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Cochran Feldspar Prospect

Occurrence in Swain county in North Carolina, United States with commodity Feldspar
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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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10026058
MRDS ID K002516
Record type Site
Current site name Cochran Feldspar Prospect
Related records 10223634

Geographic coordinates

Geographic coordinates: -83.46739, 35.44316 (WGS84)
Relative position 1,300 FEET SOUTHWEST 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 Tertiary

Comments on the commodity information

  • IF ANY FELDSPAR WAS PRODUCED, IT WAS PROBABLY NO MORE THAN A FEW TONS.

Materials information

Materials Type of material
Feldspar Ore
Biotite Gangue
Garnet Gangue
Muscovite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Early Devonian
    Stratigraphic age (youngest) Early Devonian
  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Mpal Border Gneiss, Microcline Porphyroblasts In 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 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
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -83.46739, 35.44316
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 IRREGULARLY TABULAR
    Strike N 51 W
    Dip 68 S
    Thickness 5.49M

Controls for ore emplacement

  • Fracture, Dilation Zone (Cameron, 1951)

Comments on the geologic information

  • THE PEGMATITE CONSISTS OF 1) FINE-GRAINED PLAGIOCLASE, QUARTZ, AND PERTHITE BORDER ZONE; 2) A POORLY DEFINED WALL ZONE OF MEDIUM- TO COARSE-GRAINED PLAGIOCLASE QUARTZ-PERTHITE PEGMATITE WITH SCATTERED BIOTITE; 3) AN INTERMEDIATE ZONE OF MEDIUM- TO COARSE- GRAINED PLAGIOCLASE, QUARTZ, AND PERTHITE WITH MINOR MUSCOVITE AND ACCESSORY BIOTITE AND GARNET; AND 4) A DISCONTINUOUS CORE OF 3 PODLIKE SEGMENTS OF COARSE TO VERY COARSE GRAINED, MASSIVE PERTHITE AND KAOLINIZED PLAGIOCLASE WITH INTERSTITIAL MASSIVE QUARTZ. THE PODS RANGE FROM 1 TO 3 FEET IN THICKNESS AND 7 TO 20 FEET LONG.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No
Discovery year 1942
Discoverer Oscar Pittman

Mining district

District name Bryson City Feldspar District

Ownership information

  • Type Operator
    Owner Oscar Pittman

Comments on the production information

  • IF ANY FELDSPAR WAS PRODUCED, NO RECORD IS AVAILABLE.

Comments on the workings information

  • THE MAIN WORKING IS A 21-FOOT OPEN CUT LEADING TO A 44-FOOT LONG ADIT, WITH RELATED DRIFTS AND CHAMBERS. FOUR OTHER SMALL CUTS, A SHALLOW STOPE, AND 4-FOOT ADIT COMPRISE THE OTHER WORKINGS.

Comments on development

  • ECON.COM: MOST OF FELDSPAR IS SO INTERGROWN WITH QUARTZ THAT RECOVERY OF NO. 2 GRADE BY HANDSORTING WOULD BE COSTLY.

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 CONTACTS OF THE PEGMATITE AND BORDER GNEISS ARE SHARP. ANGULAR IRREGULARITIES ALONG THE PEGMATITE BORDER ARE CONTROLLED BY FRACTURES.
Deposit Discovery Year: EARLY 1940'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-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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