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Carolina Mineral Co. No. 20 Mine

Past Producer in Yancey county in North Carolina, United States with commodities Mica, 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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10102315
MRDS ID K001982
Record type Site
Current site name Carolina Mineral Co. No. 20 Mine
Related records 10199552

Geographic coordinates

Geographic coordinates: -82.15541, 35.85509 (WGS84)

Site location context

Political divisions (FIPS codes)

Yancey(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Celo(quadrangle 1:24,000 scale)

Asheville(quadrangle 1:100,000 scale)

Knoxville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nolichucky(hydrologic unit)

French Broad-Holston(hydrologic accounting unit)

Upper Tennessee(hydrologic subregion)

Tennessee(hydrologic region)

Geographic areas

Country State County
United States North Carolina Yancey

Comments on the location information

  • LOCATION FROM PLATE 3, USGS PROF. PAPER 577. SCALE 1:62,500

Commodities

Commodity Importance
Mica Primary
Feldspar Primary

Comments on the commodity information

  • MUSCOVITE-BROWNISH GREEN, TIED, CRACKED, BENT, CONCENTRATED IN WALL AND INTERMEDIATE ZONES; GREEN, WEDGE "A" STRUCTURE CONCENTRATED NEAR CORE.

Materials information

Materials Type of material
Feldspar Ore
Muscovite Ore
Allanite Gangue
Hyalite Gangue
Sericite Gangue
Siderite Gangue
Zoisite Gangue

Alteration

  • (Local) Weathered (10 Feet)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -82.15541, 35.85509
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Pegmatite Is Partly Concordant With The Foliation Of The Enclosing Country Rock

Ore body information

  • General form IRREGULAR, TABULAR
    Strike NE
    Dip SE
    Plunge S
    Thickness 30.48M
    Length 182.88M

Comments on the geologic information

  • PLAGIOCLASE, QUARTZ, PERTHITE BORDER ZONE, FINE GRAINED; PERTHITE, QUARTZ, PLAGIOCLASE, MUSCOVITE WALL ZONE, FINE TO COARSE GRAINED PERTHITE, QUARTZ, PLAGIOCLASE, MUSCOVITE INTERMEDIATE ZONE, COARSE GRAINED; QUARTZ, PERTHITE CORE OR FRACTURE FILLINGS. CONTAINS GNEISS SEPTA.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1915
Production years 1915, 1922, 1936, 1942

Mining district

District name Spruce Pine District/Crabtree Creek Area

Comments on the production information

  • PRODUCTION GREATER THAN 10000 LB. SHEET MICA.

Comments on the workings information

  • CUT 580 FEET LONG, 20-110 FEET DEEP.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit DATA ABSTRACTED FROM USGS PROF. PAPER 577.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Fagan, James M. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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