Sealoch Mine

Past Producer in Warren county in Virginia, United States with commodity Copper
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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10080046
MRDS ID W030932
Record type Site
Current site name Sealoch Mine
Alternate or previous names Sealock Mine, Marshall Mine, Ravenswood Mine

Geographic coordinates

Geographic coordinates: -78.10693, 38.88198 (WGS84)
Elevation 591
Relative position 4.11 KM (2.55 MI) SW OF LINDEN; 0.3 KM (0.2 MI) OFF N SIDE OF SUMMIT DR. ABOUT 1.8 KM (1.1 MI) BY ROAD E OF ITS INTERSECTION WITH HIGH KNOB DRIVE.

Site location context

Political divisions (FIPS codes)

Warren(county)

Virginia(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Linden(quadrangle 1:24,000 scale)

Front Royal(quadrangle 1:100,000 scale)

Charlottesville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Shenandoah(hydrologic unit)

Potomac(hydrologic accounting unit)

Potomac(hydrologic subregion)

Mid Atlantic(hydrologic region)

Geographic areas

Country State County
United States Virginia Warren

Comments on the location information

  • 680M SE OF BENCHMARK ON SUMMIT OF HIGH KNOB.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Copper Ore
Cuprite Ore
Malachite Ore
Quartz Gangue

Alteration

  • (Local) Concentration

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Catoctin Formation
    Rock description Catoctin Formation
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Meta-Basalt

Nearby scientific data

(1) -78.10693, 38.88198

Economic information

Geologic structures

Type of structure Regional
Structure description Blue Ridge Anticlinorium
Type of structure Local
Structure description Front Royal Fault

Ore body information

  • General form IRREGULAR

Controls for ore emplacement

  • Along Lines Of Jointing Or Schistosity

Comments on the geologic information

  • FAULT IS STRIKE-SLIP ABOUT 3 KM N OF SITE TRENDING EAST-WEST.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1863
Year of first production 1861

Mining district

District name Northern Section-Blue Ridge Province

Land status

Ownership category Private

Production statistics

  • Year 1861
    Material CU
    Accuracy Accurate
    Description Ap_Grade: ^More Than 10% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 10wt-pct

Workings at the site

  • Type of workings Underground
    Length 61M
    Overall depth 24.4M

Comments on the workings information

  • 24.4M SHAFT REPORTEDLY CALLED PHILLIPS SHAFT. 35 TONS OF GOOD ORE SHIPPED FROM THIS SHAFT, 1861; 2 OTHER SHAFTS, THE SOLOMON, AND THE SEALOCK WHICH WAS REPORTEDLY 13M DEEP AND INCLINED 70 DEG S. TUNNEL DRIVEN FROM HILLSIDE TO CONNECT WITH SOLOMON SHAFT. IN 1978, THE ABANDONED SITE WAS REPORTED AS A 2M DIAMETER PIT WITH A LARGE SPREAD OUT RIM DUMP.

Reference information

Bibliographic references

  • Deposit

    SWEET, P.C. AND BELL, S.C., 1980 METALLIC MINERALIZATION IN THE BLUE RIDGE PROVINCE OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES IN PREPARATION

  • Deposit

    WATSON, T.L., 1907, MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VA, J.P. BELL CO., 618 P.

  • Deposit

    LUTTRELL, G.W., 1966, BASE-AND PRECIOUS-METAL AND RELATED ORE DEPOSIOF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 7, 167 P.

  • Deposit

    WEED, W.H., 1911, COPPER DEPOSITS OF THE APPALACHIAN STATES, U.S. GEOLOGICAL SURVEY BULLETIN 455, 166 P.

  • Deposit

    1861 DIREXPL 35 TONS OF CU ORE REMOVED AND SHIPPED ABROAD.

  • Deposit

    1904 DIREXPL 61M SHAFT DRIVEN.

  • Deposit

    1978 RECON VA. DIV. OF MINERAL RESOURCES; SITE INSPECTED.

  • Production

    WEED (1911).

General comments

Subject category Comment text
Deposit NO CU MINERALIZATION WAS REPORTED SEEN IN 1978.
Deposit THE ENTIRE AREA HAS BEEN LOGGED OVER IN THE LAST 15 TO 20 YEARS (AS OF 1978), AND DEBRIS MAY HAVE FILLED PITS AND DEPRESSIONS. ; INFO.SRC : 1 PUB LIT
Deposit Discovery Year: CIVIL WAR

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1979 Beaulieu, Harvey R. (Le Van, D. C.) U.S. Geological Survey

Beyond USGS

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