Swan Valley Phosphate

The Swan Valley Phosphate is a phosphorus-phosphates mine located in Bonneville county, Idaho at an elevation of 5,899 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: Swan Valley Phosphate  

State:  Idaho

County:  Bonneville

Elevation: 5,899 Feet (1,798 Meters)

Primary Mineral: Phosphorus-Phosphates

Lat, Long: 43.4417, -111.44830

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 Swan Valley Phosphate

Swan Valley Phosphate MRDS details

Site Name

Primary: Swan Valley Phosphate
Secondary: Pritchard Creek Phosphate Deposit


Primary: Phosphorus-Phosphates
Tertiary: Vanadium
Tertiary: Uranium


State: Idaho
County: Bonneville
District: Pine Creek 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: Caribou National Forest


Type: Federal Lease


Not available


Owner Name: Anaconda Co.


Not available


Record Type: Site
Operation Category: Prospect
Operation Type: Surface
Discovery Method: Ore-Mineral In Place
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Caribou Range

Mineral Deposit Model

Not available


Not available


Not available


Not available


Name: Shale
Role: Host
Age Type: Host Rock
Age Young: Late Permian

Name: Shale
Role: Host
Age Type: Host Rock Unit
Age Young: Late Permian

Analytical Data

Analytical Data: OTHER SAMPLES GAVE UP TO 0.64% V2O5 AND 33.2% P2O5
Analytical Data: 4 SAMPLES, TOTALING 9.1 FT, OF PHOSPHATE ROCK RANGED FROM 55.04 - 69.89% CA3(PO4)2


Not available


Comment (Location): Ne End Of High Mountain Ridge N Of Pritchard Creek

Comment (Workings): 1 Bulldozer Trench And Underground Workings

Comment (Deposit): Thickness Above For Entire Phosphatic Shale Member In T 1 N, R 43 E, Sec 6

Comment (Location): This Is The Northwestern Part Of The E.A. Rex Leases


Reference (Deposit): Idaho Industrial Minerals,1975,Page 20.

Reference (Deposit): Gardner, L. S., 1961, Preliminary Geologic Map, Columnar Sections And Trench Sections Of The Irwin Quadrangle Caribou And Bonneville Counties, Idaho, And Lincoln And Teton Counties, Wyoming: USGS Open-File Rept.

Reference (Deposit): Jobin, D. A., And Schroeder, M. L., 1964, Geology Of The Conant Valley Quadrangle, Bonneville County, Idaho: USGS Mineral Inv. Field Studies Map Mf-277

Reference (Deposit): Idaho Dept. Of Labor And Industrial Services, 1975, First Annual Report Addendum, 95 P.

Reference (Deposit): 1961 Geolmap L. S. Gardner, Open-File Rept.

Reference (Deposit): 1964 Geolmap D. A. Jobin And M. L. Schroeder, Mineral Inv. Field Studies Map Mf-277

Reference (Deposit): 1975 Compile Idaho Dept. Labor And Industrial Services Addendum

Reference (Deposit): Idaho Bureau Of Mines And Geol. County Report 5, 1961, P. 63.

Reference (Deposit): U.S. Bureau Of Mines Report of Investigation 6801, 1966, P. 174.

Idaho Gold

Where to Find Gold in Idaho

"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 at Where to Find Gold in Idaho.