Phosphate Deposit

Occurrence in Caribou county in Idaho, United States with commodity Phosphorus-Phosphates
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10096451
MRDS ID W026133
Record type Site
Current site name Phosphate Deposit
Alternate or previous names Monsanto Lease

Geographic coordinates

Geographic coordinates: -111.68692, 42.96272 (WGS84)
Elevation 1951
Relative position 4 MI NW OF BLACKFOOT RIVER RESERVOIR

Site location context

Political divisions (FIPS codes)

Caribou(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Reservoir Mountain(quadrangle 1:24,000 scale)

Soda Springs(quadrangle 1:100,000 scale)

Preston(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blackfoot(hydrologic unit)

Upper Snake(hydrologic accounting unit)

Upper Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Idaho Caribou

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 005S 041E 19,20,29,30 Idaho

Comments on the location information

  • MONSANTO LEASE IN SECTIONS 19 , 20

Commodities

Commodity Importance
Phosphorus-Phosphates Primary

Analytical data

Result RANDOM SAMPLES RANGED FROM 26.3 - 32.69 % P2O5 , 59 - 67 % CA3(PO4)2
Result 94 SAMPLES OF STRATIGRAPHIC SECTION GAVE 36.0 % P2O5 MAX ( SECTION 20 )

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Wells Formation-Sandstone;Wells Formation-Limestone;Dinwoody Formation-Shale;Dinwoody Formation-Limestone;Thaynes Formation-Limestone;Thaynes Formation-Sandstone;Thaynes Formation-Shale
    Rock description Wells Formation-Sandstone;Wells Formation-Limestone;Dinwoody Formation-Shale;Dinwoody Formation-Limestone;Thaynes Formation-Limestone;Thaynes Formation-Sandstone;Thaynes Formation-Shale
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Phosphoria Formation-Phosphatic Shale, Chert, Sandstone;;;
    Rock description Phosphoria Formation-Phosphatic Shale, Chert, Sandstone;;;

Nearby scientific data

(1) -111.68692, 42.96272

Economic information

Geologic structures

Type of structure Regional
Structure description Snowdrift Anticline, Georgetown And Reservoir Synclines, Little Gray Fault

Ore body information

  • General form IRREGULAR
    Strike N 58 DEG W
    Dip 30 DEG W
    Thickness 1.68M
    Depth to bottom 1524M

Controls for ore emplacement

  • Structure

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Deposit size Medium
Significant No

Mining district

District name Blackfoot River Reservoir Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Monsanto Co.

Workings at the site

  • Type of workings Surface
    Overall length 35.81M

Comments on the workings information

  • BULLDOZER TRENCH ( SECTION 20 )

Comments on development

  • 1966 MONSANTO LEASE COVERS 120 ACRES

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit 2680 ACRE AREA HELD AS PHOSPHATE LAND BY MANSFIELD ( 1927 ); 196 FT THICKNESS PHOSPHATIC SHALE MEMBER ( SECTION 20 )

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.