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Ledford Allanite Prospect

Occurrence in Madison county in North Carolina, United States with commodities REE, Thorium
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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. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10095000
MRDS ID K003515
Record type Site
Current site name Ledford Allanite Prospect

Geographic coordinates

Geographic coordinates: -82.94209, 35.7876 (WGS84)
Elevation 1103
Relative position 0.1 MILE SOUTH OF CEMETERY SOUTH OF POPLAR GAP SCHOOL.

Site location context

Political divisions (FIPS codes)

Madison(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lemon Gap(quadrangle 1:24,000 scale)

Asheville(quadrangle 1:100,000 scale)

Knoxville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper French Broad(hydrologic unit)

French Broad-Holston(hydrologic accounting unit)

Upper Tennessee(hydrologic subregion)

Tennessee(hydrologic region)

Federal lands

Pisgah National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Croatan National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

National Forests in North Carolina(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States North Carolina Madison

Commodities

Commodity Importance
REE Critical Primary
Thorium Primary

Materials information

Materials Type of material
Allanite Ore
Euxenite Ore
Epidote Gangue
Feldspar Gangue
Magnetite Gangue
Quartz Gangue

Analytical data

Result SPECTROGRAPHIC ANALYSIS BY THE COLORADO ASSAYING COMPANY, OF MATERIAL CONSISTING OF FELDSPAR, QUARTZ, MICA SCHIST, AND MINOR POLYCRASE CONTAINED: 0.05 - 0.1% U, 1.0% Y, 1 - 2% TH, AND VALUES OF 0.1% OR LESS OF ER, GA, GD, LA, LU, RB, SM, AND YB. VALUES ARE APPROXIMATE.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Pegmatites;Max Patch Granite; Porphyritic, Locally Coarse-Grained And Red (Due To Predominance Of Red Or Pink Feldspars). The Reddish Phase Of The Max Patch Granite Is Commonly Altered To The Extent That As Much As One-Half The Rock Consists Of Epidote, Which Also Occurs As Blebs And Veins In The Rock
    Rock description Pegmatites;Max Patch Granite; Porphyritic, Locally Coarse-Grained And Red (Due To Predominance Of Red Or Pink Feldspars). The Reddish Phase Of The Max Patch Granite Is Commonly Altered To The Extent That As Much As One-Half The Rock Consists Of Epidote,
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -82.94209, 35.7876
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description About One Mile To The Northwest, The Meadow Creek Fault Strikes Northeastward.

Ore body information

  • General form PINCH AND SWELL
    Strike N 75 E
    Dip VERTICAL
    Width 0.61M

Controls for ore emplacement

  • Pegmatites

Comments on the geologic information

  • A BULLDOZER TRENCH CUT PERPENDICULAR TO THE TREND OF THE PEGMATITE IN ONE OF THE PITS SHOWS A TWO-FOOT WIDE RADIOACTIVE ZONE TRANSECTING THE PEGMATITE. THIS TRENCH EXPOSED THE BOTTOM OF THE PEGMATITE, THEREBY INDICATING A LACK OF TONNAGE. THE RADIOACTIVE ZONE IS INDISTINCT IN ANOTHER OF THE TRENCHES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1955
Discoverer Oscar Rogers

Ownership information

  • Type Owner-Operator
    Owner Mccall Manufacturing Co.
    Home office Easley, S.C.

Comments on the workings information

  • INITIAL PROSPECTING INCLUDED 9 SMALL PITS, SOME OF WHICH WERE SUBSEQUENTLY ENLARGED BY TRENCHING. THREE BULLDOZER TRENCHES WERE DUG DURING 1963, AND WERE PERPENDICULAR TO THE TREND OF THE RADIOACTIVELY ANOMALOUS ZONE. THE OPENINGS WERE FILLED FOLLOWING THE INVESTIGATION.

Comments on development

  • THE OCCURRENCE WAS DISCOVERED BY OSCAR ROGERS, USING A SCINTILLOMETER. R.C. MCCALL ENGAGED S.W. MAHER AND PRATT FINLAYSON OF THE TENNESSEE DIVISION OF GEOLOGY, ON A CONSULTING BASIS, TO INVESTIGATE THE PROSPECT DURING 1963. ; ECON.COM: VEINS OF LIMITED EXTENT; LOW TONNAGE; RADIOACTIVE MINERALS ARE SILICEOUS AND CONSEQUENTLY HIGHLY REFRACTORY.

Reference information

Bibliographic references

  • Deposit

    CONLEY, J.F., 1958, MINERAL LOCALITIES OF NORTH CAROLINA: NORTH CAROLINA DIV. MINERAL RESOURCES INF. CIRC. 16, 83 P

  • Deposit

    1958 COMPILE CONLEY, J.F., N.C. INF. CIR. 1

General comments

Subject category Comment text
Deposit THE ALLANITE-BEARING PEGMATITES APPEAR TO BE LIMITED IN EXTENT, BOTH LATERALLY AND VERTICALLY, AND SO FAR AS IS KNOWN, DO NOT OCCUR IN ECONOMICALLY MINABLE QUANTITIES.
Deposit Discovery Year: MID-1950'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1975 Hale, Robin C. U.S. Geological Survey
Updater 01-JUN-1992 Klein, T.L. U.S. Geological Survey

Beyond USGS

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

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