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Patapsco Mines

Past Producer in Carroll county in Maryland, United States with commodities Cobalt, Copper, Iron, Nickel
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10145484
MRDS ID W000713
MAS/MILS ID 0240130005
Record type Site
Current site name Patapsco Mines
Alternate or previous names Finksburg Mine, Wildesen Mine, Orchard Mine
Related records 10105495

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -76.87717, 39.48922 (WGS84)
Elevation 160
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Carroll(county)

Maryland(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Finksburg(quadrangle 1:24,000 scale)

Baltimore(quadrangle 1:100,000 scale)

Baltimore(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Gunpowder-Patapsco(hydrologic unit)

Upper Chesapeake(hydrologic accounting unit)

Upper Chesapeake(hydrologic subregion)

Mid Atlantic(hydrologic region)

Geographic areas

Country State County
United States Maryland Carroll

Commodities

Commodity Importance
Cobalt Critical Tertiary
Copper Tertiary
Iron Tertiary
Nickel Critical Tertiary

Materials information

Materials Type of material
Actinolite Unknown
Bornite Unknown
Carrollite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Chlorite Unknown
Epidote Unknown
Gahnite Unknown
Magnetite Unknown
Pyrite Unknown
Quartz Unknown
Serpentine Unknown
Siegenite Unknown
Steatite Unknown
Talc Unknown

Nearby scientific data

Main Entrance (1) Wissahickon Formation (Undivided)
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 90N
    Thickness 366M
    Length 1207M
    Width 111M
    Area 3HA
    Field Value
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin METAMORPHISM
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N30E:90N
    Total Surface Area (HA) 3
    Date of Last Modification 820616

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1849

Mining district

District name Sykesville

Mineral rights holdings

Type of mineral rights Fee Ownership
Type of mineral rights Unknown

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Miss Nellie King (1942 Records) (Northern Property)
    Interest 50
    Home office California
    Year 1976
  • Type Owner
    Owner Keidell, William (Southern Property)
    Interest 50
    Home office Maryland
    Year 1976

Reference information

Bibliographic references

  • Deposit

    CONFIDENTIAL UNPUBLISHED WAR MINERAL REPT FILES, PATAPSCO MI

  • Deposit

    CARROLL CO., MD., MISC REPTS INCLUDING REGIONAL FILE NO 290

  • Deposit

    ESPENSHADE, GILBERT K., REPT. ON MD COPPER MINES AND PROSPEC

  • Deposit

    USGS UNPUBLISHED REPT, AUG 13, 1942 P 5

  • Deposit

    HEYL, ALLEN V., AND PEARRE, NANCY C., MD GEOL. SURV. BULL 28

General comments

Subject category Comment text
Deposit RECORDS 800-820 OF 1976 ENTRY REC 011 NORTHERN WORKINGS KNOWN AS ORCHARD MINE, SOUTHERN S WILDESEN MINE. REC 080 LOCATION OF SHAFT OF ORCHARD MINE REC 040 MAX SUR AREA POTENTIALLY DISTURBED ROUGHLY MEASURED FIG 9.A REC 705 REC 050 WILDESEN MINE OPENED 1849, ORCHARD-1851. COBALT DIS 1852. LAST OPERATIONS EARLY 1880 S. INFO FROM REC 705 REC 060 MOST ABUNDANT OUTCROPS ARE QUARTZ-BIOTITE-CHLORITE AND A PHYLLITE. MINE DUMPS SHOW A HORNBLENDE-CHLORITE SCHIST BIOTITE SCHIST REC 070 OVERALL GRAIN SIZE- REC 705 P 17. MINERALOGY OF VEI REC 080 INFO PRIMARILY FROM REC 700 AND 702. LENGTH OF MIN 7 VEINS EN ECHELON AT INTERVALS OVER 3/4 MILE. WIDTH IS DEP ORCHARD MINE IN 1865. THICKNESS ROUGHLY MEASURED FROM FIG 9- 705. VEINS ARE 3-12 FT THICK. 3 OUT OF 7 WERE MINED. WELL DE ORE SHOOTS IN WIDE PARTS OF VEINS RAKE NORTHWARD. VEINS ARE DIPPING AT WILDESEN MINE 70 DEG SE TO VERTICAL. CARROLLITE O IN SCHIST NEAR CONTACT WITH PEGMATITE. COBALT INCREASES WITH GAHNITE IS COBATIFERROUS AND INTERGROWN WITH MAGNETITE AND C PYRITE REC 010- COMMODITY 4 (NICKEL) ADDED JULY 1977 BY CAB. SEE RE

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Sapakoff U.S. Bureau of Mines

Beyond USGS

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

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