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Cornwall Mine and Pellet Plant

Past Producer in Lebanon county in Pennsylvania, United States with commodities Cobalt, Copper, Iron, Sulfur-Pyrite, Manganese, Phosphorus-Phosphates, Silica, Silver, Sulfur
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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. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10299283
MRDS ID W022106
MAS/MILS ID 0420750004
Record type Site
Current site name Cornwall Mine and Pellet Plant
Related records 10075511

Geographic coordinates

Point of reference Trench
Geographic coordinates: -76.4033, 40.2694 (WGS84)
Elevation 134
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Lebanon(county)

Pennsylvania(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lebanon(quadrangle 1:24,000 scale)

Harrisburg(quadrangle 1:100,000 scale)

Harrisburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Susquehanna(hydrologic unit)

Lower Susquehanna(hydrologic accounting unit)

Susquehanna(hydrologic subregion)

Mid Atlantic(hydrologic region)

Geographic areas

Country State County
United States Pennsylvania Lebanon

Commodities

Commodity Importance
Cobalt Critical Tertiary
Copper Tertiary
Iron Tertiary
Sulfur-Pyrite Tertiary
Manganese Critical Tertiary
Phosphorus-Phosphates Tertiary
Silica Tertiary
Silver Tertiary
Sulfur Tertiary

Materials information

Materials Type of material
Actinolite Unknown
Adularia Unknown
Alabandite Unknown
Andalusite Unknown
Andesine Unknown
Andradite Unknown
Anorthoclase Unknown
Antigorite Unknown
Apatite Unknown
Apophyllite Unknown
Aragonite Unknown
Augite Unknown
Azurite Unknown
Bieberite Unknown
Biotite Unknown
Bornite Unknown
Brochantite Unknown
Brucite Unknown
Calcite Unknown
Chabazite Unknown
Chalcanthite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Chlorite Unknown
Chrysocolla Unknown
Chrysolite Unknown
Clinohypersthene Unknown
Clinozoisite Unknown
Copper Unknown
Cordierite Unknown
Covellite Unknown
Crednerite Unknown
Cuprite Unknown
Datolite Unknown
Diopside Unknown
Dolomite Unknown
Enstatite Unknown
Epidote Unknown
Erythrite Unknown
Galena Unknown
Hematite Unknown
Magnetite Unknown
Marcasite Unknown
Millerite Unknown
Phlogopite Unknown
Pyrite Unknown
Pyrrhotite Unknown
Sphalerite Unknown
Wurtzite Unknown

Nearby scientific data

Trench (1) -76.4033, 40.2694
ListMap

Economic information

Ore body information

  • Strike N80E
    Dip 25S
    Thickness 30M
    Length 2135M
    Width 1220M
    Area 172HA
    Depth to top 180M
    Field Value
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 LENTICULAR
    Shape of Orebody #2 IRREGULAR
    Shape of Orebody #3 OTHER
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 POTASSIC
    Type of Wallrock Alter. #2 CARBONATE SILIC
    Strike And Dip N80E:25S
    Minimum Depth to Top 0
    Total Surface Area (HA) 172
    Date of Last Modification 801219

Comments on the geologic information

  • IN ADDITION TO THE COMMON ORE AND GANGUE MINERALS THE ORE INCLUDES ALTERATION PRODUCTS SUCH AS CLAY AND ZEOLITE MINERALS AND SECONDARY OXIDES.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Both
Significant No
Discovery year 1732
Year of first production 1737

Mining district

District name Cornwall

Mineral rights holdings

Type of mineral rights Fee Ownership
Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Bethlehem Mines Corp.
    ID 3602626
    Interest 100
    Home office Pennsylvania
    Year 1976

Comments on the ownership information

  • DURING OPERATION MINE WAS OWNED BY BETHLEHEM MINES CORP. A SUBSIDIARY OF BETHLEHEM STEEL CORP . 701 E. THIRD ST. BETHLEHEM PA. SINCE CLOSING, SOME BUILDINGS AND ABOUT 500 ACRES OF LAND IN LEBANON HAVE BEEN SOLD TO THE CLEAVER- BROOKS DIVISION OF AQUA-CHEM CORPORATION.

Comments on the production information

  • UNDERGROUND MINING ENDED IN 1972 AFTER FLOODING, OPEN PIT CLOSED IN 1973 AFTER FINAL SURFACE ORE DEPLETION, PELLET PLANT PROCESSED FOREIGN ORE UNTILL JULY 1977 WHEN IT CLOSED. HISTORY DATA TAKEN FROM 3 REFERENCES BY LAPHAM AND LAPHAM AND GRAY. CLOSING DATE OF PELLET PLANT BY PERSONAL COMMUNICATION.

Reserves and resources

  • Type In-situ
    Estimate year 1973
    Measured 22675000mt ore
    Demonstrated 22675000mt ore
    Total resources 22675000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.06 wt-pct Copper Trace 1973
  • Type In-situ
    Estimate year 1973
    Measured 22675000mt ore
    Demonstrated 22675000mt ore
    Total resources 22675000mt ore
    Commodity Subtype Grade units Group Importance Year
    Cobalt Co 0.056 wt-pct Cobalt Trace 1973

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976
  • Type of workings Underground
    Overall depth 213M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BLOCK CAVING 10-79
    Swell Factor .27
    Percent Waste Rock 0
    Hardness of Rock SOFT NONPLASTIC FISSURED MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. COMPLETELY INCOMPETENT
    Mine Support Chars. CAN'T SUPPORT FILL OR CAVE
    Number of Shafts 4
    1st Condition of Workings FLOODED
    Capacity 5575
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976

Comments on the workings information

  • SURFACE AREA DISTURBED IS CALCULATED FROM 7.5 MINUTE TOPOGRAPHIC MAP.

Comments on other economic factors

  • DURING OPERATION PYRITE CONCENTRATE WAS SHIPPED TO SPARROWS POINT MARYLAND PLANT FOR ROASTING UNTIL IT WAS CLOSED IN 1971, AFTER WHICH COBALT WAS NOT RECOVERED FROM THE CORNWALL ORE.

Reference information

Bibliographic references

  • Reserve-Resource

    THE ECONOMICS OF BYPRODUCT METAL, BUREAU OF MINES

  • Reserve-Resource

    INFORMATION CIRCULAR/1973.

  • Reserve-Resource

    ORE DEPOSITS OF THE UNITED STATES 1933-1967, VOLUME 1;

  • Reserve-Resource

    1968 EDITION. PG. 119.

  • Reserve-Resource

    COBALT: A MATERIALS SURVEY, BUREAU OF MINES INFORMATION

  • Reserve-Resource

    CIRCULAR 8103.

  • Deposit

    PEETS, ROBERT G, MINING HISTORY AT CORNWALL, PA, MINING ENGI

  • Deposit

    VOL 9, JULY 1957

  • Deposit

    LAPHAM, DAVIS M, TRIASSIC MAGNETITE AND DIABASE AT CORNWALL,

  • Deposit

    ORE DEPOSITS OF THE US, GRATON-SALES VOL 1, AIMME, NY, 1968

  • Deposit

    LAPHAM AND GRAY, GEOLOGY AND ORIGIN OF THE TRIASSIC MAGNETIT

  • Deposit

    POSIT AND DIABASE AT CORNWALL, PA, PA GEOL SUR BULL M56, 197

  • Deposit

    LAPHAM, D M, CORNWALL- THE END OF AN ERA, PA GEOL SUR BIMONT

  • Deposit

    GEOLOGY, OCT 1972

  • Deposit

    LAPHAM AND GEYER, MINERAL COLLECTING IN PA, PA GEOL SUR BULL

  • Deposit

    2ND ED, 1965

  • Deposit

    GORDON, SAMUEL G, MINERALOGY OF PA, SPECIAL PUBLICATION 1, A

  • Deposit

    NAT SCI OF PHILADELPHIA, 1922

  • Deposit

    GRAY AND LAPHAM, GUIDE TO THE GEOLOGY OF CORNWALL, PA, PA GE

  • Deposit

    BULL G35, 1961

  • Deposit

    ANDREWS, R W, COBALT, OVERSEAS GEOLOGICAL SURVEYS, HER MAJES

  • Deposit

    STATIONERY OFFICE, LONDON, 1962

  • Deposit

    BETHLEHEM MINES CORP, ENGINEERING AND MINING JOURNAL, INTERN

  • Deposit

    DIRECTORY OF MINING, 1972

  • Deposit

    COBALT MATERIALS SURVEY, BUMINES-USGS, FEB 1952

  • Deposit

    ROSE, ARTHUR, ATLAS OF PA MINERAL RESOURCES, PA GEOL SUR BUL

  • Deposit

    PART 3, 1970

  • Deposit

    NORTH ATLANTIC REGIONAL STUDY, NICKEL, COBALT AND PYRITE, BU

  • Deposit

    1967

  • Deposit

    AREA REPORTS- DOMESTIC, BUMINES MINERALS YEARBOOK, VOL 2, 19

  • Deposit

    BETHLEHEM TO RESUME CORNWALL CONCENTRATOR, SKILLINGS MINING

  • Deposit

    SEPT 21, 1974

  • Deposit

    SPENCER, ARTHUR C, MAGNETITE DEPOSITS OF THE CORNWALL TYPE I

  • Deposit

    USGS BULL 359, 1908

  • Deposit

    ENGINEERING AND MINING JOURNAL, DIRECTORY OF MINING AND MINE

  • Deposit

    OPERATIONS, 1973-74

  • Deposit

    BILBREY, JOSEPH, COBALT- A MATERIALS SURVEY, BUMINES IC-8103

  • Deposit

    MATERIALS SURVEY- IRON ORE, BUMINES- USGS, MAY 1956

  • Deposit

    THE ECONOMICS OF BYPRODUCT METALS, BUMINES IC-8570, 1973

  • Deposit

    SUSQUEHANNA RIVER BASIN STUDY, APPENDIX 1- MINERAL RESOURCES

  • Deposit

    MINES, JUNE 1970

  • Deposit

    FANALE AND KULP, THE HELIUM METHOD AND AGE OF CORNWALL, PA,

  • Deposit

    ITE ORE, ECON GEOL VOL 57, NO 5, AUG 1962

  • Deposit

    RIDGE, JOHN D, ANNOTATED BIBLIOGRAPHIES OF MINERAL DEPOSITS

  • Deposit

    WESTERN HEMISPHERE, GSA MEMOIR 131, 1972

  • Deposit

    DAVIDSON AND WYLLIE, ZONED MAGNETITE AND PLATY MAGNETITE IN

  • Deposit

    WALL TYPE ORE DEPOSITS, ECON GEOL VOL 60, 1965

  • Deposit

    TRIP REPORT, GRACE MINE AND CORNWALL PLANT, MEMORANDUM, APR

  • Deposit

    1976

General comments

Subject category Comment text
Deposit IN JUNE 1979 BETHLEHEM STEEL PERSONNEL WERE CONTACTED REGARDING POSSIBLE LOW GRADE COBALT RESOURCES AT CORNWALL AND GRACE PROPERTIES. BETHLEHEM STEEL HAS NOT DONE A SYSTEMATIC STUDY OF COBALT RESOURCES IN THEIR TAILINGS, NOR DID THEY USUALLY ASSAY FOR COBALT DURING EXPLORATION PROGRAMS WHICH THEY CONDUCTED ELSEWHERE IN SE. PENNA. SHAPE AND DIMENSIONS OF OREBODY TAKEN FROM LAPHAM, LAPHAM AND GRAY , AND ROSE , LINES 3-6 AND 21 OF B SET.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Schmidt 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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