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Camaqua

Past Producer in Rio Grande Do Sul, Brazil with commodity Copper
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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. Ownership information
  12. Reserves and resources
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10207127
MAS/MILS ID 3510370003
Record type Site
Current site name Camaqua
Alternate or previous names Cacapava Do Sul, Lavras Do Sul

Geographic coordinates

Point of reference Claim
Geographic coordinates: -53.41577, -30.91407 (WGS84)
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Rio Grande Do Sul(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Rio Grande Do Sul

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Bornite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Quartz Unknown

Nearby scientific data

Claim (1) -53.41577, -30.91407
ListMap

Economic information

Ore body information

  • Strike N60E
    Dip 40W
    Thickness 120M
    Length 250M
    Width 150M
    Depth to top 6.5M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 MASSIVE
    Type of Orebody #2 STOCKWORK
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N60E:40W
    Minimum Depth to Top 5
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 810305
  • Thickness 6M
    Length 500M
    Width 500M
    Depth to top 130M
    Field Value
    MAS Matrix # 2
    MAS Column # 2
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 STOCKWORK
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 130
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 810305
  • Area 700HA
    Field Value
    Total Surface Area (HA) 700
    Date of Last Modification 910418

Comments on the geologic information

  • GEOLOGIC AGES OF FORMATIONS, DEFORMATION AND MINERALIZATION ARE NOT KNOWN.
  • GEOLOGIC INFO. IS SCANT. MUCH OF DATA (ESPECIALLY DIMENSIONS) ARE ESTIMATED.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1888
Year of first production 1982
Milling method Flotation

Mining district

District name Camaqua

Ownership information

  • Type Owner
    Owner Fibase(Subs. Of National Bank Of Development).
    Interest 90
    Home office Brazil
    Year 1980
  • Type Owner
    Owner State Of Rio Grande Do Sul
    Interest 5
    Home office Brazil
    Year 1980
  • Type Owner
    Owner Cia Brasilia De Zinco
    Interest 5
    Home office Brazil
    Year 1980
  • Type Operator
    Owner Cia Brasileira De Cobre
    Home office Brazil
    Year 1980

Comments on the production information

  • DEPOSIT IN SPORADIC PRODUCTION SINCE 1888. IN 1942 CIA. BRAZILEIRA DE COBRE FORMED(1/3 LAMINACAO NACIONAL DO METAIS AND 2/3 PIGNATARI GROUP. MAJOR UG EXPL. PROGRAM 1971-1972. IN 1973 OPERATION WAS A SMALL (400,000 MTPY) UG OPERATION WITH AN OLD SMELTER ON-SITE. OPERATION SHUT-DOWN IN 1975 AND PROPERTY PURCHASED BY GOVT.(THRU FIBASE) IN 1976 FROM PIGNATARI GROUP. NEW SURF/UG OPER. EXPECTED IN PROD.BY BEGINNING OF 1982.

Reserves and resources

  • Type In-situ
    Estimate year 1986
    Measured 2740000mt ore
    Indicated 7073000mt ore
    Demonstrated 9813000mt ore
    Inferred 12675000mt ore
    Total resources 22488000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.93 wt-pct Copper Major 1986
  • Type In-situ
    Estimate year 1987
    Measured 1968000mt ore
    Indicated 406000mt ore
    Demonstrated 2374000mt ore
    Inferred 1881000mt ore
    Total resources 4255000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.1 wt-pct Copper Major 1987
  • Type In-situ
    Estimate year 1987
    Measured 5520000mt ore
    Indicated 6665000mt ore
    Demonstrated 12185000mt ore
    Inferred 11909000mt ore
    Total resources 24094000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.71 wt-pct Copper Major 1987
  • Type In-situ
    Estimate year 1987
    Demonstrated 14559000mt ore
    Inferred 13790000mt ore
    Total resources 28349000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.77 wt-pct Copper Major 1987

Comments on the reserve resource information

  • OVER THE LAST 5 OR 6 YEARS THERE HAVE BEEN MANY DIFFERENT RESERVE FIGURES PUBLISHED FOR CAMAQUA THE FOLLOWING ARE SOME EXAMPLES: E/MJ JULY 1978: 12,000,000 MT AT 0.9 TO 1.4% CU MINING MAG., 1978: 30,000,000 MT A PRIVATE SOURCE GIVES 31,600,000 MT AT 0.9% CU. GOLDER REPORTS RESERVES AT:7,104,000 MT AT 0.62-1.15%CU (PROVEN), 15,940,000 MT AT SAME GRADE (INDICATED) AND 17,476,000 MT AT SAME GRADE (INFERRED)- DO NOT KNOW IF CUMMULATIVE OR NOT.
  • BECAUSE OF VARIETY OF PUBL.ESTS..&BECAUSE NONE GIVE A BREAKDOWN FOR SURF.& UG ORE THE EVALUATOR HAS ASSUMED A RECOVERABLE RESERVE OF 800,000 MTPY X 15 YRS. FOR SURFACE MINE & 600,000 MTPY X 15 YRS. FOR UG RESERVE (ASSUME AT LEAST THIS MUCH RECOVERABLE-21,000,000 MT-OUT OF TOTAL IN-SITU ORE REPORTED).ACTUAL IN-SITU UG ORE= 6,930,000 MT ASSUMING A 23% DILUTION FOR MILL FEED.
  • ANUARIO MINERAL BRASILEIRO 1988, P179.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Percent Waste Rock 60
    Avg. Overburden Thickness 6.5
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 45
    Capacity 5000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 400
    Units of Production $/MT ORE
    Operating Days per Year 310
    Operating Shifts per Day 2
    Year of Information 1986
  • Type of workings Underground
    Length 3000M
    Overall depth 350M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OTHER OPEN STOPE METHODS
    Percent Waste Rock 0
    Percent Recovery 85
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 2
    1st Condition of Workings OPEN
    Capacity 2500
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Operating Days per Year 310
    Operating Shifts per Day 2
    Year of Information 1980

Reference information

Bibliographic references

  • Reserve-Resource

    ANUARIO MINERAL BRASILEIRO, 1987, P 179.

  • Reserve-Resource

    ANUARIO MINERAL BRASILEIRO, 1988, P 179.

  • Deposit

    STAFF, ENGINEERING AND MINING JOURNAL, JAN. 1979, P. 97.

  • Deposit

    STAFF, 1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL

  • Deposit

    DIRECTORY OF MINING, 1978, P. 274.

  • Deposit

    ANON., BRAZIL, MINING ANNUAL REVIEW-1978, MINING JOURNAL,

  • Deposit

    LONDON, 1978, P. 382.

  • Deposit

    LEFOND, S. J., BRAZILIAN MINING: RELAXED GOV'T ATTITUDES

  • Deposit

    PAVE THE WAY FOR EXPLOITING CRITICAL RESOURCES, MINING

  • Deposit

    ENGINEERING, NOV. 1973, P. 40.

  • Deposit

    BRAZIL SPURS DOMESTIC COPPER PRODUCTION TO CUT RELIANCE ON

  • Deposit

    IMPORTS, ENGINEERING AND MINING JOURNAL, JULY 1978, P.

  • Deposit

    23, 27.

  • Deposit

    DMA SERIES 1301, SHEET SH22, SCALE 1:1,000,000

  • Deposit

    GOLDER REPORT, MAR. 1980.

  • Deposit

    E/MJ, JAN. 1979, P.97

  • Deposit

    MINING MAGAZINE, ANNUAL REVIEW, JUNE 1978, P.382.

  • Deposit

    RTZ COST ANALYSIS SYSTEM, 1973.

  • Deposit

    CONFIDENTIAL REPORT, 1981.

  • Deposit

    LATIN AMERICAN MINING LETTER, 4/3/89, VOL 8, NO.6, P 6.

  • Deposit

    E/MJ, 1/90, P 111.

  • Deposit

    MINING JOURNAL, 6/29/89, P. 436.

  • Deposit

    MINING JOURNAL, 12/9/83, P. 421.

  • Deposit

    LATIN AMERICAN MINING LETTER, 2/10/92, VOL 11, NO 1, P. 4.

  • Deposit

    LATIN AMERICAN MINING LETTER, 11/14/92, P. 3.

  • Deposit

    LATIN AMERICAN MINING LETTER, 5/31/93, VOL 12, NO 8, P. 3.

General comments

Subject category Comment text
Deposit DEPOSIT LOCATED 43 KM SSE OF CITY OF CACAPAVA DO SUL. DEVELOPMENT BEGUN 1979, EXPECTED IN PROD. BY 1982. AS OF 11/92, RESERVES WERE REPORTED TO BE NEARLY EXHAUSTED.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-1997 Porter, Kenneth E. 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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