Cago No. 12 Claim

The Cago No. 12 Claim is a thorium mine located in Lemhi county, Idaho at an elevation of 7,598 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

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.

Site Name

Primary: Cago No. 12 Claim

Commodity

Primary: Thorium
Tertiary: REE
Tertiary: Silver

Location

State: Idaho
County: Lemhi
District: Lemhi Pass Area

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: Salmon Uranium And Thorium Co., Inc.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
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: Beaverhead Mountains

Mineral Deposit Model

Not available

Orebody

Form: LENS, LENTICULAR

Structure

Type: L
Description: Shearing, Fracturing, Slickensides

Alterations

Alteration Type: L
Alteration Text: Sericite

Rocks

Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Analytical Data: 1 HEMATITIC ORE SAMPLE CONTAINED 14.79% COMBINED RAE, TH OXIDES
Analytical Data: 2 OTHER HEMATITIC SAMPLES HAD 13.5 AND 9.6% COMBINED RAE AND TH OXIDES. 3 CHIP SAMPLES OF VEIN CONTAINED 0.085-0.29% THO2
Analytical Data: ANOTHER MORE SILICEOUS SAMPLE CONTAINED 0.7% RAE AND TH OXIDES

Materials

Ore: Thorite
Ore: Chalcopyrite
Ore: Xenotime
Ore: Rutile
Ore: Monazite
Ore: Allanite
Ore: Galena
Gangue: Barite
Gangue: Magnetite
Gangue: Chalcedony
Gangue: Pyrite
Gangue: Apatite
Gangue: Quartz
Gangue: Microcline
Gangue: Goethite

Comments

Comment (Commodity): DEPOSIT HAS MOST RADIOACTIVITY OF ANY IN THE DISTRICT

Comment (Development): ECON.COM: CONTENT OF RAE OXIDES EXCEEDS THAT OF THE THORIA BY A SMALL AMOUNT

Comment (Workings): 1 PIT, 8 LONG TRENCHES, 3 OPEN ADITS

Comment (Location): CAGO NO. 12 CLAIM A FEW HUNDRED YARDS DOWN THE IDAHO SLOPE OF THE CONTINENTAL DIVIDE NEAR CAMP CREEK, AN UPPER TRIBUTARY TO AGENCY CREEK

References

Reference (Deposit): STAATZ, M. H., 1972, GEOLOGY AND DESCRIPTION OF THE THORIUM-BEARING VEINS, LEMHI PASS QUADRANGLE, IDAHO AND MONTANA: USGS BULL. 1351, 94 P.

Reference (Deposit): NEWTON, J., AND OTHERS, 1960, STUDY OF TWO IDAHO THORITE DEPOSITS: IDAHO BUREAU OF MINES AND GEOLOGY PAMPH 122, P. 39.

Reference (Deposit): ANDERSON, A. L., 1958, URANIUM, THORIUM, COLUMBIUM, AND RARE EARTH DEPOSITS IN THE SALMON REGION, LEMHI COUNTY, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 115, 81 P.

Reference (Deposit): 1958 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 115

Reference (Deposit): 1960 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 122

Reference (Deposit): 1972 GEOLMAP STAATZ, M. H., BULL. 1351

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.