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Henry Grindstaff No. 1 Mine

Past Producer in Yancey county in North Carolina, United States with commodity Mica
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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 10102301
MRDS ID K001921
Record type Site
Current site name Henry Grindstaff No. 1 Mine
Related records 10249015

Geographic coordinates

Geographic coordinates: -82.15902, 35.86176 (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

Comments on the commodity information

  • MUSCOVITE-GREENISH BROWN, CLAY STAINED, MOSTLY SCRAP

Materials information

Materials Type of material
Muscovite Ore
Epidote Gangue

Alteration

  • (Local) Weathered

Host and associated rocks

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

Nearby scientific data

(1) -82.15902, 35.86176
ListMap

Economic information

Geologic structures

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

Ore body information

  • General form TABULAR ()
    Thickness 15.24M

Comments on the geologic information

  • PLAGIOCLASE, QUARTZ, PERTHITE, MUSCOVITE PEGMATITE, GRAPHIC TEXTURE COMMON

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1942
Production years PRE 1942

Mining district

District name Spruce Pine District/Celo Area

Comments on the workings information

  • 4 ADITS, CUTS IN LINE 250 FEET

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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