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Taquari-Vassouras

Producer in Sergipe, Brazil with commodity Potassium
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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. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10207088
MAS/MILS ID 3510590001
Record type Site
Current site name Taquari-Vassouras
Alternate or previous names Carmopolis

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -37.19888, -10.49784 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Sergipe(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Sergipe

Commodities

Commodity Importance
Potassium Primary

Materials information

Materials Type of material
Anhydrite Unknown
Carnallite Unknown
Halite Unknown
Sylvanite Unknown

Nearby scientific data

Ore Body (1) -37.19888, -10.49784
ListMap

Economic information

Ore body information

  • Thickness 6M
    Depth to top 460M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin EVAPORATION
    Date of Last Modification 850103
  • Area 3200HA
    Field Value
    Total Surface Area (HA) 3200
    Date of Last Modification 910418

Comments on the geologic information

  • THE PROSPECTIVE SOURCES OF POTASH ARE TWO SYLVANITE LAY- ERS SEPARATED BY A LAYER OF HALITE. THE SERGIPE SYLVANITE IS ABNORMALLY LOW IN BR.AND HIGH IN RB COMPARED WITH PRIMARY SYLVANITE AND IT IS THOUGHT TO HAVE BEEN DERIVED BY LEACHING FROM CARNALITE. IT IS UNCERTAIN THAT THE LOWER SYLVANITE BED WILL BE MINED DUE TO ITS PROXIMATY TO AN UNDERLYING LAYER OF TACHYHYDRITE, WHICH IS HIGHLY HYGROSCOPIC AND OF LOW MECH- ANICAL STRENGTH

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Non-metallic
Significant Yes
Discovery year 1966
Mining method Open Stope - Room and Pillar
Year of first production 1984
Milling method Flotation

Mining district

District name Sergipe

Mineral rights holdings

Type of mineral rights State Lease

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Companhia Vale Do Rio Doce (Cvrd)
    Interest 100
    Home office Brazil
    Year 1993
    First year 1991
    Last year 1994
  • Type Operator
    Owner Etrobras Mineracao S. A. (Petromisa)
    Interest 100
    Home office Brazil
    Year 1982
    First year 1982
    Last year 1991
  • Type Owner
    Owner Petrobras
    Interest 100
    Home office Brazil
    Year 1982
    First year 1982
    Last year 1991

Comments on the ownership information

  • PROPERTY WAS PURCHASED BY CVRD FROM PETROBRAS IN 1991.

Production statistics

  • Year 1992
    Accuracy Estimate
    Description Kci Production (Estimated) 100000 Metric Tons.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Potassium Potassium 100000mt
  • Year 1993
    Accuracy Estimate
    Description Kci Production (Estimated) 300000 Metric Tons Per Year.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Potassium Potassium 300000mt
  • Year 1994
    Description Kci Production After Upgrade (Projected) 400000 Metric Tons.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Potassium Potassium 400000mt

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Indicated 23300000mt ore
    Demonstrated 23300000mt ore
    Total resources 23300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Potassium K2o 37 wt-pct Potassium Major 1983
  • Type In-situ
    Estimate year 1983
    Indicated 49700000mt ore
    Demonstrated 49700000mt ore
    Total resources 49700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Potassium K2o 40 wt-pct Potassium Major 1983
  • Type In-situ
    Estimate year 1984
    Indicated 28000000mt ore
    Demonstrated 28000000mt ore
    Total resources 28000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Potassium K2o 19.5 wt-pct Potassium Major 1984

Comments on the reserve resource information

  • ESTIMATED INSITU RESOURCES USED IN THE 1984 PROPERTY ECONOMIC EVALUATION. THE DATA WAS PROVIDED BY THE CONTRACTOR.

Workings at the site

  • Type of workings Underground
    Overall depth 500M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method ROOM AND PILLAR 10-34
    Percent Recovery 58
    Hardness of Rock SOFT NONPLASTIC WITH LITTLE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 2
    1st Condition of Workings OPEN
    Capacity 7000
    Capacity Units MT ORE/DAY
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1982

Reference information

Bibliographic references

  • Deposit

    A CONSTRUCAO, NO. 116, JANUARY 1983.

  • Deposit

    CONSTRUCAO PESADA, NO. 148, JUNE 1983.

  • Deposit

    BENAVIDES, VICTOR,"SALINE DEPOSITS OF SOUTH AMERICA",

  • Deposit

    INTERNATIONAL PETROLEUM COMPANY, LTD., LIMA, PERU.

  • Deposit

    WARDLAW, N.C.,"UNUSUAL MARINE EVAPORITES WITH SALTS OF

  • Deposit

    CALCIUM AND MAGNESIUM CHLORIDE IN CRETACEOUS BASINS

  • Deposit

    OF SERGIPE, BRAZIL", ECONOMIC GEOLOGY, VOL. 67, 1972.

  • Deposit

    SZATMARI, CARVALNO AND SIMOES,"A COMPARISON OF

  • Deposit

    EVAPORITE FACIES IN THE LATE PALEOZOIC AMAZON AND

  • Deposit

    THE MIDDLE CRETACEOUS SOUTH ATLANTIC BASINS", ECONOMIC

  • Deposit

    GEOLOGY, VOL. 74, 1979.

  • Deposit

    E&MJ, JAN. 1981.

  • Deposit

    PETROMISA TELEX 16 DEC 83.

  • Deposit

    INDUSTRIAL MINERALS, P. 9 (DEC. 1993).

  • Deposit

    PHOSPHORUS & POTASSIUM, NO. 187, SEP-OCT, 1993, PAGE 7.

  • Reserve-Resource

    INDUSTRIAL MINERALS, "POTASH--HOPE FOR 1984", DECEMBER, 1983

  • Reserve-Resource

    PAGE 41.

  • Reserve-Resource

    SAME REFERENCE AS ABOVE.

  • Reserve-Resource

    E&MJ, "BRAZIL READIES NEW POTASH MINE", DECEMBER, 1984, PAGE

  • Reserve-Resource

    50.

  • Deposit

    PETROMINAS ANNUAL BULLETIN, AUGUST 1981.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-SEP-96 Buckingham, David A. 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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