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Millis Hill Mine

Past Producer in Guilford county in North Carolina, United States with commodities Gold, 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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10098195
MRDS ID K005071
Record type Site
Current site name Millis Hill Mine
Alternate or previous names Willis Hill Mine

Geographic coordinates

Geographic coordinates: -79.82755, 35.99703 (WGS84)
Relative position 5.8 MI SOUTH - SOUTHWEST OF GREENSBORO.

Site location context

Political divisions (FIPS codes)

Guilford(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pleasant Garden(quadrangle 1:24,000 scale)

Chapel Hill(quadrangle 1:100,000 scale)

Raleigh(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Deep(hydrologic unit)

Cape Fear(hydrologic accounting unit)

Cape Fear(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States North Carolina Guilford

Commodities

Commodity Importance
Gold Primary
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Covellite Ore
Gold Ore
Hematite Gangue
Limonite Gangue
Magnetite Gangue
Quartz Gangue
Siderite Gangue

Alteration

  • (Local) Carbonate, Chlorite, Sericite

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 Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -79.82755, 35.99703
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Shear Zones

Ore body information

  • General form TABULAR
    Length 800M

Controls for ore emplacement

  • Quartz Veins In Shear Zone

Comments on the geologic information

  • COUNTRY ROCK IS FOLIATED IN PLACES AND CONTAINS DISSEMINATED BORNITE (?), CHALCOCITE (?), CHALCOPYRITE, AND MAGNETITE, AT TIMES ALTERED TO HEMATITE. THERE IS LINEATION OF THE GRANITE WHICH COULD INDICATE SHEARING. SOME OF THE GRANITE THAT SHOWS DEFINITE LINEATION OF BIOTITE IS FINE GRAINED WITH SACCHARDIDAL QUARTZ AND FELDSPAR, INDICATING DEFORMATION AFTER COOLING. QUARTZ VEINS ARE SHEARED IN PLACES AND ARE HEALED WITH CHLORITE AND SERICITE. A SELVAGE OF QUARTZ, SERICITE, LIMONITE, AND HEMATITE AFTER CHLORITE IS PRESENT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1856
Year of first production 1856

Mining district

District name Guildford County Copper District

Comments on the workings information

  • TWO MAJOR GROUPS OF VEINS ARE PRESENT IN THE AREA OF THE FISHER HILL, MILLIS HILL AND PUCKET MINES. FOUR SHAFTS OF UNKNOWN DEPTH.

Comments on development

  • ORIGINALLY PART OF A MINING TRACT COMPRISING 900 ACRES

Reference information

Bibliographic references

  • Deposit

    CARPENTER, P. A., III, 1976, METALLIC MINERAL DEPOSITS OF THE CAROLINA SLATE BELT, NORTH CAROLINA: NORTH CAROLINA MINERAL RESOURCES SEC. BULL. 84, 166 P.

  • Deposit

    PARDEE, J. T., AND PARK, C. F., JR., 1948, GOLD DEPOSITS OF THE SOUTHERN PIEDMONT: U. S. GEOLOGICAL SURVEY PROF. PAPER 213, 156 P.

General comments

Subject category Comment text
Deposit SAME VEIN SYSTEM AS THE LARGER FISHER HILL. ORE BODIES ALONGuVEIN VARIED FROM 0.1 TO 3 M IN THICKNESS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Mcdaniel, Ronald D. North Carolina Division of Land Resources
Updater 01-JUN-1993 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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