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Mitchell Mine

Past Producer in Bedford county in Virginia, United States with commodities Feldspar, Tantalum, Niobium (Columbium), Sulfur-Pyrite
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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. Mining district
  14. Land status
  15. Ownership information
  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 10080105
MRDS ID W031181
Record type Site
Current site name Mitchell Mine
Alternate or previous names Hottinger Mine

Geographic coordinates

Geographic coordinates: -79.43865, 37.27173 (WGS84)
Elevation 213
Relative position 1.6 KM (1.0 MI) NORTHEAST OF OTTER HILL.

Site location context

Political divisions (FIPS codes)

Bedford(county)

Virginia(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Goode(quadrangle 1:24,000 scale)

Roanoke(quadrangle 1:100,000 scale)

Roanoke(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Roanoke(hydrologic unit)

Roanoke(hydrologic accounting unit)

Chowan-Roanoke(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States Virginia Bedford

Comments on the location information

  • ABOUT 70 M (230 FT) SOUTHEAST OF THE PATTERSON MINE AND 200 M (656 FT) SOUTHWEST OF THE INTERSECTION OF STATE ROADS 714 AND 715.

Commodities

Commodity Importance
Feldspar Primary
Tantalum Critical Secondary
Niobium (Columbium) Critical Secondary
Sulfur-Pyrite Secondary

Comments on the commodity information

  • NO. 1 AND NO. 2 FELDSPAR WAS PRODUCED.

Materials information

Materials Type of material
Plagioclase Ore
Pyrite Ore
Biotite Gangue
Garnet Gangue
Muscovite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Moneta Gneiss
    Rock description Moneta Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) Mafic Igneous Complex Undivided
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ne-Sw Trend
Type of structure Local
Structure description Faults

Ore body information

  • General form LINEAR
    Strike N 36 DEG E
    Dip 90-80 DEG SE
    Plunge direction SW
    Width 15M

Controls for ore emplacement

  • Pegmatite Dike

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1928
Discoverer Clinchfield Sand And Feldspar Co.
Year of first production 1928

Mining district

District name Moneta-Forest Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Clinchfield Sand And Feldspar Corp.
  • Type Owner
    Owner John E. Mitchell

Comments on the production information

  • THOUSANDS OF TONS OF GOOD SPAR HAVE BEEN RECOVERED FROM THIS QUARRY.

Workings at the site

  • Type of workings Surface
    Overall length 122.53M
    Overall width 15M

Comments on the workings information

  • WORKINGS CONSIST OF A PIT 134 M (440 FT) LONG, FROM 6 TO 15 M (20 TO 50 FT) WIDE, AND 46 M (150 FT) DEEP IN THE SOUTHWEST END.

Comments on development

  • MINE WAS OPENED IN 1928 BY CLINCHFIELD SAND AND FELDSPAR CORP. AND WORKED A NUMBER OF YEARS. IN 1938 THE MINE WAS UNDER LEASE BY THE SEABOARD FELDSPAR CORP., BALTIMORE, MARYLAND, AND WAS BEING OPERATED BY MR. RICE, BEDFORD, VA. IT WAS REOPENED IN 1949 BY CAROLINA MINERAL CO. AND WORKED ABOUT A YEAR. CLINCHFIELD AGAIN WORKED THE MINE FROM 1955 TO 1957, THEN ALLOWED IT TO REMAIN IDLE UNTIL 1959 WHEN ITS OPERATION WAS RENEWED. THE ORE WAS HAULED BY TRUCKS TO BEDFORD.

Reference information

Bibliographic references

  • Deposit

    BROWN, W.R., 1962, MICA AND FELDSPAR DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 3, 195 P.

  • Deposit

    DIETRICH, R.V., 1970, MINERALS OF VIRGINIA: VIRGINIA POLYTECHNIC INSTITUTE, RESEARCH DIVISION BULLETIN 47, 325 P.

  • Deposit

    GRIFFITTS, JAHNS, AND LEMKE, 1953, MICA DEPOSITS OF THE SOUTHEASTERN PIEDMONT, PART 4. OUTLYING DEPOSITS IN VIRGINIA, U.S. GEOLOGICAL SURVEY PROF. PAPER 248-C, PP. 171-202.

  • Deposit

    PEGAU, A.A., 1932, PEGMATITE DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 33, 123 P.

  • Deposit

    DEAR, P.S., MATHEWS, A.L., AND WHITTEMORE, J.W., 1938, AN INVESTIGATION OF SOME VIRGINIA FELDSPARS: VIRGINIA POLYTECHNIC INSTITUTE, ENGINEERING EXPERIMENT STATION SERIES, BULLETIN 35, 48 P.

  • Deposit

    1928 DIREXPL CLINCHFIELD SAND AND FELDSPAR CO.-MINED FELDSPAR

  • Deposit

    1949 DIREXPL CAROLINA MINERAL CO.-MINED FELDSPAR

  • Deposit

    1955 DIREXPL CLINCHFIELD SAND AND FELDSPAR CO.-MINED FELDSPAR

  • Production

    DEAR, ETAL, (1938)

General comments

Subject category Comment text
Deposit WALL ZONE PEGMATITE IS CHIEFLY PLAGIOCLASE, QUARTZ, AND MUSCOVITE, CUT BY NUMEROUS LARGE BLADES OF FRACTURE FILLING BIOTITE; BLOCKS OF PERTHITE AND FRACTURED CRYSTALS OF GARNET ARE LOCALLY PRESENT. LARGE PERTHITE-PLAGIOCLASE-QUARTZ INTERMEDIATE ZONES ARE PRESENT AND HAVE BEEN THE OBJECT OF MOST OF THE MINING. PERTHITE OCCURS IN BLOCKS UP TO 1.5 M (5 FT) LONG. NO CORE WAS OBSERVED BUT 1 M (3-FT) MASSES OF QUARTZ LIE IN THE DUMP.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1981 Trimble, David C. (Sweet, Palmer 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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