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Blackfoot Mountains Phosphate Deposit

Occurrence in Bingham county in Idaho, United States with commodity Phosphorus-Phosphates
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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. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10096429
MRDS ID W019281
Record type Site
Current site name Blackfoot Mountains Phosphate Deposit

Geographic coordinates

Geographic coordinates: -111.79692, 43.04132 (WGS84)
Elevation 1905
Relative position 18.5 MI WSW OF GRAY; 33 MI SSE OF AMMON

Site location context

Political divisions (FIPS codes)

Bingham(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Paradise Valley(quadrangle 1:24,000 scale)

Palisades(quadrangle 1:100,000 scale)

Driggs(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 Bingham

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 004S;005S 040E;040E 35,34,29,05,06,02 Idaho

Comments on the location information

  • DEPOSIT ALSO FOUND IN SECTIONS 22 , 28 , AND 33 IN T4S, R40E; LOCATION APPROXIMATE AND PLOTTED IN T5S, R40E, SECTION 2

Commodities

Commodity Importance
Phosphorus-Phosphates Tertiary

Analytical data

Result PHOSPHATE ROCK SAMPLES RANGED FROM 21.73 - 33.34 % P2O5, EQUIVALENT TO 47.4 - 72.7 % CA3(PO4)2

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Willow Creek Lava Field-Basalt;Wells Formation;Wells Formation
    Rock description Willow Creek Lava Field-Basalt;Wells Formation;Wells Formation
    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;;Brazer Limestone
    Rock description Phosphoria Formation-Phosphatic Shale, Chert;;Brazer Limestone

Nearby scientific data

(1) -111.79692, 43.04132
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Bannock Overthrust, Snowdrift Anticline, Georgetown Syncline, Minor Faults

Ore body information

  • General form BLANKET
    Strike N 47 DEG W
    Dip 65 DEG W
    Thickness 9.6M
    Depth to bottom 1524M

Economic information about the deposit and operations

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

Mining district

District name Blackfoot R Reservoir Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Monsanto Co. ( 1966 ), Fmc Corp. ( 1966 )

Comments on the reserve resource information

  • ITEMS 1 AND 2 EST. FROM 360 ACRES OF PHOSPHATE LAND; ITEM 1 IS FOR IF PHOSPHATE BEDS ARE HORIZONTAL; ITEM 2 ALLOWS A 60 DEG DIP; ITEM 3 EST. FROM 400 ACRES OF PHOSPHATE LAND

Workings at the site

  • Type of workings Surface
    Overall length 15.24M
    Overall width 0.61M

Comments on the workings information

  • TRENCH ABOVE AVE. 2.5 FT DEEP

Comments on development

  • MONSANTO CO. LEASED 671 ACRES IN T4S, R40E, SECTIONS 28 , 33 , 34 , 35 IN 1950; FMC CORP. LEASED 80 ACRES IN T4S, R40E, SECTION 29 IN 1951; MONSANTO LEASED 160 ACRES IN T4S, R40E, SECTION 29 IN 1949

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THICKNESS ABOVE IS TOTAL FOR PHOSPHATIC SHALE; THICKEST BED IS 5 FT, 5 IN; THERE ARE 8 PHOSPHATE BEDS IN ALL; BEST SAMPLE READINGS FROM 1 FT 8 IN THICK BED NEAR BOTTOM

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-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.

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