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Rudisil Mine

Past Producer in Mecklenburg county in North Carolina, United States with commodities Gold, Silver, 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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  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 10079128
MRDS ID W028045
Record type Site
Current site name Rudisil Mine

Geographic coordinates

Geographic coordinates: -80.86842, 35.20261 (WGS84)
Elevation 221
Relative position 2.5 KM SW OF YWCA IN DOWNTOWN CHARLOTTE; SMALL POND SELECTED AS COLLAPSED MINE STOPE

Site location context

Political divisions (FIPS codes)

Mecklenburg(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Charlotte East(quadrangle 1:24,000 scale)

Charlotte(quadrangle 1:100,000 scale)

Charlotte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Catawba(hydrologic unit)

Santee(hydrologic accounting unit)

Edisto-Santee(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States North Carolina Mecklenburg

Comments on the location information

  • WORKING WEST SIDE OF RAILROAD TRACKS IN URBAN AREA

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary

Comments on the commodity information

  • MODERATE SIZE GOLD - COPPER MINE IN QUARTZ VEINS

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Quartz Gangue
Sericite Gangue
Siderite Gangue

Alteration

  • (Local) Silicic, Carbonate, Sericitic

Analytical data

Result ASSAYS OF DISSEMINATED PYRITE IN GANGUE 0.3 OPT AU, TRACE AG
Result 0.45 OPT AU, 1.9 OPT AG
Result 0.6 OPT AU, TRACE AG
Result 1 OPT AU, 0.1 OPT AG
Result FIRST CLASS ORE ASSAYED 2.2 OPT AU, TRACE AG
Result 3.5 OPT AU, TRACE AG. SECOND CLASS ORE ASSAYED 1.2 OPT AU, TRACE AG
Result 1.4 OPT AU, TRACE AG
Result 1.5 OPT AU, 0.14 OPT AG
Result 1.7 OPT AU, 0.5 OPT AG
Result 1.7 OPT AU, 0.74 OPT AG.

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 Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -80.86842, 35.20261
ListMap

Economic information

Ore body information

  • General form LENSES AND PODS
    Strike N 30 E
    Dip 45 NW
    Thickness 30M
    Length 180M
    Width 30M
    Depth to bottom 107M

Controls for ore emplacement

  • Quartz Veins Along The Contact Between Slate Screen And Granite. Gabbro Is Present On The Opposite Side Of The Screen.

Comments on the geologic information

  • MOST MINING NEAR SURFACE OF BROWN ORE. BELOW THE WATER TABLE QUARTZ CONTAINS AURIFEROUS PYRITE WITH A LITTLE CHALCOPYRITE, IRON CARBONATEuCOMMON. THE SERICITIC, HIGHLY SCHISTOSE LAYER BETWEEN THE GRANITE AND THEuGABBRO MAY BE AS MUCH AS 30 M WIDE. THE ORE SHOOTS ARE CROSSCUT BY MESOZOICu(?) DIABASE DIKES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1829
Year of first production 1830
Year of last production 1908
Production years 1830-1833 1837-1860 1880-1887 1905-1908

Mining district

District name Charlotte District

Land status

Ownership category Private

Production statistics

  • Year 1908
    Period 1837-1908
    Material AU
    Accuracy Estimate
    Description Cp_Grade: ^1 Opt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 28g/mt

Comments on the production information

  • MUCH HIGH-GRADE GOLD ORE PRODUCED. GRADE IS INFERRED FROM NITZE AND HANNA 1896, SECOND CLASS ORE.

Workings at the site

  • Type of workings Underground
    Length 685M
    Overall depth 105M
    Overall length 196.6M

Comments on the workings information

  • 3 SHAFTS, TWO 72 M DEEP AND THE PUMP SHAFT 58 M VERTICAL AND 58 M INCLINED TO 105 M LEVEL; MUCH MINING TO 90 M; QUARTZ VEIN NOT FOUND AT THE 105 M LEVEL.

Comments on development

  • RUDISIL MINE IS ABOUT 0.8 KM SOUTHWEST OF THE ST. CATHERINE MINE, ON THE SAME VEIN.

Reference information

Bibliographic references

  • Analytical Data

    NITZE, 1896 ; FIVE GROUPS OF ASSAYS WITH GOLD AT $20.67 PER OUNCE AND SILVER AT $1.29 PER OUNCE PER TON ORE ; SRC.REF: NITZE AND HANNA, 1896

  • Deposit

    NITZE, H. B. C., AND HANNA, G. B., 1896 , GOLD DEPOSITS OF NORTH CAROLINA, NORTH CAROLINA GEOLOGICAL SURVEY BULL. NO. 3 , TEXT 200 P., MINE TEXT P. 126 - 129 , LOCATED ON MAP OF GOLD DEPOSITS AT 1:1,600,000

  • Deposit

    MINE IN CHARLOTTE EAST TOPO QUAD AT 1:24,000

  • Deposit

    EMMONS, E., 1856 , MIDLAND COUNTIES OF NORTH CAROLINA, NORTH CAROLINA GEOLOGICAL SURVEY, TEXT 351 P., MINE TEXT P. 175 - 177; PARDEE, J.T. AND PARK, C.F., 1948, GOLD DEPOSITS OF THE SOUTHERN PIEDMONT: USGS PROFESSIONAL PAPER 213.

  • Deposit

    1856 COMPILE EMMONS, N.C. STATE, MINES

  • Deposit

    1896 COMPILE NITZE, N.C. STATE, MINES

  • Production

    PARDEE AND PARK, 1948, P. 78

General comments

Subject category Comment text
Deposit PARALLEL ORE BODIES, EACH 0.6 TO 5 M THICK, IN SHEARED SLATE. AT DEPTH OF 60 M MAJOR BORDER VEINS APPEAR TOuCONVERGE. PODS AND RICH SHOOTS WERE COMMON. ORE IS FOUND INuEITHER GRANITE OR SCHIST OR BOTH. STRINGER ORE OVER A WIDTH OF 3 M IS COMMON INuSCHIST REMOTE FROM GRANITE CONTACT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1977 D'Agostino, John P. U.S. Geological Survey
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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