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Henry North Continuation

Past Producer in Caribou county in Idaho, United States with commodities Phosphorus-Phosphates, Fluorine-Fluorite, REE, Uranium, Vanadium
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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. Mineral rights holdings
  16. Land status
  17. Ownership information
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10078018
MRDS ID W026131
MAS/MILS ID 0160290161
Record type Site
Current site name Henry North Continuation

Geographic coordinates

Point of reference Pit
Geographic coordinates: -111.50818, 42.905 (WGS84)
Elevation 1890
Location accuracy 10(meters)
Relative position 1 MI NE OF HENRY, IDAHO. Point placed in center of large pit.

Site location context

Political divisions (FIPS codes)

Caribou(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Henry(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 006S 042E 10 Idaho

Comments on the location information

  • Located On U.S.Forest Service Lands. Closed - Mined Out.

Commodities

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

Materials information

Materials Type of material
Travertine Gangue

Analytical data

Result RANDOM SAMPLES RANGE 26.8 - 32.7 % P2O5
Result 119 SAMPLES OF STRATIGRAPHIC SECTION GAVE UP TO 36.0 % P2O5

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Dinwoody Formation-Shale;Dinwoody Formation-Limestone;Thaynes Formation-Limestone;Thaynes Formation-Sandstone;Thaynes Formation-Shale
    Rock description 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

Pit (1) -111.50818, 42.905
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure name Georgetown Syncline
Structure description Georgetown Syncline, Wooley Valley Anticline, Pelican, Henry, Enoch Valley And Slug Valley Faults
Type of structure Regional
Structure name Wooley Valley Anticline
Type of structure Regional
Structure name Pelican Fault
Type of structure Regional
Structure name Henry Fault
Type of structure Regional
Structure name Enoch Valley Fault
Type of structure Regional
Structure name Slug Valley Fault

Ore body information

  • General form IRREGULAR
    Strike N 50 DEG W
    Dip 50 DEG E
    Thickness 1.98M
    Depth to bottom 1219.2M
  • General form TABULAR
    Strike N40W
    Dip 60E
    Thickness 22M
    Length 2400M
    Width 80M
    Depth to top 40M
  • General form TABULAR
    Strike N40W
    Dip 60E
    Thickness 22M
    Length 2400M
    Width 1000M
    Depth to top 100M

Controls for ore emplacement

  • Structure
  • Bedding
  • Lithology

Comments on the geologic information

  • Assumed Phosphorite Densities: High=2.3, Low=2:1

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Non-metallic
Deposit size Medium
Significant No

Mining district

District name Blackfoot River Reservoir Area

Mineral rights holdings

Type of mineral rights Federal Lease
Type of mineral rights State Lease
Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner U.S. Bureau Of Land Management
    Year 1975
  • Type Owner
    Owner State Of Idaho
    Year 1975
  • Type Owner-Operator
    Owner Monsanto Co.
    Year 1975

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Indicated 7600000mt ore
    Demonstrated 7600000mt ore
    Total resources 7600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 28.1 wt-pct Phosphorus Trace 1975
  • Type In-situ
    Estimate year 1975
    Indicated 3300000mt ore
    Demonstrated 3300000mt ore
    Total resources 3300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 17 wt-pct Phosphorus Trace 1975
  • Type In-situ
    Estimate year 1975
    Indicated 10900000mt ore
    Demonstrated 10900000mt ore
    Total resources 10900000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 27.4 wt-pct Phosphorus Trace 1975

Comments on the reserve resource information

  • Elements Included In Rare Earth Analysis Are: Yitrium (500ppm), Lanthanum (250ppm), Neodmyium (150ppm), Gadolinium (60ppm) (Element Analysis From Phosphate Eis) Low Grade Resources Are Not Recognized By Monsanto. Nor Are They Apparent In The USGS Trenched Section Therefore Paramarginal Low Grade Resources Are Not Proposed. M1c2 Represents Minable Reserves At The N Henry (1/79). M2 Not Used. M1c1 M3c1 Not Used. M3c2 Medium Plus High Grade As Per Following: P.90-.75 No Entry. P.50 Resources To 250 Meters Downdip In. P.25 Resources Within Lease Boundary In Phosphoria. M3c2 Phosphorous Pentoxide Analysis Reduced 3 Percentage Points All Other Analysis Reduced Proportionately All Matrices-All Elements Assumed Proportional To P205
  • Resources From Garrand Study Indicated Is 3.5:1,Inferred 9:1 Garrands Resource Subunits Which Correspond To The Henry Are Lanes Creek-Areas 1a Henry Ne Areas 2b-6b

Workings at the site

  • Type of workings Surface
    Overall length 106.68M
    Overall width 2.13M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Overburden Thickness 40
    Primary Material Cover SAND, GRAVEL
    Secondary Material Cover M-HARD ROCKS
    Hardness of Ore M-HARD ROCKS
    Max. Pit Slope (degrees) 40
    Capacity 3600
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 8.27
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1979

Comments on the workings information

  • 1 Bulldozer Trench

Reference information

Bibliographic references

  • 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.

  • 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.

  • Deposit

    Mansfield, G. R., 1927 , Geography, Geology, And Mineral Resources Of Part Of Southeastern Idaho: USGS Prof. Paper 152 , 453 P.

  • Deposit

    Davidson, D. F., And Others, 1953 , Stratigraphic Sections Of The Phosphoria Formation In Idaho, 1949 , Part 2 : USGS Circ. 305 , 28 P.

  • Geology

    Martin, G. W., 1958, Mineralogy Of Phosphate Oolites: Economic Geology, V. 53, No. 8, December, P. 1046-1048.

  • 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.

  • Deposit

    Powell, J. D., 1974 , Evaluation Of Phosphate Resources In Southeastern Idaho: Idaho Bureau Of Mines And Geology Inf. Circ. 25 , 33 P.

  • 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.

  • 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.

  • 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.

  • 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.

  • Deposit

    Carter, Russell A., 1978, An Integrated Industry - Phosphate Mining And Milling In Idaho: Mining Engineering, V. 30, No. 1, P. 29-36.

  • 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.

  • 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.

  • 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

  • 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

  • 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.

General comments

Subject category Comment text
Deposit 203.9 Ft Thickness Of Phosphatic Shale Member; 6560 Acre Area Held As Phosphate Land ( 1927 )
Deposit Ore Control- Present Operations Require Near Surface Leach To Sufficiently Decrease Cao & Mgo For The Phosrock To Be Considered Ore

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 07-MAR-1995 Spear, James M. 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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