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Boquira Deposit

Producer in Bahia, Brazil with commodities Lead, Zinc
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10069034
MRDS ID W002316
Record type Site
Current site name Boquira Deposit
Alternate or previous names Ore Bodies Or Zones: Sobrado, Pelado, Cruzeiro, Maranhao, Morro Pelado, Paredao, S.E. of Peladinho.

Geographic coordinates

Geographic coordinates: -42.7323, -12.81442 (WGS84)
Elevation 600
Relative position 30 KM NORTH OF MACAUBAS, 500 KM WEST OF SALVADOR.

Site location context

Political divisions (FIPS codes)

Bahia(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Bahia

Comments on the location information

  • IN VALE DO PARAMIRIM, TRENDING NW-SE. ABOUT 983 KM WNW OF RIO DE JANEIRO.

Commodities

Commodity Importance
Lead Primary
Zinc Critical Secondary

Materials information

Materials Type of material
Anglesite Ore
Bornite Ore
Gahnite Ore
Galena Ore
Hemimorphite Ore
Hydrozincite Ore
Malachite Ore
Pyrite Ore
Smithsonite Ore
Sphalerite Ore
Limonite Gangue
Pyromorphite Gangue
Quartz Gangue

Analytical data

Result CD UP TO 3000 PPM, AG UP TO 120 G/T, AU UP TO 0.6 PPM, ZN UP TO 10 PPM. 8 CHANNEL SAMPLES: 33.3, 10.5, 7.3, 4.0, 17.8, 17.3, 23.5, 46.0% PB.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Syenite
    Stratigraphic age (youngest) Mesoarchean
    Stratigraphic age (youngest) Mesoarchean
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Espinhaco Supergrouip
    Rock description Espinhaco Supergrouip
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Boquira Formation, Paramirim Complex
    Rock description Boquira Formation, Paramirim Complex
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Iron Formation

Nearby scientific data

(1) -42.7323, -12.81442
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Tight Folds.

Ore body information

  • Name CRUZEIRO
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Thickness 2M
    Length 1400M
    Depth to bottom 460M
  • Name SOBRADO PRINCIPAL
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Thickness 0.3M
    Length 650M
    Depth to bottom 180M
  • Name SABRADO SUL
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 320M
    Depth to bottom 60M
  • Name SOBRADO NORTE
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 100M
    Depth to bottom 110M
  • Name PELADO EAST
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 200M
    Depth to bottom 340M
  • Name PELADO PRINCIPAL
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 1000M
    Depth to bottom 340M
  • Name MARANHAO
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 110M
  • Name PAREDAO
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 130M
  • Name PELADINHO
    General form BEDS, TABULAR
    Dip }}}}}}}}
    Length 140M

Controls for ore emplacement

  • Fault Surfaces Border Mineralized Veins.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1952
Discoverer Prospectors
Year of first production 1957

Mining district

District name Boquira District

Ownership information

  • Type Operator
    Owner Mineracao Boquira S/A.
  • Type Owner
    Owner Acumuladores Prest-O-Lite
    First year 1957

Production statistics

  • Year 1985
    Period 1959-1985
    Material ORE (2)
    Accuracy Accurate
    Description Cp_Grade: ^45% Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Lead Lead 45wt-pct
  • Year 1985
    Period 1979-1985
    Material ORE (2)
    Accuracy Accurate
    Description Cp_Grade: ^8.85% Pb, 1.43% Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Zinc Zinc 1wt-pct
    Major Ore Lead Lead 9wt-pct

Comments on the production information

  • (1) = SOBRADO, (2) = PELADO, (3) = CRUZEIRO, (4) = MARANHAO, (5) = BOQUIRA TOTAL, ZN WAS NOT RECOVERED IN 1959-1975. 1956 MINING WAS FROM OPEN PITS ON MOTTO PELADO; PRODUCTION VARIED FROM 100 TO 2000 TONS PER MONTH.

Reserves and resources

  • Type In-situ
    Estimate year 1985
    Total resources 2195000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 9 wt-pct Lead Major 1985
  • Type In-situ
    Estimate year 1958
    Total resources 14000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 20 wt-pct Lead Major 1958
    Zinc Zn 5 wt-pct Zinc Minor 1958

Comments on the reserve resource information

  • THE ABOVE AMOUNT IS THE SUM OF 3 CLASSES: PROVED, 845,000 TONS AT 9.7% PB; PROBABLE 1,000,000 TONS AT 9.3% PB; POSSIBLE, 350,000 TONS AT 9.0% PB. THESE RESERVES CONTAIN AN AVERAGE OF 2.2% ZN. ORE (1), INDICATED IN MORRO PELADO; ORE (1)-(7); INFERRED ORE MT PER METER DEPTH. ORE (2), MORRO PELADO; ORE (3), CRUZEIRO; ORE (4), PAREDAO; ORE (5), SOBRADO; ORE (6), PELADINHO; ORE (7) SE OF PELADINHO.

Workings at the site

  • Type of workings Underground
    Overall depth 340M

Comments on the workings information

  • ORE DEPOSIT MADE OF 3 PARALLEL NORTH STRIKING STEEPLY DIPPING VEINS THAT ARE PARALLEL TO HOST ROCK. OPEN PIT, CROSS CUT ADIT (71 M), 130 M DRIFT ON VEIN ON 2 LEVELS (1958).

Reference information

Bibliographic references

  • Analytical Data

    JOHNSON (1963).

  • Deposit

    R.H. NAGELL AND M.G. WHITE, 1974, LEAD-ZINC RESOURCES IN BRAZIL

  • Deposit

    ESPOURTEILLE, F., AND FLEISCHER, R., 1988, MINA DE CHUMBO DE BOQUIRA, BAHIA, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS. C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. III, P. 91-99.

  • Deposit

    JOHNSON, R.F., 1962, LEAD-ZINC DEPOSITS OF THE BOQUIRA DISTRICT, STATE OF BAHIA, BRAZIL: U.S. GEOLOGICAL SURVEY BULLETIN 1110-A, 33 P.

  • Production

    ESPOURTEILLE AND FLEISCHER (1988).

General comments

Subject category Comment text
Deposit Discovery Year: 1952-1953
Deposit THE ORE BEARING LENGTH IS 1000 METERS ON THE CRUZEIRO VEIN, 1200 METERS ON THE SOBRADO VEIN, AND 700 METERS ON THE PELADO VEIN. GRANITIC INTRUSIVES AND DIKES OF RHYOLITE, DACITE, AND TRACHYTE CUT ACROSS THE BOQUIRA GROUP.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1974 Warfle, Thomas M. U.S. Geological Survey
Updater 01-AUG-1994 Page, Norman J. U.S. Geological Survey
Updater 15-JUL-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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