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Fort Green Mine

Producer in Polk county in Florida, United States with commodities Aluminum, Fluorine-Fluorite, Iron, Magnesite, Phosphorus-Phosphates, Uranium
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Mineral rights holdings
  15. Land status
  16. Ownership information
  17. Production statistics
  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 10192242
MRDS ID ISM0360
MAS/MILS ID 0121050002
Record type Site
Current site name Fort Green Mine
Alternate or previous names Fort Green Mine (IMC-Agrico)

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -82.01, 27.67 (WGS84)
Elevation 40
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Polk(county)

Florida(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Duette NE(quadrangle 1:24,000 scale)

Saint Petersburg(quadrangle 1:100,000 scale)

Saint Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Peace(hydrologic unit)

Peace(hydrologic accounting unit)

Peace-Tampa Bay(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States Florida Polk

Public Land Survey System information

Meridian Township Range Section Fraction State
Tallahassee 032 S 023 E 28 W2SWNE Florida

Comments on the location information

  • 2 Km Se of Bartow; Rail Connection With Port Sutton On Tampa Bay; Areas of Clear Springs & Noralyn & Kingsford Mines Are 152.7 Km2 Large

Commodities

Commodity Importance
Aluminum Critical Tertiary
Fluorine-Fluorite Critical Tertiary
Iron Tertiary
Magnesite Tertiary
Phosphorus-Phosphates Primary
Uranium Tertiary

Materials information

Materials Type of material
Collophane Ore
Dolomite Gangue
Montmorillonite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 244
USGS model code 34d
Deposit model name Phosphate, warm current type

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Clay, Mud
  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

Ore Body (1) -82.01, 27.67
ListMap

Economic information

Ore body information

  • Thickness 3.1M
    Length 7940M
    Width 7940M
    Area 8437HA
    Depth to top 6.7M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 MASSIVE
    Type of Orebody #2 DISSEMINATED
    Shape of Orebody #2 IRREGULAR
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control LITHOLOGY
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 4.5
    Avg. Thick. Unconsol. Mat. 6.7
    Min. Thick. Unconsol. Mat. 4.5
    Total Surface Area (HA) 8437
    Date of Last Modification 850523

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Both
Significant Yes
Discovery year 1920
Mining method Strip-Level
Year of first production 1975
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Central Florida Phosphate District
District name Land Pebble Phosphate District

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner IMC-Agrico Co.
    Interest 100
    Home office Florida
    Year 1997
  • Type Owner
    Owner IMC Fertilizer Group Inc.
    ID 800177
    Interest 50
    Home office Illinois
    Year 1994
  • Type Owner
    Owner Freeport-McMoran Inc. (Parent Of Agrico Co.)
    ID 800768
    Interest 100
    Home office Louisiana
    Year 1994

Comments on the ownership information

  • ON MARCH 1, 1987, FREEPORT-MCMORAN INC. PURCHASED AGRICO CHEMICAL COMPANY.

Production statistics

  • Year 1975
    Description 8046000 Mt Ore
  • Year 1976
    Description 8177000 Mt Ore
  • Year 1977
    Description 11220000 Mt Ore
  • Year 1978
    Description 13238000 Mt Ore
  • Year 1979
    Description 14574000 Mt Ore
  • Year 1980
    Description 15238000 Mt Ore
  • Year 1981
    Description 11774000 Mt Ore
  • Year 1982
    Description 10527000 Mt Ore
  • Year 1983
    Description 14288000 Mt Ore
  • Year 1984
    Description 13485300 Mt Ore
  • Year 1985
    Description 12820300 Mt Ore
  • Year 1986
    Description 12903000 Mt Ore

Reserves and resources

  • Type In-situ
    Estimate year 1985
    Demonstrated 60633000mt ore
    Total resources 60633000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 11.4 wt-pct Phosphorus Major 1985

Comments on the reserve resource information

  • AGRICO WAS UNWILLING TO DIVULGE GRADES. THE ONLY DATA AVAILABLE COULD NOT BE VERIFIED AND, THEREFORE WAS NOT ENTERED.
  • ADIT UPDATE 1993: OPERATIONS ARE ONGOING AT ABOUT 10,900,000 MT/YR AND AT THIS RATE ARE EXPECTED TO CONTINUE UNTIL ABOUT 2008. AN EXTRA DRAGLINE AND PUMPING PIT WAS ADDED TO THE MINING OPERATION IN 1992.

Workings at the site

  • Type of workings Surface
    Area 6360HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .91
    Percent Waste Rock 75
    Avg. Overburden Thickness 6.7
    Primary Material Cover SAND, SILT
    Percentage 20
    Secondary Material Cover SAND, GRAVEL
    Percentage 80
    Hardness of Ore SAND, SILT
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 60
    Capacity 36288
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 1.26
    Units of Production $/MT ORE
    Operating Days per Year 341
    Operating Shifts per Day 3
    Year of Information 1985

Comments on the workings information

  • TOTAL LAND HOLDING IS 10,000 HECTARES

Comments on other economic factors

  • ALL TM COSTS ARE EXPRESSED IN TERMS OF DRY TONS.
  • DILUTION RATE IS 10% BARREN MATERIAL.

Reference information

Bibliographic references

  • Deposit

    U.S. BUREAU OF MINES. COMPILATION OF PROPRIETARY, INDIVIDUAL COMPANY, PRODUCTION STATISTICS (FOR THE YEARS 1984 THROUGH 1986).

  • Production

    OLSON, STEVEN I., AND HAROLD H. MILLER, 1981, IMPROVED RECOVERY OF FLORIDA PHOSPHATE ROCK BY MODIFYING STANDARD 14 CU-M (500 CU-FT) WEMCO CELLS WITH 28 CU-M (1000 CU-FT) CELL MECHANISMS: SOCIETY OF MINING ENGINEERS PREPRINT #81-321, NOVEMBER 1981, 13 P.

  • Ownership

    BONNIE DODSON, SENIOR MINES PLANNER, AGRICO CHEMICAL CO.; 8/26/87 TELEPHONE CONVERSATION WITH LEE OSMONSON.

  • Reserve-Resource

    WILLIAMS COMPANIES, 1984, SECURITIES AND EXCHANGE COMMISSION FORM 10-K FOR 1983: MARCH 26, 1984, 92 P.

  • Reserve-Resource

    WILLIAMS COMPANIES, 1985, SECURITIES AND EXCHANGE COMMISSION FORM 10-K FOR 1984: MARCH 27, 1985, 96 P.

  • Reserve-Resource

    WILLIAMS COMPANIES, 1985, SEC FORM 10-K, 1984, 03/27/85, P96

  • Deposit

    AGRICO CHEMICAL COMPANY, 1984, MEMORANDUM OF AGREEMENT BETWEEN AGRICO CHEMICAL COMPANY AND INTERNATIONAL CHEMICAL WORKERS UNION LOCAL NO. 33: MAY 18, 1984, 59 P.

  • Deposit

    WORKERS UNION LOCAL NO. 33: MAY 18, 1984, 59 P.

  • Deposit

    BRITISH SULPHUR CORPORATION LIMITED, 1980, WORLD SURVEY OF PHOSPHATE DEPOSITS, 4TH ED.: 238 P.

  • Deposit

    EARTH SCIENCES, INC., 1979, URANIFEROUS PHOSPHATE RESOURCES AND TECHNOLOGY AND ECONOMICS OF URANIUM RECOVERY FROM PHOSPHATE RESOURCES, UNITED STATES AND FREE WORLD: DEPT OF ENERGY CONTRACT GJBX-110(79) V. 2, JUNE 1979, 672 P.

  • Deposit

    HARBEN, PETER, 1981, FOUR CORNERS PHOSPHATE MINE - PROGRESS AND POTENTIAL: INDUSTRIAL MINERALS, NO. 164, MAY 1981, P. 61-67.

  • Deposit

    HAYNES, B. W., G. W. KRAMER, AND J. A. JOLLY, 1981, FLUORINE AND URANIUM IN PHOSPHATE ROCK PROCESSING AND WASTE MATERIALS: U.S. BUREAU OF MINES, RI 8576, 17 P.

  • Deposit

    LAWVER, J. E., J. P. BERNARDI, G. F. MCKEREGHAN, J. D. RAULERSON, D. LYNCH, AND R. S. HEARON, 1984, NEW TECHNIQUES IN BENEFICIATION OF THE FLORIDA PHOSPHATES OF THE FUTURE: MINERALS AND METALLURGICAL PROCESSING, V. 1, NO. 2, P. 89-106.

  • Deposit

    STOWASSER, W. F., 1983, PHOSPHATE ROCK, MINERAL COMMODITY PROFILE: U.S. BUREAU OF MINES, 18 P.

  • Deposit

    U.S. GEOLOGICAL SURVEY, 1970, THE NATIONAL ATLAS OF THE UNITED STATES OF AMERICA.

  • Deposit

    U.S. ENVIRONMENTAL PROTECTION AGENCY, 1981, DRAFT ENVIRONMENTAL IMPACT STATEMENT: MOBIL CHEM. CO., SOUTH FORT MEADE MINE, POLK COUNTY, FL, SEPT. 1981.

  • Deposit

    ENVIRONMENTAL IMPACT STATEMENT, SUPPLEMENTAL INFORMATION DOCUMENT: MOBIL CHEM. CO., SOUTH FORT MEADE MINE, POLK COUNTY, FL, SEPT. 1981.

  • Deposit

    WILLIAMS COMPANIES, 1984, THE WILLIAMS COMPANIES ANNUAL REPORT FOR 1983: FEBRUARY 14, 1984, 52 P.

  • Deposit

    WILLIAMS COMPANIES, 1985, THE WILLIAMS COMPANIES ANNUAL REPORT FOR 1984: FEBRUARY 11, 1985, 49 P.

  • Deposit

    World Mines Register, 1981-82, San Francisco

General comments

Subject category Comment text
Deposit DIMENSIONS ARE FOR AREA MINED @ 600 ACRES/YEAR
Deposit The MRDS Record Was Compiled For the International Strategic Minerals Inventory. The Data Were Used In Preparation of the USGS Circular 930 Series of Reports. Mineral Resource Categories and Codes Herein Are From the International Classification System Recomm

Reporter information

Type Date Name Affiliation Comment
Reporter 22-OCT-97 Buckingham, David A. U.S. Bureau of Mines
Reporter 04-NOV-02 Nicholson, S.W. U.S. Geological Survey Reformated date column; calculated latitude and longitude in decimal degrees; added Location Precision, Continent, Country, State, Commodity Code, Ore Minerals Code fields; changed Major Commodity field
Reporter 31-DEC-87 Saam, Henning, G. Bundesanstalt Fuer Geowissenschaften und Rohstoffee (Germany)
Updater 14-DEC-10 Causey, J. Douglas U.S. Geological Survey Combined info from MRDS record ISM0360 (Dep_ID 10024635) and deleted that record

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 10/03/2006
MSHA mine ID0800768
Mine name (MSHA)FORT GREEN
Current operatorMosaic Phosphates Company
Current controller (parent)Mosaic Company
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

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