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Salobo 3a

Occurrence in Para, Brazil with commodities Copper, Gold, Silver, Molybdenum, Iron
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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. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10060665
MRDS ID TC30082
Record type Site
Current site name Salobo 3a
Alternate or previous names Cinzento Salobo

Geographic coordinates

Geographic coordinates: -50.44914, -5.74811 (WGS84)

Site location context

Political divisions (FIPS codes)

Para(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Para

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary
Molybdenum Secondary
Iron Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Biotite Gangue
Garnet Gangue
Magnetite Gangue
Olivine Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Sao Salobo Formation
    Rock description Sao Salobo Formation
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoarchean

Nearby scientific data

(1) -50.44914, -5.74811
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Economic information

Comments on the geologic information

  • SALOBO 3A IS ONE OF THE CU ANOMALIES ALONG 70 KM STRIKE LENGTH IN N70W DIRECTION ON THE NORTH FLANK OF THE CARAJAS SYNCLINORIUM; THE IRON RICH FACIES IS 30 TO 300M THICK. SEHISTS ARE 200-500M THICK AND CONTAIN MOST OF THE CU CONC/ENRICH: OXIDIZED TO 25-75M.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1977
Discoverer Docegeo By Geochemical Anomaly Of 2700 Ppm Cu

Comments on the reserve resource information

  • TOTAL RESERVE (1), ORE (2) N.F. FARIAS AND R. SAVERESSIG (1982) BASE ON DRILLING INCLUDES 469,947,000 TONNES AT 1.28%CU, 569,723,000 TONNES AT 0.48% CU, AND 97,430,000 TONNES AT 0.77% IN OXIDIZED ZONE. A 0.8% CU CUT OFF GRADE WAS USED IN TWO TONNAGE CALCULATIONS.

Comments on development

  • BY NOV. 1981 WERE 28000M OF DRILLING

Reference information

Bibliographic references

  • Deposit

    CESAR, P. DE A.B., 1984, PRINCIPAIS DEPOSITOS MINERAIS: CONCEITOS, METODOLOGIA, E LISTAGEM, CAPITULO IX, IN GEOLOGIA DO BRASIL, EDS., C. SCHOBBENHAUS, D. DE A. CAMPOS, G.R. DERZE, AND H.E. ASMUS: DEPARTAMENTO NACIONAL DA PRODUCAO MINERAL, PP. 359-419.

  • Deposit

    FARIAS, N.F., AND SAUERESSIG, 1982, JAZIDA DE COBRE SALOBO 3A IN PROVINCIA MINERAL DE CARAJAS BRAZIL, ANEXO AOS ANAIS DO I SIMPOSIO DE GEOLOGIA DA AMAZONIA: SOCIEDADE BRASILEIRA DE GEOLOGIA NUCLEO NORTE BELEM, MAY 1982, PP. 65-73.

  • Other Database

    CIMRI

  • Reserve-Resource

    CESAR (1984)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1992 Norman J Page U.S. Geological Survey

Beyond USGS

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

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