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Thompson Mine

Past Producer in Stanly county in North Carolina, United States with commodity Gold
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10089702
MRDS ID W028435
Record type Site
Current site name Thompson Mine

Geographic coordinates

Geographic coordinates: -80.11228, 35.3401 (WGS84)
Elevation 158
Relative position 7.75 KM SLIGHTLY SOUTH OF DUE EAST OF ALBEMARLE

Site location context

Political divisions (FIPS codes)

Stanly(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Morrow Mountain(quadrangle 1:24,000 scale)

Charlotte(quadrangle 1:100,000 scale)

Charlotte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Pee Dee(hydrologic unit)

Upper Pee Dee(hydrologic accounting unit)

Pee Dee(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States North Carolina Stanly

Comments on the location information

  • ON EAST VALLEY SLOPE OF FLAT SWAMP CREEK
  • DIGITIZED ON STROMQUIST AND HENDERSON (1985) FROM LOCATION OF CARPENTER, 1976

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • NATIVE GOLD PROBABLY IN QUARTZ VEIN
  • SMALL GOLD MINE IN PYRITIC SILICIFIED ZONE

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Actinolite Gangue
Chlorite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Silicic, Chloritic, Mg-Enrichment (Actinolite, Talc (?))

Analytical data

Result IN 1931-1933 ASSAYS OF DRILL CORE RANGED FROM 0.01 TO 0.03 OPT GOLD. HIGHEST GRADE OF CORE WAS 1.73 OUNCES FOR A 2M LENGTH.

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Cid Formation
    Rock description Cid Formation
    Stratigraphic age (youngest) Early Cambrian
    Stratigraphic age (youngest) Early Cambrian
    Stratigraphic age (youngest) Early Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Rock unit name Cid Formation
    Rock description Cid Formation

Nearby scientific data

(1) -80.11228, 35.3401
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ne-Trending Broad Folds
Type of structure Local
Structure description Ne-Trending Fault

Ore body information

  • General form IRREGULAR
    Strike N 65 E
    Dip 25 TO 55 NW
    Thickness 12M
    Length 30M

Controls for ore emplacement

  • Disseminated Sulfide Is Ne-Trending Fault Zone

Comments on the geologic information

  • IRREGULAR, DISSEMINATED SULFIDE ZONE IN ARGILLITE. MAGNESIUM-ALTEREDu(TREMOLITE-ACTINOLITE, TALC) BASALTS (HYALOCLASTIC TUFFS AND BRECCIAS) SEEN TO CONTAIN COARSE VISIBLE GOLD.
  • GABBRO OS GREE-GRAY, EQUIGRANULAR, MEDIUM-GRAINED. PROSPECT AT THE CONTACTuBETWEEN SLATES AND GABBRO DIKE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1890
Year of last production 1933

Mining district

District name Albemarle Area

Land status

Ownership category Private

Production statistics

  • Year 1933
    Period 1931-1933
    Material AU
    Accuracy Estimate
    Description Cp_Grade: ^0.05 To 0.26 Opt Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 4g/mt

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 17M
    Overall length 27.43M
    Overall width 12M

Comments on the workings information

  • INFORMATION LACKING; PROBABLY MINOR SURFACE TRENCHES AND PITS
  • SHAFT REPORTED TO BE 33 FEET BELOW THE FLOOR OF THE PIT (25 FEET); BEFORE 1906 MINE HAD OPEN CUT 9M TO 12M WIDE, 30M LONG AND 7.5M DEEP; WORKED AGAIN IN 1931 TO 1933

Comments on development

  • THE MINE WAS FIRST WORKED PRIOR IN THE 189'S. IT WAS WORKED AGAIN FROM 1931 TO 1933, DURING THIS TIME, A DIAMOND DRILLING PROGRAM WAS CARRIED OUT; FROM 1931 TO 1933 FOURTEEN CORE HOLES WERE DRILLED. SEVERAL DIAMOND DRILL HOLES WERE COMPLETED DURING A SAMPLING PROGRAM IN THE LATE 1980'S BY NICOR CORPORATION.

Reference information

Bibliographic references

  • Analytical Data

    CARPENTER, 1976

  • Deposit

    CARPENTER, III, P.A., 1976, METALLIC MINERAL DEPOSITS OF THE CAROLINA SLATE BELT, NORTH CAROLINA, NORTH CAROLINA NAT. AND ECON. RES., MIN. RES. SECT., BULL. 84, TEXT 166 P. MINE TEXT P. 137, MAP AT 1:145,000.

  • Deposit

    MINE IN ALBEMARLE TOPO QUAD AT 1:62,500.

  • Deposit

    1976 COMPILE CARPENTER, N.C. STATE, MINE

  • Production

    PARDEE AND PARK, 1948

General comments

Subject category Comment text
Deposit INFORMATION LACKING
Deposit MINERALIZED ZONE ARE BLEACHED AND SILICIFIED AND CONTAIN AURIFEROUS PYRITE ANDuPYRRHOTITE. THE MAGNESIAN ALTERATION IS TYPICAL OF THATuASSOCIATED WITH ALTERATION PIPES BELOW MASSIVE SULFIDE DEPOSITS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1976 D'Agostino, John P. U.S. Geological Survey
Reporter 01-DEC-1976 Mcdaniel, Ronald D. North Carolina Division of Land Resources
Updater 01-JUN-1992 Klein, T.L. U.S. Geological Survey

Beyond USGS

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

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