1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Ewarton

Producer in Jamaica with commodity Aluminum
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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. Production statistics
  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 10303992
MAS/MILS ID 2420110002
Record type Site
Current site name Ewarton
Alternate or previous names Schwallenberg Mine, Ewarton Mine

Comments on the site names

  • THIS PROPERTY IS ALSO KNOWN AS SCHWALLENBERG.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -77.13304, 18.23398 (WGS84)
Elevation 350
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Jamaica(country)

North America(continent)

Land(continent)

Geographic areas

Country
Jamaica

Commodities

Commodity Importance
Aluminum Critical Primary

Materials information

Materials Type of material
Boehmite Unknown
Gibbsite Unknown

Nearby scientific data

Ore Body (1) -77.13304, 18.23398
ListMap

Economic information

Ore body information

  • Thickness 9M
    Depth to top 0.5M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 LATERITE
    Shape of Orebody #1 MANTLELIKE
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Shape of Orebody #3 LENTICULAR
    Primary mode of Origin RESIDUAL CONCENT
    Secondary mode of Origin OXIDATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 900524
  • Area 7224HA
    Field Value
    Total Surface Area (HA) 7224
    Date of Last Modification 910418

Comments on the geologic information

  • THE DEPOSITS OCCUR PRIMARILY AS INFILLINGS IN VERTICAL WALLED DEPRESSIONS FORMED BY THE COALESCENCE OF CYLINDRICAL VERTICAL PIPES IN THE HIGHLY FRACTURED WHITE LIMESTONE.
  • GANGUE MINERALS ALSO INCLUDE SILICA, IRON OXIDES, AND PHOSPHOROUS.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1942
Year of first production 1959

Mining district

District name St. Anne

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Minerals Only

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Alcan Jamaica Ltd. (Jamalcan)
    Interest 93
    Home office Jamaica
    Year 1981
  • Type Owner
    Owner Government Of Jamaica
    Interest 7
    Home office Jamaica
    Year 1981

Production statistics

  • Year 1981
    Period 1972 To 1981
    Description Update Study Production, 1972 To 1981 1150 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1150mt
  • Year 1982
    Description Bauxite Ore 765 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 765mt
  • Year 1983
    Description Bauxite Ore 810 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 810mt
  • Year 1984
    Description Bauxite Ore 810 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 810mt
  • Year 1985
    Description Bauxite Ore 820 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 820mt
  • Year 1986
    Description Bauxite Ore 700 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 700mt
  • Year 1987
    Description Bauxite Ore 700 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 700mt
  • Year 1988
    Description Bauxite Ore 900 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 900mt
  • Year 1989
    Description Bauxite Ore 1100 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1100mt
  • Year 1990
    Description Bauxite Ore 1100 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1100mt

Comments on the production information

  • PRODUCT IS BAUXITE AT 41.6% ALUMINA (AL2O3)

Comments on the reserve resource information

  • M1C1=M9C4. THIS DATA IS FROM THE GOLDER ASSO. 1980-81 ALUMINUM CONTRACT TONNAGE DATA IN QM1 AND QM9, COLS 3 AND 6 ARE THE ESTIMATED 1987 INSITU RESERVE TONNAGE BASED ON THE GOLDER 1981 RECOVERABLE ORE ESTIMATE. THE 1987 RECOVERABLE TONNAGE IS ESTIMATED AT 49795000 MT AT 41.6% AL2O3, USING A 90% MINE RECOVERY AND 5.0% ORE DILUTION FACTOR.

Workings at the site

  • Type of workings Surface
    Area 7224HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Swell Factor 0
    Percent Waste Rock 0
    Avg. Overburden Thickness .5
    Primary Material Cover SAND, GRAVEL
    Percentage 100
    Hardness of Ore SAND, GRAVEL
    Max. Pit Slope (degrees) 25
    Capacity 5000
    Capacity Units MT ORE/DAY
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1987

Reference information

Bibliographic references

  • Deposit

    LYEW-AYEE,PARIS A.JUNE,1973.AN APPLICATION OF MATHEMATICAL P

  • Deposit

    MING AND SYSTEMS SIMULATION TO BAUXITE MINING OPERATIONS

  • Deposit

    JAMAICA;MASTERS THESIS,PENN STATE UNIV.PP.1-9

  • Deposit

    ALUMINUM CONDUCTOR DEVELOPMENT CORP.1973.SURVEY OF PLANNED

  • Deposit

    INCREASES IN WORLD BAUXITE,ALUMINA&ALUMINUM CAPACITIES,197

  • Deposit

    LONDON,ENGLAND,1974.P.91.

  • Deposit

    MOOREHEAD,G.A. BAUXITE MINING IN JAMAICA.MINE&QUARRY ENGINEE

  • Deposit

    JUNE,1961.PP. 248-257

  • Deposit

    TERRIER,C.O.CHIEF ENGINEER,REYNOLDS JAMAICA MINES,LTD.;LETTE

  • Deposit

    APRIL 29,1975

  • Deposit

    HOSE,H.R.SUBSURFACE GEOLOGY AND GENESIS OF THE BAUXITES E.OF

  • Deposit

    HOLES EN PROVENCE.PROCEEDINGS,3RD INT. CONG.OF ICSOBA,NICE

  • Deposit

    PP.75-78.

  • Deposit

    ENGINEERING AND MINING JOURNAL, ALCAN- BAUXITE PIONEER

  • Deposit

    OPERATES TWO ALUMINA PLANTS, NOV.1977, P.115-117.

General comments

Subject category Comment text
Deposit 1987 MAFO UPDATE, EVALUATION 12-88.
Deposit THE DEPOSITS ARE FLAT LYING, THE GENERAL TOPOGRAPHY IS HILLY

Reporter information

Type Date Name Affiliation Comment
Reporter 25-SEP-96 Wilburn, David R. 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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