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Carrot Ridge Area Phosphate Deposit

Prospect in Clark county in Idaho, United States with commodities Phosphorus-Phosphates, Vanadium, Uranium, Fluorine-Fluorite
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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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10071889
MRDS ID W015646
MAS/MILS ID 160330112
Record type Site
Current site name Carrot Ridge Area Phosphate Deposit
Alternate or previous names Area No. 1 Phosphate Deposit

Geographic coordinates

Geographic coordinates: -111.6453, 44.5308 (WGS84)
Elevation 2469
Relative position 16 MI WNW OF ISLAND PARK

Site location context

Political divisions (FIPS codes)

Clark(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Upper Red Rock Lake(quadrangle 1:24,000 scale)

Hebgen Lake(quadrangle 1:100,000 scale)

Ashton(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Henrys(hydrologic unit)

Upper Snake(hydrologic accounting unit)

Upper Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Caribou-Targhee National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Idaho Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 014N 041E 17,18,19,20 Idaho

Comments on the location information

  • Along Carrot Ridge, Location Approximate

Commodities

Commodity Importance
Phosphorus-Phosphates Primary
Vanadium Critical Tertiary
Uranium Tertiary
Fluorine-Fluorite Critical Tertiary

Materials information

Materials Type of material
Glauconite Gangue
Quartz Gangue
Collophane Unknown

Analytical data

Result B, SUB-MEMBER IS ACID-GRADE (HIGH-GRADE)
Result A 3.5 FT SAMPLE FROM BY SUB-MEMBER AVG. 30.2% P2O5
Result A 0.9 FT SAMPLE FROM B3 SUB-MEMBER AVG. 17.0% P2O5
Result MINOR VANADIUM AND 1 PART FLUORINE/10 PARTS P2O5

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Snake River Volcanics;Dinwoody Formation;Dinwoody Formation;Phosphoria Formation;Phosphoria Formation;Phosphoria Formation
    Rock description Snake River Volcanics;Dinwoody Formation;Dinwoody Formation;Phosphoria Formation;Phosphoria Formation;Phosphoria Formation
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Phosphoria Formation;;Quadrant Formation-Sandstone
    Rock description Phosphoria Formation;;Quadrant Formation-Sandstone

Nearby scientific data

(1) -111.6453, 44.5308
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Minor Faults, Including The Carrot Springs Fault And Surficial Bedding-Plane Faults

Ore body information

  • General form LENS
    Strike NW
    Dip 15 DEG SW
    Thickness 4.02M
    Depth to bottom 38.1M
  • General form TABULAR
    Strike N60W
    Dip 15S
    Thickness 1.5M
    Length 1220M
    Width 230M
    Area 50HA
    Depth to top 25M

Controls for ore emplacement

  • BEDDING

Comments on the geologic information

  • 5 Lithologic Members, A, B, C, D, and E, In the Phosphoria Formation

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Both
Deposit size Medium
Significant No

Mining district

District name Island Park Area

Land status

Ownership category National Forest
Area name Targhee National Forest

Ownership information

  • Type Operator
    Owner Bannock Chemical Co.

Comments on the reserve resource information

  • 4 Blocks Show Open-Pit Ore Reserves; Reserves Calculated By Using Structure Contours, Isochores, A Specific Gravity of 2.88 For the Phosphate Rock, A 3.9 Ft Ave. Thickness of Acid-Grade Phosphate Rock, and Areas As Determined By Structure Contour and Isochore Maps

Comments on the workings information

  • 16 Bulldozer Trenches, Numerous Drill Holes

Comments on development

  • Econ.Com: Jemmett Says This Area Has 4 Mining Blocks With Important Open-Pit Potential

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Thickness Above For Entire B-Member; the Acid-Grade B, Sub-Member Ave. 3.9 Ft Thick; Depth To Bottom Above Refers To Economic Mining Depth In 1955

Reporter information

Type Date Name Affiliation Comment
Reporter 1977-04-01 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 1992-03-18 Benjamin U.S. Bureau of Mines

Beyond USGS

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

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