Caldwell Canyon Proposed Mine

Site Name

Primary: Caldwell Canyon Proposed Mine
Secondary: Caldwell Canyon Site
Secondary: Dry Canyon Prospect 1966

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Commodity

Primary: Phosphorus-Phosphates
Tertiary: REE
Tertiary: Vanadium
Tertiary: Uranium
Tertiary: Fluorine-Fluorite

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Location

State: Idaho
County: Caribou
District: Slug Creek

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Land Status

Land ownership: Private
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.

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Holdings

Type: Patented
Type: State Lease
Type: Federal Lease

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Workings

Type: Surface

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Ownership

Owner Name: Monsanto Co.
Home Office: Missouri
Info Year: 1978

Owner Name: State Of Idaho
Home Office: Idaho
Info Year: 1978

Owner Name: U.S. Bureau Of Land Management
Info Year: 1978

Owner Name: U.S. Forest Service
Info Year: 1978

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Production

Not available

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Deposit

Record Type: Deposit
Operation Category: Prospect
Operation Type: Surface
Mining Method: Open Pit
Milling Method: Washing
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: M

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin

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Mineral Deposit Model

Model Name: Phosphate, upwelling type

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Orebody

Form: TABULAR

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Structure

Type: L
Structure: Minor Folds And Faults

Type: R
Structure: Schmid Syncline

Type: R
Structure: Slug Creek Syncline

Type: L
Structure: Johnson Fault

Type: R
Structure: Aspen Range Anticline

Type: R
Structure: Slug Valley Fault

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Alterations

Not available

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Rocks

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

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

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Analytical Data

Analytical Data: 84 SAMPLES OF STRATIGRAPHIC SECTION GAVE 38.6 % P2O5 MAX.

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Materials

Unknown: Pyrite
Unknown: Kaolinite
Unknown: Limonite
Unknown: Montmorillonite
Unknown: Orthoclase
Unknown: Quartz
Unknown: Sericite
Unknown: Calcite
Unknown: Chalcedony
Unknown: Collophane
Unknown: Dolomite

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Comments

Comment (Workings): THE MONSANTO COMPANY PROPOSED TWO PITS. THE COMBINED PIT LENGTHS TOTAL 5300 METERS LONG. PIT WIDTHS WILL AVERAGE 120-240 METERS WIDE (AVERAGE 148 METERS). THE PIT DEPTH WILL BE UP TO 110 METERS DEEP, BUT AVERAGING 76 METERS. TOTAL AREA DISTURBED WILL BE 285 HECTARES, 79 FOR PITS, 136 FOR DUMPS, 32 FOR ROADS, AND 38 HECTARES FOR SAFETY AND WATER CONTROL MEASURES.

Comment (Exploration): ACCORDING TO EIS (1978), EXCEPT FOR USGS TRENCHES NO EXPLORATION WORK HAS BEEN DONE. MONSANTO WAS DRILLING 30 HOLES ON THE PROPERTY IN 1979.

Comment (Location): DEPOSIT IS ALSO IN T8S R43E SECS 12,12,24, T8S R44E SECS 18,19.

Comment (Ownership): PROPERTY CONSISTS OF STATE AND FED LEASES AND PATENTED LAND FED.LEASES I-O2, I-013738, I-014080

Comment (Production): TOTAL ANNUAL CALCINED PHOSHPATE PRODUCT EQUALS 624,750 TONNE

Comment (Geology): 115.9 FT THICKNESS OF PHOSPHATIC SHALE MEMBER ( SECTION 1 ); THICKNESS ABOVE FOR 2 ORE ZONES

Comment (Development): 1029.36 ACRE LEASE FOR PROPOSED MINE ( 1975 )

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References

Reference (Deposit): THOMPSON, M.E ., 1954, FURTHER STUDIES OF THE DISTRIBUTION OF URANIUM IN RICH PHOSPHATE BEDS OF THE PHOSPHORIA FORMATION: U.S. GEOLOGICAL SURVEY BULLETIN 1009-D, P. 107-122

Reference (Reserve-Resource): GARRAND, L. J., 1975, PHOSPHATE STUDY SOUTHEASTERN IDAHO, FOR U.S. DEPARTMENT OF AGRICULTURE, CARIBOU NATIONAL FOREST, U.S. DEPARTMENT OF AGRICULTURE CONTRACT NO. 50-820: GARRAND CORP.

Reference (Deposit): SERVICE, A. L. AND POPOFF, C. C., 1964, AN EVALUATION OF THE WESTERN PHOSPHATE INDUSTRY AND ITS RESOURCES (IN FIVE PARTS), 1. INTRODUCTION REVIEW: U.S. BUREAU OF MINES, REPORT OF INVESTIGATIONS 6485, 86 P.

Reference (Deposit): THOMPSON, M. E., 1953, DISTRIBUTION OF URANIUM IN RICH PHOSPHATE BEDS OF THE PHOSPHORIA FORMATION: U.S. GEOLOGICAL SURVEY BULLETIN 988-D, P. 45-65

Reference (Deposit): SERVICE, A. L., AND PETERSEN, N. S., 1967, AN EVALUATION OF THE WESTERN PHOSPHATE INDUSTRY AND ITS RESOURCES (IN FIVE PARTS) TRENDS AND OUTLOOK: U.S. BUREAU OF MINES, REPORT OF INVESTIGATIONS 6935, 131 P.

Reference (Deposit): SERVICE, A. L., 1966, AN EVALUATION OF THE WESTERN PHOSPHATE INDUSTRY AND ITS RESOURCES (IN FIVE PARTS), 3. IDAHO: U.S. BUREAU OF MINES, REPORT OF INVESTIGATIONS 6801, 201 P.

Reference (Deposit): MC DIVITT, J. F., 1956, ECONOMIC EVALUATION OF PHOSPHATE AND OTHER MINERALS IN SOUTHERN IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY, PAMPHLET NO. 111, 48 P.

Reference (Deposit): RULE, A. R., D. E. KIRBY, AND D. C. DAHLIN, 1978, RECENT ADVANCES IN BENEFICIATION OF WESTERN PHOSPHATES: MINING ENGINEERING, V. 30, NO. 1, P. 37-40.

Reference (Deposit): POWELL, J. D., 1974, EVALUATION OF PHOSPHATE RESOURCES IN SOUTHEASTERN IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY, INFORMATION CIRCULAR NO. 25, 33 P.

Reference (Deposit): LI, TA M., 1978, SOUTHEASTERN IDAHO PHOSPHATE MINING: HOW AN ENVIRONMENTAL IMPACT STATEMENT DISTORTS GROWTH PLANS: MINING ENGINEERING, V. 30, NO. 1, P. 25-28.

Reference (Geology): EMIGH, G. D., 1958, PETROGRAPHY, MINERALOGY AND ORIGIN OF PHOSPHATE PELLETS IN THE PHOSPHORIA FORMATION: IDAHO BUREAU OF MINES AND GEOLOGY, PAMPHLET NO. 114, 60 P.

Reference (Geology): MARTIN, G. W., 1958, MINERALOGY OF PHOSPHATE OOLITES: ECONOMIC GEOLOGY, V. 53, NO. 8, DECEMBER, P. 1046-1048.

Reference (Deposit): DAY, R. L., 1973, TRENDS IN THE PHOSPHATE INDUSTRY OF IDAHO AND THE WESTERN PHOSPHATE FIELD: IDAHO BUREAU OF MINES AND GEOLOGY, PAMPHLET 155, 63 P.

Reference (Deposit): CARTER, RUSSELL A., 1978, AN INTEGRATED INDUSTRY - PHOSPHATE MINING AND MILLING IN IDAHO: MINING ENGINEERING, V. 30, NO. 1, P. 29-36.

Reference (Geology): O'MALLEY, F. W., DAVIDSON, D. F., HOPPIN, R. A., SHELDON, R. P., 1953, STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FORMATION IN IDAHO, 1947-48, PT. III: U. S. GEOLOGICAL SURVEY TRACE ELEMENTS INVESTIGATIONS REPORT 188, P. 20-22.

Reference (Reserve-Resource): U.S GEOLOGICAL SURVEY, BUREAU OF LAND MANAGEMENT, AND FOREST SERVICE, 1978, FINAL ENVIRONMENTAL IMPACT STATEMENT/ DEVELOPMENT OF PHOSPHATE RESOURCES IN SOUTHEASTERN IDAHO, FOUR VOLUMES.

Reference (Geology): MC KELVEY, V. E., DAVIDSON, D. F., O'MALLEY, F. W., SMITH, L. E., ARMSTRONG, F. C., AND SHELDON, R. P., 1952, STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FORMATION IN IDAHO, 1947-48, PT. 1: U.S. GEOLOGICAL SURVEY TRACE ELEMENTS INVESTIGATIONS REPORT 183, P. 18-28.

Reference (Geology): GULBRANDSEN, R. A., MC LAUGHLIN, K. P., HUNKALA, F. S., AND CLABAUGH, S. E., 1956, GEOLOGY OF THE JOHNSON CREEK QUADRANGLE, CARIBOU COUNTY IDAHO: U. S. GEOLOGIC SURVEY BULL. 1042-A, P. 1-21.

Reference (Geology): CRESSMAN, E. R., AND GULBRANDSEN, R. A., 1955, GEOLOGY OF THE DRY VALLEY QUADRANGLE, IDAHO: U. S. GEOLOGICAL SURVEY BULL. 1015-I, P. 257-270.

Reference (Deposit): MANSFIELD, G. R., 1927 , GEOGRAPHY, GEOLOGY, AND MINERAL RESOURCES OF PART OF SOUTHEASTERN IDAHO: USGS PROF. PAPER 152 , 453 P.

Reference (Geology): MC KELVEY, V. E., DAVIDSON, D. F., O'MALLEY, F. W., AND SMITH, L. E., 1953, STRATIGRAPHIC SECTIONS OF THE PHOSPHORIA FORMATION IN IDAHO 1947-48, PT. 1: U.S. GEOLOGICAL SURVEY CIRCULAR 208, P. 14-24.

Reference (Deposit): 1927 RECON G. R. MANSFIELD, PROF. PAPER 152

Reference (Commodity): 1975 RECON DRAFT ENVIRONMENTAL IMPACT STATEMENT, V. 2 , PT. 9.3

Reference (Deposit): 1966 RECON USBM REPT. INV. 6801

Reference (Deposit): 1953 COMPILE V. E. MC KELVEY AND OTHERS, CIRC. 208

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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.