources Data System, record 10069824 — view the source record
Difficulty
Getting there
Location on Map
Coordinates: 48.99097, -116.42277
Nearby rockhounding locations
- Trust Mining Company Prospect — Azurite, ChrysocollaID · 2.1 mi
- Tungsten Hill Mine — Gold, SilverID · 9.2 mi
- Tommy Moran Prospect — Azurite, CalciteID · 10 mi
- Tilley Mine — Azurite, ChrysocollaID · 11.2 mi
- Geneva Claims — GalenaID · 12.8 mi
- Downey Prospect — Azurite, ChrysocollaID · 15 mi
Recommended Gear for Idaho

Estwing E3-22P Rock Pick
The industry-standard 22oz geological hammer. One-piece forged steel with shock-reduction grip.

Clear Anti-Fog Safety Glasses (4 Pack)
Adjustable, anti-fog lenses for clear vision in any conditions. About $5 per pair.

Watertight Medical Kit
Compact, waterproof first aid kit with bandages, moleskin, and field essentials.

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