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Stephens Deposit

Prospect in McMinn county in Tennessee, United States with commodities Barium-Barite, Fluorine-Fluorite, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10275509
MAS/MILS ID 0471070054
Record type Site
Current site name Stephens Deposit

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -84.48322, 35.5162 (WGS84)
Elevation 329
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

McMinn(county)

Tennessee(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sweetwater(quadrangle 1:24,000 scale)

Watts Bar Lake(quadrangle 1:100,000 scale)

Chattanooga(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Hiwassee(hydrologic unit)

Middle Tennessee-Hiwassee(hydrologic accounting unit)

Middle Tennessee-Hiwassee(hydrologic subregion)

Tennessee(hydrologic region)

Geographic areas

Country State County
United States Tennessee McMinn

Commodities

Commodity Importance
Barium-Barite Critical Tertiary
Fluorine-Fluorite Critical Primary
Zinc Critical Secondary

Materials information

Materials Type of material
Barite Unknown
Calcite Unknown
Dolomite Unknown
Fluorite Unknown
Galena Unknown
Marcasite Unknown
Pyrite Unknown
Quartz Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) Holston Formation
ListMap

Economic information

Ore body information

  • Strike N90E
    Dip 06S
    Thickness 41M
    Area 200HA
    Depth to top 170M
    Field Value
    Type of Orebody #1 BRECCIA FILL
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 PIPELIKE
    Shape of Orebody #3 DOMELIKE
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Degree of Wallrock Alter. NONE
    Strike And Dip N90E:06S
    Minimum Depth to Top 0
    Total Surface Area (HA) 200
    Date of Last Modification 830201

Comments on the geologic information

  • THE DEFORMATION IN THE ORE ZONE IS SOLUTION COLLAPSE BRECCIA

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Both
Significant No
Discovery year 1973
Mining method Open Stope - Room and Pillar
Milling method Flotation

Mining district

District name Sweetwater District

Mineral rights holdings

Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner U.S. Borax And Chemical Corp.
    Interest 100
    Home office California
    Year 1980

Comments on the ownership information

  • U.S. BORAX LEASES LAND HOLDINGS THROUGH SUBSIDIARY U.S. FLOURSPAR.

Comments on the reserve resource information

  • THE ORE GRADE WAS PUBLISHED AS "... VARYING FROM 15% TO 35% CAF2." RESERVES ARE RECOVERABLE RES., CONVERTED TO IN-SITU FOR M1.
  • RC1=M1C1 M9C4=M1C1. (AFTER CONVERSION). BARITE GRADE HIGHLY VARIABLE; AVERAGE GRADE UNKNOWN. CONTRACTOR REPORTS RANGE IN BARITE GRADE TO BE 0-30%. RESERVES ARE IN-SITU RESERVES.

Workings at the site

  • Type of workings Underground
    Overall depth 196M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method ROOM AND PILLAR 10-34
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 2
    1st Condition of Workings FLOODED
    Capacity 2500
    Capacity Units MT ORE/DAY
    Unit Production Cost 8.17
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1980

Comments on the workings information

  • TOTAL LAND HOLDING IS 549 HECTARES.

Reference information

Bibliographic references

  • Deposit

    KYLE, J. R. BRECCIATION, ALTERATION, AND MINERALIZATION

  • Deposit

    IN THE CENTRAL TENNESSEE ZINC DISTRICT. ECON. GEOL.,

  • Deposit

    V. 71, 1976, PP. 892-903.

  • Deposit

    MAHER, S. W. BARITE RESOURCES IN TENNESSEE. TENN. DEPT.

  • Deposit

    CONSERV., DIV. GEOL. RI 28, 1970, 39 PP.

  • Deposit

    RENFRO, H. B., AND D. E. FERAY. GEOLOGICAL HIGHWAY MAP OF

  • Deposit

    THE MID ATLANTIC REGION. AAPG, 1970.

  • Deposit

    ZIMMERMAN, R. K., AND S. E. KESLER. FLUID INCLUSION

  • Deposit

    EVIDENCE FOR SOLUTION MIXING, SWEETWATER DISTRICT,

  • Deposit

    TENNESSEE. ECON. GEOL., V. 76, NO. 1, 1981, PP. 134-

  • Deposit

    142.

General comments

Subject category Comment text
Deposit INFORMATION BASED ON DATA PROVIDED BY UNIVERSITY OF MISSOURI UNDER FED. BUREAU OF MINES CONTRACT J0199158 WITH DAVID R. WILBURN AS TECHNICAL PROJECT OFFICER.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-APR-93 Wilburn, David R. 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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