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Trail Ridge Operation

Producer in Clay county in Florida, United States with commodities Staurolite, Titanium, Zirconium
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10288842
MRDS ID ISM0601
MAS/MILS ID 0120190001
Record type Site
Current site name Trail Ridge Operation
Alternate or previous names Trail Ridge Mine, Du Pont Florida Plant, Du Pont Florida Mine and Plant
Related records 60000766

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -82.03125, 29.91274 (WGS84)
Elevation 65
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Clay(county)

Florida(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Starke(quadrangle 1:24,000 scale)

Gainesville(quadrangle 1:100,000 scale)

Gainesville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Fe(hydrologic unit)

Suwannee(hydrologic accounting unit)

Suwannee(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Federal lands

Army Installations(Branch)

Branch ARMY(Type of land area)

ARMY(Federal land areas administered by ARMY)

Geographic areas

Country State County
United States Florida Clay

Public Land Survey System information

Meridian Township Range Section Fraction State
Tallahassee 007 S 023 E 05 SW Florida

Commodities

Commodity Importance
Staurolite Primary
Titanium Critical Primary
Zirconium Critical Primary

Materials information

Materials Type of material
Ilmenite Unknown
Kyanite Unknown
Quartz Unknown
Rutile Unknown
Sillimanite Unknown
Staurolite Unknown
Tourmaline Unknown
Zircon Unknown

Nearby scientific data

Ore Body (1) Trail Ridge sands
ListMap

Economic information

Ore body information

  • Strike N00E
    Dip 00W
    Thickness 15M
    Length 14000M
    Width 2400M
    Area 4500HA
    Depth to top 0.2M
    Field Value
    Type of Orebody #1 PLACER
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin OTHER
    Secondary mode of Origin SEDIMENTATION
    Primary Ore Control OTHER
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N00E:00W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .2
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 4500
    Date of Last Modification 820614

Comments on the geologic information

  • THE DEPOSIT STRIKES NORTH-SOUTH AND IS RELATIVELY HORIZONTAL

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Both
Significant Yes
Discovery year 1946
Mining method Dredging
Year of first production 1949
Milling method Magnetic And Electrostatic

Mining district

District name Trail Ridge

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Fee Ownership

Land status

Ownership category Mixed

Ownership information

  • Type Owner-Operator
    Owner E. I Du Pont De Nemours And Co., Inc.
    ID 0800225
    Interest 100
    Home office Delaware
    Year 1981

Production statistics

  • Year 1971
    Description 65.30%Tio2 Conc. 89892 Annual Conc. Output (Mt)
  • Year 1972
    Description 66.60%Tio2 Conc. 80948 Annual Conc. Output (Mt)
  • Year 1973
    Description 66.00%Tio2 Conc. 78745 Annual Conc. Output (Mt)
  • Year 1974
    Description 61.39%Tio2 Conc. 80503 Annual Conc. Output (Mt)
  • Year 1975
    Description 66.00%Tio2 Conc. 77039 Annual Conc. Output (Mt)
  • Year 1976
    Description 66.00%Tio2 Conc. 75428 Annual Conc. Output (Mt)
  • Year 1977
    Description 67.80%Tio2 Conc. 90208 Annual Conc. Output (Mt)
  • Year 1978
    Description 68.00%Tio2 Conc. 95579 Annual Conc. Output (Mt)
  • Year 1979
    Description 71.00%Tio2 Conc. 85851 Annual Conc. Output (Mt)
  • Year 1980
    Description 68.43%Tio2 Conc. 97898 Annual Conc. Output (Mt)
  • Year 1981
    Description 69.70%Tio2 Conc. 68632 Mt Ilmenite Conc Produced
  • Year 1982
    Description 14288 Mt Zircon Produced
  • Year 1982
    Description 67.00%Tio2 Conc. 67010 Mt Ilmenite Conc Produced
  • Year 1983
    Description 17589 Mt Zircon Produced
  • Year 1983
    Description 68.00%Tio2 Conc. 64894 Mt Ilmenite Conc Produced
  • Year 1984
    Description 32482 Mt Zircon Produced
  • Year 1984
    Description 69.50%Tio2 Conc. 85228 Mt Ilmenite Conc Produced
  • Year 1985
    Description 24371 Mt Zircon Produced
  • Year 1985
    Description 70.50%Tio2 Conc. 90475 Mt Ilmenite Conc Produced
  • Year 1986
    Description 26705 Mt Zircon Produced
  • Year 1986
    Description 70.50%Tio2 Conc. 93687 Mt Ilmenite Conc Produced

Comments on the production information

  • PRODUCTION HAS BEEN CONVERTED FROM SHORT TONS TO METRIC TONS.

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Measured 82600000mt ore
    Demonstrated 82600000mt ore
    Total resources 82600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Titanium TiO2 1.7 wt-pct Titanium Major 1994
    Zirconium ZrO2 0.52 wt-pct Zirconium Major 1994
    Kyanite Staurolite 1 wt-pct Andalusite-Kyanite-Sillmanite 1994

Comments on the reserve resource information

  • MATRIX 1, COL1: ASSAY LINE 01 EQUALS COMMODITY 01, ILMENITE CONCENTRATE. ASSAY LINE 02 EQUALS COMMODITY 02, RESIDUE CONCENTRATE. ASSAY LINE 03 EQUALS COMMODITY 03, STAUROLITE CONCENTRATE. ASSAY LINE 04 EQUALS COMMODITY 04, ZIRCON CONCENTRATE. M2C1=M1C1-43,900,000 MATRIX 2, COL 1 = MATRIX 1, COL 1 - 43,900,000 THE JAN 1987 RESERVE ESTIMATE EQUALS THE JAN 1981 RESERVE ESTIMATE MINUS THE TOTAL 1981-1986 PRODUCTION. MINE REC = 95%, MILL REC = 84%, MILL FEED GRADE = IN SITU ORE GRADE MATRIX 4, COL1 = JAN 1994 RESERVES; BASED ON 10 YEAR MINE LIFE AND PRODUCTION LEVELS. TIO2 GRADE WT.AVG. FOR ILMENITE AND "RESIDUE" (RUTILE & LUECOXENE) CONTENT. ZIRCON GRADE FOR CONTAINED MINERAL. STAUROLITE ALSO RECOVERED WITH AN ORE GRADE OF 1.0% (NOV. 1994). MATRIX 9, COL4 = MATRIX 4, COL1.
  • ADIT UPDATE, JAN. 1993: RESERVES WERE ESTIMATED USING CAPACITY AND MINE LIFE. THE GRADE SHOWN IS AN AVERAGE AND INCLUDES ALL TITANIUM MINERALS. THE Q-MATRIX 3, COL 1 ALSO SHOWS THIS RESERVE FIGURE. DUPONT HAS ACQUIRED OVER 6000 HA IN THE ADJACENT CARLTON COUNTY, GA. AND WILL EVENTUAALLY DEVELOP THIS AREA.

Workings at the site

  • Type of workings Surface
    Area 4500HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method DREDGING
    Percent Waste Rock 0
    Avg. Overburden Thickness .2
    Primary Material Cover SAND, SILT
    Secondary Material Cover QUICKSAND
    Tertiary Material Cover HARDPAN
    Hardness of Ore SAND, SILT
    Capacity 20300
    Capacity Units MT ORE/DAY
    Unit Production Cost .44
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1981

Comments on the workings information

  • TOTAL LAND HOLDING IS 4500 HECTARES; 4000 HECTARES FALL IN CLAY COUNTY AND 500 HECTARES FALL IN BRADFORD COUNTY.

Reference information

Bibliographic references

  • Deposit

    CALVER, J.L. MINING AND MINERAL RESOURCES. FLORIDA GEOL.

  • Deposit

    SURVEY BULL. NO. 39, 1957, PP. 15-33.

  • Deposit

    CARPENTER, J.H., ET AL. MINING AND CONCENTRATION OF ILMEN-

  • Deposit

    ITE AND ASSOCIATED MINERALS AT TRAIL RIDGE, FLORIDA.

  • Deposit

    MIN. ENG., V. 5, AUGUST 1953, PP. 789-795.

  • Deposit

    CLARK, W.E., ET AL. INTERIM REPORT ON THE WATER RESOURCES

  • Deposit

    OF ALACHUA, BRADFORD, CLAY, AND UNION COUNTIES,

  • Deposit

    FLORIDA. FLORIDA GEOLOGICAL SURVEY INFORMATION CIRCULAR NO.

  • Deposit

    36, 1962, P. 62.

  • Deposit

    GROGAN, R.M., ET AL. MILLING AT DU PONT'S HEAVY MINERAL

  • Deposit

    MINES IN FLORIDA. MILLING METHODS IN THE AMERICAS. N.

  • Deposit

    ARBITAR, ED., GORDON AND BREACH, NEW YORK, 1964,

  • Deposit

    PP. 205-229.

  • Deposit

    ROBERTS, A.E. HOW NEW $3,000,000 HIGHLAND PLANT RECOVERS

  • Deposit

    TITANIFEROUS MINERALS. MIN. WORLD, OCTOBER 1955,

  • Deposit

    PP. 52-55, 72.

General comments

Subject category Comment text
Deposit PROPERTY UPDATED JAN 1988. THE PROPERTY WAS REVISITED APRIL 24, 1990. THE COMPANY WILL PROVIDE LIMITED GENERAL DATA. AFTER REVIEWING CURRENT (1990) OPERATING PRACTICES WITH THE 1982 PEFR, IT WAS DECIDED THAT THE PROPERTY DID NOT REQUIRE UPDATING. MAFO WAS CONTACTED AND AGREED. ESSENTIALLY ALL MINING AND MILLING PRACTICES ARE THE SAME. ONLY COSTS WOULD NEED UPDATING TO 1990 AND RESERVES ADJUSTED FOR PRODUCTION SINCE 1981. PROPERTY UPDATED IN NOV 1994 FOR SAMPLE SET PROJECT. THE MINE WAS VISITED IN JAN 1994 TO COLLECT INFORMATION FOR THIS EVALUATION. NO SPECIFIC COSTS GIVEN BUT ENOUGH TECHNICAL DATA WAS PROVIDED BY DU PONT TO MAKE COST ESTIMATES.

Reporter information

Type Date Name Affiliation Comment
Reporter 24-SEP-1996 Daw U.S. Bureau of Mines

Beyond USGS

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

Current status (per MSHA)

StatusActive since 12/31/1975
MSHA mine ID0800225
Mine name (MSHA)The Chemours Company FC LLC
Current operatorThe Chemours Company FC LLC
Current controller (parent)The Chemours 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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