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Kirby Magnetite Prospect

Occurrence in Ashe county in North Carolina, United States with commodity Iron
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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. Economic information about the deposit and operations
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10026398
MRDS ID K004810
Record type Site
Current site name Kirby Magnetite Prospect
Related records 10175036

Geographic coordinates

Geographic coordinates: -81.51621, 36.56925 (WGS84)
Relative position ON NOSE OF RIDGE BETWEEN HELTON CREEK AND LOST BRANCH, 2.9 MILES NE OF TUCKERDALE.

Site location context

Political divisions (FIPS codes)

Ashe(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Park(quadrangle 1:24,000 scale)

Wytheville(quadrangle 1:100,000 scale)

Winston-Salem(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper New(hydrologic unit)

Kanawha(hydrologic accounting unit)

Kanawha(hydrologic subregion)

Ohio(hydrologic region)

Geographic areas

Country State County
United States North Carolina Ashe

Comments on the location information

  • LOCATION IS APPROXIMATE.

Commodities

Commodity Importance
Iron Tertiary

Materials information

Materials Type of material
Magnetite Ore
Epidote Gangue
Hornblende Gangue
Pyroxene Gangue

Analytical data

Result ANALYSIS REPORTED BY NITZE (1893): 48.87% FE, 17.25% SIO2, 0.066% P, 0.057% S, 0.210% TIO2, AND NO CR2O3.

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Cranberry Gneiss; Complex Of Intertonguing Rock Types Including Migmatite, Granitic Gneisses, Monzonite, Quartz Diorite, Greenstone, Mica And Hornblende Schists, Abundant Granitic Pegmatite
    Rock description Cranberry Gneiss; Complex Of Intertonguing Rock Types Including Migmatite, Granitic Gneisses, Monzonite, Quartz Diorite, Greenstone, Mica And Hornblende Schists, Abundant Granitic Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) Biotite Granitic Gneiss
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Northeast

Ore body information

  • General form PINCH AND SWELL, LENS
    Width 5.18M

Comments on the geologic information

  • BAYLEY (1923) OBSERVED THAT THE FEW ORE SPECIMENS FOUND ON THE DUMP CONSIST OF "...GRANULAR HORNBLENDE AND MAGNETITE WITH STREAKS OF EPIDOTE HERE AND THERE...", AND INFERRED THAT THE ORE WAS PROBABLY SIMILAR TO THAT AT THE CRANBERRY MAGNETITE MINE. NO PEGMATITE WAS OBSERVED, HOWEVER.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Pennsylvania Steel Co.

Comments on the workings information

  • WORKINGS CONSIST OF TWO CUTS, 55 FEET AND 90 FEET ABOVE LOST BRANCH. THE COUNTRY ROCK IS NOT EXPOSED NEAR THE PITS, BUT ABOUT 0.75 MILE AWAY, THE SCHIST STRIKES N 80 W AND DIPS 25 S.

Comments on development

  • A MR. STURGILL IS REPORTED TO HAVE DUG A LONG, OPEN CUT NEARBY IN 1892. ; ECON.COM: THE MAGNETITE IS EASILY SEPARATED FROM GANGUE AND IS EXCEPTIONALLY LOW IN PHOSPHOROUS, TITANIUM, AND SULFUR.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit BAYLEY (1923) STATES THAT THE HOST ROCK - ORE RELATIONSHIPS WERE NOT EVIDENT BECAUSE OF THE POOR EXPOSURES OF THE HOST ROCK, WHICH WAS NOT DESCRIBED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1975 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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