Fall Creek Phosphate Deposit

The Fall Creek Phosphate Deposit is a phosphorus-phosphates mine located in Bonneville county, Idaho at an elevation of 5,699 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

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Site Name

Primary: Fall Creek Phosphate Deposit
Secondary: E. A. Rex Uranium and Phosphate
Secondary: Fall Creek Lease Block
Secondary: Bear Creek Lease Block
Secondary: Fall Creek Adit

Commodity

Primary: Phosphorus-Phosphates
Secondary: Uranium

Location

State: Idaho
County: Bonneville
District: Willow Cr - Caribou 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

Holdings

Not available

Workings

Not available

Ownership

Owner Name: E. A. Rex Mining Co. ( 1966 )

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

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: UP TO 34.3 % P2O5 FROM 1.4 FT SAMPLE

Materials

Not available

Comments

Comment (Location): Sec. 21 Also Included In Lease

Comment (Development): 1363.95 Acre Lease ( 1966 )

Comment (Deposit): Thickness Above For Entire Phosphatic Shale Member

Comment (Deposit): See USBM RI 6801, p. 174 (Map) for extent of property; the location of this record is placed on a pit in the SW/4 SW/4 NE/4 Sec. 17. The property includes both the Fall Creek and Bear Creek lease blocks to the southeast and northwest.

Comment (Workings): Bulldozer Trench

References

Reference (Deposit): Smart, R. A., And Others, 1954 , Stratigraphic Sections Of The Phosphoria Formation In Idaho: USGS Circ. 327 , 22 P.

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): Service, A. L., 1966 , An Evaluation Of The Western Phosphate Industry And Its Resources, Pt. 3 , Idaho: USBM Rept. Inv. 6801 , 201 P.

Reference (Deposit): 1954 Recon R. A. Smart And Others, Circ. 329

Reference (Deposit): 1964 Recon D. A. Jobin And M. L. Schroeder, Map Mf - 277

Reference (Deposit): U.S. Bureau Of Mines Report of Invesigation 6801, 1966, No. 1-010764, P. 182.

Reference (Deposit): U.S. Bureau Of Mines Open-File Report MLA 8-92, 1992, Sample No. 121: Fig. 3, P. 10; Appendix A, P. 24; Appendix B, P. 26

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

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.