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Cox No. 1 Feldspar and Kaolin Mine

Past Producer in Swain county in North Carolina, United States with commodities Feldspar, Kaolin
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10026051
MRDS ID K002508
Record type Site
Current site name Cox No. 1 Feldspar and Kaolin Mine
Related records 10297381

Geographic coordinates

Geographic coordinates: -83.46045, 35.44927 (WGS84)
Relative position 1,900 FEET N 52 E OF SHERRILL GAP

Site location context

Political divisions (FIPS codes)

Swain(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bryson City(quadrangle 1:24,000 scale)

Fontana Lake(quadrangle 1:100,000 scale)

Knoxville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tuckasegee(hydrologic unit)

Upper Tennessee(hydrologic accounting unit)

Upper Tennessee(hydrologic subregion)

Tennessee(hydrologic region)

Geographic areas

Country State County
United States North Carolina Swain

Commodities

Commodity Importance
Feldspar Primary
Kaolin Secondary

Comments on the commodity information

  • NO ESTIMATE OF THE FELDSPAR RESERVES CAN BE MADE UNTIL MORE EXPLORATION WORK IS DONE.

Materials information

Materials Type of material
Feldspar Ore
Kaolin Ore
Biotite Gangue
Fluorite Gangue
Garnet Gangue
Magnetite Gangue

Alteration

  • (Local) Feldspar Locally Altered To Kaolin

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Mpal Border Gneiss, Microcline Porphyroblasts In A Medium-To Coarse-Grained Matrix Of Biotite, Quartz, & Feldspar;Granite Gneiss, Fine-To Coarse-Grained, Leucocratic To Mesocratic Gneiss, Ranging From Granitic To Granodioritic;Prec Mpal 1050-320 M.Y.;Prec Mpal 1050-320 M.Y
    Rock description Mpal Border Gneiss, Microcline Porphyroblasts In A Medium-To Coarse-Grained Matrix Of Biotite, Quartz, & Feldspar;Granite Gneiss, Fine-To Coarse-Grained, Leucocratic To Mesocratic Gneiss, Ranging From Granitic To Granodioritic;Prec Mpal 1050-320 M.Y.;Pre
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Early Devonian
  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Ocoee Series, Quartz-Mica Schist & Feldspathic-Mica Quartzite
    Rock description Ocoee Series, Quartz-Mica Schist & Feldspathic-Mica Quartzite

Nearby scientific data

(1) -83.46045, 35.44927
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Principal Zone Of Pegmatites Trends Northeast; Most Pegmatites Strike Northeast, But Some Strike Northwest.

Ore body information

  • General form IRREGULAR, ELONGATE, LENS
    Strike N
    Dip STEEPLY W
    Plunge direction WESTWARD
    Thickness 30.48M
    Length 137.16M

Controls for ore emplacement

  • Fracture, Dilation Zone (Cameron, 1951)

Comments on the geologic information

  • THE PEGMATITE IS INTERSECTED BY A NUMBER OF SHEAR SURFACES, BUT DISPLACEMENT ALONG THESE SURFACES IS NEGLIGIBLE. SIX ZINES, CHARACTERIZED BY TEXTURAL CONTRASTS, ARE RECOGNIZABLE IN THE PEGMATITE. 1) AN OUTER BORDER ZONE CONSISTS OF PLAGIOCLASE, QUARTZ, SUBORDINATE PERTHITE, AND ACCESSORY MAGNETITE, BIOTITE, AND GARNET. 2) A WALL CONE CONSISTS OF SIMILAR MATERIAL AS BORDER ZONE, BUT COARSER TEXTURE, AND WITH A HIGHER MASSIVE PLAGIOCLASE CONTENT. 3) THE OUTER INTERMEDIATE ZONE IS COMPOSED OF VERY COARSE-GRAINED PLAGIOCLASE-QUARTZ-PERTHITE PEGMATITE WITH MINOR BIOTITE AND ACCESSORY MAGNETITE AND GARNET, AND LATE PYRITE. 4) THE MIDDLE INTERMEDIATE ZONE CONSISTS PREDOMINANTLY OF GRAPHIC INTERGROWTHS OF QUARTZ WITH PERTHITE AND PLAGIOCLASE. MINOR AMOUNTS OF MAGNETITE AND GARNET ARE PRESENT, ALONG WITH STRIPS AND CLUSTERS OF BIOTITE. 5) A QUARTZ-PERTHITE ZONE FORMS AN IRREGULAR ENVELOPE HANGING FROM 4 TO 25 FEET THICK, AROUND A 6) QUARTZ CORE. THE ZONES ARE GENERALLY GRADATIONAL WITH ONE
  • ANOTHER. MOST OF THE FELDSPAR PRODUCED CAME FROM THE PIPELIKE BODY IN THE CENTRAL PART OF THE MAIN WORKING.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Discovery year 1910
Year of first production 1910

Mining district

District name Bryson City Feldspar District

Ownership information

  • Type Operator
    Owner Blue Ridge Mining Co., Mr. M.H. Cox
  • Type Owner
    Owner S. D. Mckinney

Comments on the production information

  • MOST OF THE FELDSPAR PRODUCED WAS NO. 2 GRADE. PROD. YEARS: ABOUT 1910 , 1940 - 1949

Comments on the workings information

  • THE MAIN WORKING IS A ROUGHLY OVAL OPEN CUT 128 FEET LONG, 100 FEET MAXIMUM WIDTH, AND RANGING FROM 78 TO 138 FEET DEEP. OTHER WORKINGS INCLUDE PITS, OPEN CUTS, AND POSSIBLY SHAFTS.

Comments on development

  • MINE WAS INITIALLY WORKED FOR KAOLIN AROUND 1910. DURING 1940 TO 1948, THE BLUE RIDGE MINING COMPANY OPERATED THE MINE FOR FELDSPAR. MR. M.H. COX OPERATED THE MINE BETWEEN 1948 AND JUNE, 1949. ; ECON.COM: BIOTITE, MAGNETITE, AND GARNET MUST BE REMOVED BY HAND SORTING.

Reference information

Bibliographic references

  • Deposit

    CAMERON, E.N., 1951, FELDSPAR DEPOSITS OF THE BRYSON CITY DISTRICT, NORTH CAROLINA: NORTH CAROLINA DIV. MINERAL RESOURCES BULL. 62, 100 P

  • Deposit

    1951 OTHER CAMERON, E.N., N.C. BULL. 6

  • Production

    CAMERON, E.N., 1951, N.C. DIV. MIN. RES. BULL. 62

General comments

Subject category Comment text
Deposit THE PEGMATITE CUTS OBLIQUELY ACROSS THE BELT OF BORDER GNEISS, ITS NORTHERN END IS IN METASEDIMENTARY ROCKS AND ITS SOUTHERN END IS IN THE GRANITE GNEISS. METASEDIMENTARY ROCK-PEGMATITE CONTACTS ARE SHARP AT MOST PLACES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1974 Hale, Robin 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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