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Grassy Hill Prospect

Occurrence in Franklin City (City) county in Virginia, United States with commodity Copper
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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. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10080013
MRDS ID W030892
Record type Site
Current site name Grassy Hill Prospect

Geographic coordinates

Geographic coordinates: -79.89977, 37.01674 (WGS84)
Relative position EXACT LOCATION UNKNOWN.

Site location context

Political divisions (FIPS codes)

Franklin(county)

Virginia(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Boones Mill(quadrangle 1:24,000 scale)

Roanoke(quadrangle 1:100,000 scale)

Roanoke(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Roanoke(hydrologic unit)

Roanoke(hydrologic accounting unit)

Chowan-Roanoke(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States Virginia Franklin City (City)

Comments on the location information

  • ACCORDING TO FONTAINE (1883, P. 179), THE DEPOSIT OCCURS NORTHWEST OF ROCKY MOUNT ON THE SOUTHEAST SIDE OF GRASSY HILL.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chlorite Gangue
Serpentine Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Rock unit name Gabbro
    Rock description Gabbro

Nearby scientific data

(1) Mafic Igneous Complex Undivided
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Economic information

Geologic structures

Type of structure Regional
Structure description Ne-Sw Trend, Smith River Allocthon

Comments on the geologic information

  • BORNITE OCCURS PRIMARILY IN CHLORITE ZONES NEAR CONTACT WITH MORE SIALIC MATERIAL.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1776

Comments on the workings information

  • ONLY SHALLOW DEPRESSIONS SEEN IN 1882.

Comments on development

  • FONTAINE (1883) REPORTS SEEING PROSPECT PITS WHICH POSSIBLY DATE FROM PRE-REVOLUTIONARY WAR DAYS.

Reference information

Bibliographic references

  • Deposit

    FONTAINE, W.M., 1883-84, NOTES ON THE GEOLOGY AND MINERAL RESOURCES OF THE FLOYD, VA., PLATEAU: THE VIRGINIAS, V. 4, P. 167, 178-180, 185-192; V. 5, P. 8-12

  • Deposit

    DIREXPL DEPOSIT PROSPECTED

General comments

Subject category Comment text
Deposit FONTAINE (1883) CONSIDERED THIS DEPOSIT TO BE IDENTICAL IN TYPE TO THE COPPER DEPOSITS IN THE GLADES DISTRICT, AMHERST CO. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1980 Meintzer, Robert E. (Sweet, P. C.) U.S. Geological Survey

Beyond USGS

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

Maps centered on this site