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

Breadnut Valley

Producer in Clarendon, Jamaica with commodity Aluminum
Map
XML
JSON
KML
B
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 10182224
MAS/MILS ID 2420370001
Record type Site
Current site name Breadnut Valley
Alternate or previous names Teak Pen Mine, Mocho Bauxite Mine, Maypen Mine, Jamalco Mine, Clarenon Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -77.48305, 17.8757 (WGS84)
Elevation 350
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Clarendon(province)

Jamaica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Jamaica Clarendon

Commodities

Commodity Importance
Aluminum Critical Primary

Materials information

Materials Type of material
Boehmite Unknown
Gibbsite Unknown

Nearby scientific data

Ore Body (1) -77.48305, 17.8757
ListMap

Economic information

Ore body information

  • Thickness 23M
    Depth to top 0.6M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 LATERITE
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 OTHER
    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. .6
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 900529
  • Area 7800HA
    Field Value
    Total Surface Area (HA) 7800
    Date of Last Modification 910418

Comments on the geologic information

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

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 1963

Mining district

District name Macho Mountains

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 Jamalco
    Interest 100
    Home office Jamaica
    Year 1987
  • Type Owner
    Owner Alcoa - Aluminum Co. Of America
    Interest 50
    Home office Jamaica
    Year 1987
  • Type Owner
    Owner Government Of Jamaica
    Interest 50
    Home office Jamaica
    Year 1987

Production statistics

  • Year 1979
    Period 1972 To 1979
    Description Bauxite Ore Production 1972 To 1979 1350000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1350000mt
  • Year 1980
    Description Bauxite Ore 1230000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1230000mt
  • Year 1981
    Description Bauxite Ore 1200000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1200000mt
  • Year 1982
    Description Bauxite Ore 600000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 600000mt
  • Year 1983
    Description Bauxite Ore 750000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 750000mt
  • Year 1984
    Description Bauxite Ore 980000 Mtyp
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 980000mt
  • Year 1985
    Description Bauxite Ore 1000000 Mypy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 1000000mt
  • Year 1986
    Description Bauxite 1500000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Aluminum Aluminum 1500000mt
  • Year 1987
    Description Bauxite Ore 2132000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2132000mt
  • Year 1988
    Description Bauxite Ore 2188000 Mypy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2188000mt
  • Year 1989
    Description Bauxite Ore 2344000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2344000mt
  • Year 1990
    Description Bauxite Ore 2500000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2500000mt
  • Year 1991
    Description Bauxite Ore, Future Productio 91-95 3500000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 3500000mt

Comments on the production information

  • THE YIELD IS A BAUXITE ORE.
  • THE PRODUCT IS A BAUXITE ORE. SEE YEILDS FOR GRADE DATA. PRODUCT CAPACITY IS BASED ON MINE PRODUCTION RATE OF 3.5 MILLION MT OF BAUXITE ORE PER YEAR. SEE MINE DATA SET (S)

Comments on the reserve resource information

  • RESERVE DATA FROM GOLDERS 1981 BREADNUT VALLEY DEPOSIT PROFILE REPORT, PAGE 3 SEC 2.4.. THESE RESERVES ARE DIVIDED BETWEEN THE CLARENDON, ST. CATHERINE, AND THE MANCHESTER AREAS; WITH 58 AND 106 MMT RESPECTIVELY. M1C3=M9C6; 1987 UPDATE INSITU BAUXITE ORE RESERVES/RESOURCES FROM 1987 UPDATE STUDY ETD, 12/88, AND FIELD TRIP NOTES.
  • OPERATOR IS OWNED BY THE FOLLOWING FIRMS: 1) ALUMINUM COMPANY OF AMERICA 94% 2) GOVERNMENT OF JAMAICA 6% OPERATOR: ALCOA MINERALS OF JAMAICA. ON ORIGINAL CONTRACT AS MOCHO BAUXITE MINE. ALSO IS KNOWN AS CLARENDON MINE, TEAK PEN MINE, MAYPEN MINE, JAMALCO, MOCHO MTNS.

Workings at the site

  • Type of workings Surface
    Area 7800HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Overburden Thickness .6
    Primary Material Cover SAND, SILT
    Percentage 100
    Hardness of Ore SAND, GRAVEL
    Avg. Bench Height (meters) 20
    Max. Pit Slope (degrees) 25
    Capacity 13462
    Capacity Units MT ORE/DAY
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1987

Comments on other economic factors

  • MINE RECOVERY IS 90.0%. MINE CAPACITY IS BASED ON FULL PRODUCTION RATE OF 3.5 MILLION MTPY, BEGINNING IN 1991.
  • DRYING PLANT, (CONCENTRATOR), IS LOCATED AT THE REFINERY.
  • FEEDS DATA SET; GRADE OF BAUXITE ORE GOING TO THE DRYING PLANT. SAME AS THE PRODUCT AND YEILD DATA SETS.

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 I

  • 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

    ENGINEERING AND MINING JOURNAL, ALCOA-THE NEWCOMER WITH

  • Deposit

    PROGRESSIVE IDEAS, NOV. 1977, P. 120-121.

  • Deposit

    ENGINEERING AND MINING JOURNAL, JAMAICA: GOVERNMENT PARTNER-

  • Deposit

    SHIPS AND RECENT DECLINES SHAPE INDUSTRY PROFILE,

  • Deposit

    NOV. 1977, P. 98-102.

  • Deposit

    GLEANER, ALCOA DEAL SIGNED IN NORWAY, MARCH 31, 1981.

  • Deposit

    PRIVATE COMMUNICATION, JAMAICAN BAUXITE INSTITUTE, 1981.

  • Deposit

    AMM, MARCH 19,1988.

General comments

Subject category Comment text
Deposit THE TOPOGRAPHY IS HILLY, HOWEVER THE DEPOSITS ARE FLAT LYING.

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.

Maps centered on this site