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Hardwick Lead Mine

Past Producer in Bradley county in Tennessee, United States with commodities Lead, Zinc, Iron, Barium-Barite
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  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 10025771
MRDS ID K001714
Record type Site
Current site name Hardwick Lead Mine
Alternate or previous names Dollie D
Related records 10202297

Geographic coordinates

Geographic coordinates: -84.91104, 35.10039 (WGS84)
Relative position NORTHWEST SLOPE OF LEADMINE RIDGE, 1 MILE SOUTHEAST OF BLACK FOX.

Site location context

Political divisions (FIPS codes)

Bradley(county)

Tennessee(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McDonald(quadrangle 1:24,000 scale)

Cleveland(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 Bradley

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary
Iron Tertiary
Barium-Barite Critical Tertiary

Comments on the commodity information

  • OXIDE MINERALS WERE MINED INITIALLY, PRIOR TO UNDERGROUND MINING OF SULFIDE MINERALS.

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Chert Gangue

Analytical data

Result ACCORDING TO SECRIST (1924), THE ORE CONTAINS "...ABOUT 6 PER CENT. GALENA, 3.5 PER CENT. ZINC AND 3 PER CENT. LIME CARBONATE, 2 PER CENT. IRON, 5 PER CENT. HEAVY SPAR, DIFFERENCE GANGUE, MAGNESIAN LIME (DOLOMITE), ETC...."

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Maynardville Limestone Member Of Conasauga Shale
    Rock description Maynardville Limestone Member Of Conasauga Shale
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -84.91104, 35.10039
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Northeast-Trending Strike Belts
Type of structure Local
Structure description Outcrops Of Conasauga Shale In Lead Mine Valley Along The Northeast Show Complex Folding And Some Faulting.

Ore body information

  • General form INVERTED FUNNEL (15TH ANN. REPT., 1905)

Controls for ore emplacement

  • Bedding, Breccia Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Significant No
Discovery year 1892
Discoverer Sam Devine
Year of first production 1892
Production years 1892-1906

Ownership information

  • Type Operator
    Owner Southern Lead Co.

Comments on the production information

  • SECRIST QUOTES THE FIFTEENTH ANNUAL REPORT, MINING DEPARTMENT, STATE OF TENNESSEE, 1905, (P. 216 - 218) AS STATING THAT THE PRODUCTION OF ORE WAS VALUED AT $120,000.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 64.01M

Comments on the workings information

  • TWO SHAFTS (210 AND 135 FOOT DEPTHS) WERE CAVED AT THE TIME OF SECRIST'S INVESTIGATION. A THIRD SHAFT IS SHOWN ON DUNLAP'S MAP, AND MAY BE THE OPENING DESCRIBED AS DRIFT NO. 3 BY SECRIST, WHICH EXTENDS MORE THAN 180 FEET.

Comments on development

  • MINE ABANDONED IN 1906 (SECRIST). PROPERTY DRILLED BY AMERICAN ZINC COMPANY AND THE TENNESSEE COPPER COMPANY DURING 1925, BY THE ST. LOUIS SMELTING AND REFINING COMPANY DURING 1925-26, AND BY THE NEW JERSEY ZINC CO. IN 1946. ; ECON.COM: LACK OF CONTINUING INTEREST ON PART OF MINING COMPANIES THAT HAVE DRILLED THE PROPERTY SUGGESTS THAT DEPOSIT IS UNECONOMIC.

Reference information

Bibliographic references

  • Deposit

    SECRIST, M.H., 1924, ZINC DEPOSITS OF EAST TENNESSEE: TENN. DIV. GEOL., BULL. 31, 165 P.

  • Deposit

    MAHER, S.W., 1958, THE ZINC INDUSTRY OF TENNESSEE: TENN. DIV. GEOL., INF. CIR. NO. 6, 28 P.

  • Deposit

    SWINGLE, G.D., 1959, GEOLOGY, MINERAL RESOURCES, AND GROUND WATER OF THE CLEVELAND AREA, TENNESSEE: TENN. DIV. GEOLOGY BULL. 61, 125 P.

  • Deposit

    DUNLAP, J.C., 1946, GEOLOGY OF THE HARDWICK MINE AREA, BRADLEY COUNTY, TENNESSEE: U.S. GEOLOGICAL SURVEY STRATEGIC MINERALS INVENTORY PRELIMINARY REPORT AND MAP 3-215, 4 P.

  • Deposit

    STATE OF TENNESSEE MINING DEPARTMENT, 1905, FIFTEENTH ANNUAL REPORT: STATE OF TENNESSEE MINING DEPARTMENT, P. 216-218.

  • Deposit

    TENNESSEE VALLEY AUTHORITY, 1966, GEOCHEMICAL STUDY OF THE MAYNARDVILLE LIMESTONE IN THE VICINITY OF THE HARDWICK MINE, BRADLEY COUNTY, TENNESSEE: TENNESSEE VALLEY AUTHORITY OPEN-FILE REPORT, 13 P.

  • Deposit

    1924 COMPILE SECRIST, M.H., TENN. DIV. GEOL., BULL.

  • Deposit

    1958 COMPILE MAHER, S.W., TENN. DIV. GEOL., INF. CIR.

  • Deposit

    1959 GEOLMAP SWINGLE, G.D., TENN. DIV. GEOL., BULL.

  • Production

    SECRIST, M.H., 1924, TENN. DIV. GEOL. BULL. 31.

General comments

Subject category Comment text
Deposit SPHALERITE LOCALLY REPLACES GANGUE DOLOMITE AND CHERT. SPHALERITE EXHIBITS CONCENTRIC ZONAL COLORATION, WITH LIGHTER-COLORED MATERIAL NEAR THE CENTER. PYRITE OCCURS THROUGHOUT THE DOLOMITE AS SMALL CRYSTALS AND GRAINS, BUT VERY LITTLE OCCURS WITHIN THE SPHALERITE. SWINGLE (1959) STATES THAT MINERALIZED MATERIAL WAS SEEN ONLY IN THE DUMPS, AND ALSO NOTES THE PRESENCE OF BARITE AND GANGUE CALCITE. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1973 Hale, Robin C. U.S. Geological Survey

Beyond USGS

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

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