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  3. Mineral Resource Data System (MRDS)

Cercado Velho Copper Deposit

Occurrence in Bahia, 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. 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. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10069038
MRDS ID W002320
Record type Site
Current site name Cercado Velho Copper Deposit

Geographic coordinates

Geographic coordinates: -39.78226, -9.51456 (WGS84)

Site location context

Political divisions (FIPS codes)

Bahia(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Bahia

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • DIORITE, GABBRO, AMPHIBOLE GNEISS, SERPENTINE, AMPHIBOLITES AND ANATECTIC GRANITE ARE MINOR MATERIALS PRESENT, MAKING A HETEROGENEOUS BASIC COMPLEX

Materials information

Materials Type of material
Bornite Gangue
Chalcopyrite Gangue
Pyrite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Granite
    Rock description Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Poco De Fora, Leucocratic Gneiss;Poco De Fora, Charnockitic Gneiss
    Rock description Poco De Fora, Leucocratic Gneiss;Poco De Fora, Charnockitic Gneiss

Nearby scientific data

(1) -39.78226, -9.51456
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Economic information

Geologic structures

Type of structure Local
Structure description West Side Contact Of Basic Complex Is A Sheared Fault Zone

Ore body information

  • General form TABULAR
    Strike N 15 DEG E
    Dip E
    Length 800M
    Width 40M

Controls for ore emplacement

  • Northeasterly Trending Complex Has Steep Easterly Dips Concordant With Enclosing Hostrock

Comments on the geologic information

  • THE NORITES AND PYROXENITES WITHIN THE COMPLEX CONTAIN THE MAJOR COPPER MINERALIZATION

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1925

Reference information

Bibliographic references

  • Deposit

    WRITTEN COMMUNICATION FROM W. MARHOLZ

General comments

Subject category Comment text
Deposit A 15 METER THICK COPPER OXIDE MINERAL ZONE IS NEAR THE SURFACE IN THE NORITE. THE SULPHIDES ARE LOCATED IN THE SHEARED FAULT CONTACT ON THE WEST SIDE OF THE COMPLEX.
Deposit Discovery Year: EARLY TWENTIETH CENTURY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1974 Warfle, Thomas M. U.S. Geological Survey

Beyond USGS

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

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