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Furniss Mine

Past Producer in Cabarrus county in North Carolina, United States with commodities Gold, Tungsten, Copper
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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. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10026455
MRDS ID K005093
Record type Site
Current site name Furniss Mine
Alternate or previous names Furness, Firness

Geographic coordinates

Geographic coordinates: -80.49341, 35.35288 (WGS84)
Relative position 6.3 MILES SOUTHEAST OF CONCORD. 4.6 MILES SOUTHWEST OF MT. PLEASANT.

Site location context

Political divisions (FIPS codes)

Cabarrus(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Locust(quadrangle 1:24,000 scale)

Charlotte(quadrangle 1:100,000 scale)

Charlotte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rocky(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 Cabarrus

Comments on the location information

  • DIGITIZED FROM STROMQUIST AND HENDERSON, 1985

Commodities

Commodity Importance
Gold Primary
Tungsten Critical Tertiary
Copper Tertiary

Comments on the commodity information

  • GOLD OCCURRS AS FREE GOLD AND IN PYRITE QUARTZ VEINS ENCLOSED BY IRON-STAINED ANDESITIC TUFF; NUMEROUS EPIDOTE STRINGERS CROSS-CUT THE ANDESITE; CALCITE, SIDERITE, CHALCOPYRITE AND PYRITE ARE IN BOTH COUNTRY ROCK AND QUARTZ; MALACHITE COATS ROCKS/SURFACES AND OCCASIONALLY ENCLOSES CHALCOCITE; MAGNETITE OCCURS WITH PYRITE IN THE ANDESITE; SOME GALENA IN CALCITE; SCHEELITE DISSEMINATED THROUGH QUARTZ; QUARTZ VEIN STRIKES N 60 DEGREES E AND DIPS 80 DEGREES NW; ORE IN QUARTZ IN LENSES, POCKETS AND VEINLETS; GOLD NATIVE AND IN PYRITE; MAIN SHAFT ABOUT 59M DEEP WITH SEVERAL DRIFTS; ANOTHER SHAFT THE FURR SHAFT 20M DEEP LOCATED SW OF FURNISS SHAFT; MINE WORKED PRIOR TO 1860, LAST WORKED BETWEEN 1900 TO 1906, PROSPECTED EARLY 1930'S; IN 1948 BECAUSE SCHEELITE DISCOVERED ON DUMP, U.S. BUREAU OF MINES DRILLED EIGHT HOLES AND EXAMINED UNDERGROUND WORKINGS; IN 1949 BUREAU OF MINES DRILLED FOUR MORE HOLES; NO SCHEELITE DISCOVERED AT DEPTH; IN 1970 FURNISS SHAFT ABOUT 8M IN DIAMETER CHOKED TO
  • WITHIN 7M OF SURFACE; NUMEROUS TRENCHES AND PITS

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Malachite Ore
Pyrite Ore
Scheelite Ore
Barite Gangue
Calcite Gangue
Epidote Gangue
Hematite Gangue
Quartz Gangue
Siderite Gangue

Alteration

  • (Local) Chlorite, Epidote, Carbonate

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

(1) -80.49341, 35.35288
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Nw-Trending Shear Zones

Ore body information

  • General form PODS, LENSES
    Strike N 60 DEG E
    Dip 80 DEG NW
    Thickness 1M
    Length 30M
    Depth to bottom 52M

Controls for ore emplacement

  • Quartz Veins

Comments on the geologic information

  • THREE FOOT QUARTZ VEIN WAS DISCOVERED CONTAINING 5% SULFIDE MINERALS IN 1931uDURING EXPLORATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1860
Year of first production 1861

Mining district

District name Concord Area

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 52M
    Overall length 27.43M

Comments on the workings information

  • DEPOSIT WAS MINED VIA TWO SHAFTS AND SEVERAL PITS AND TRENCHES. SEVERAL DRIFTS WERE MINED FROM DEEPEST SHAFT. DRIFTS ARE AT THE 27, 30M, AND 52 M LEVEL.

Comments on development

  • MINE WAS LAST WORKED BETWEEN 1900 AND 1906. SOME PROSPECTING CARRIED OUT IN EARLY 1930'S. TWELVE HOLES DRILLED BY U.S. BUREAU OF MINES IN 1948 AND 1949. WORK WAS CARRIED OUT AFTER SCHEELITE WAS DISCOVERED ON DUMPS. INVESTIGATION REVEALED NO WORKABLE DEPOSIT OF SCHEELITE AND NO SCHEELITE WAS FOUND AT DEPTH. MAIN SHAFT IN 1970 WAS FILLED WITH WATER. NUMEROUS TRENCHES AND PITS WERE OVERGROWN WITH VEGETATION.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit CONTINUATION OF THE PHOENIX VEIN AND THE COPPER VEIN (SEE PHOENIX MINE, K005078). ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV; 4 , USGS FIELD NOTES.
Deposit SEE PHOENIX MINE K005078
Deposit THE PRESENCE OF THE MASSIVE COPPER SULFIDE "VEIN" IMMEDIATELY TO THE SOUTHEAST,uTHE UBIQUITOUS PRESENCE OF BARITE, SUGGEST THE POSSIBLE PRESENCEuOF SYNGENETIC MASSIVE SULFIDE DEPOSITS. EPIGENETIC AU-W-CUuVEINS MAY BE THE RESULT OF SECOND GENERATION PROCESSES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 D'Agostino, John P. U.S. Geological Survey
Updater 01-JUN-1991 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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