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  3. Mineral Resource Data System (MRDS)

Sao Francisco

Producer in Rio Grande Do Norte, Brazil with commodity Gold
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Reserves and resources
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10061735
MRDS ID TC34684
Record type Site
Current site name Sao Francisco
Alternate or previous names Fazenda Sao Francisco, Mina Sao Francisco, Mina Morro Pelado, Veins: Sao Francisco, Americano

Geographic coordinates

Geographic coordinates: -36.28221, -6.18139 (WGS84)

Site location context

Political divisions (FIPS codes)

Rio Grande Do Norte(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Rio Grande Do Norte

Comments on the location information

  • MINA SAO FRANCISCO ABOUT 200 M NE OF MINA MORRO PELADO AND BOTH ARE ON THE SAME VEIN SYSTEM.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Molybdenite Ore

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Serido Formation
    Rock description Serido Formation
    Stratigraphic age (youngest) Paleoproterozoic
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) -36.28221, -6.18139
ListMap

Economic information

Comments on the geologic information

  • FOLIATION TRENDS N30E DIPPING 35-50SE, MINOR FOLD AXES PLUNGE 12SW.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1942
Discoverer Prospectors
Year of first production 1942

Comments on the production information

  • PLAN TO PRODUCE 150,000 MT/DAY.

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Total resources 70944000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.364 g/mt Gold Major 1987
  • Type In-situ
    Estimate year 1987
    Total resources 87152000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.75 g/mt Gold Major 1987
  • Type In-situ
    Estimate year 1987
    Total resources 397646000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.131 g/mt Gold Major 1987
  • Type In-situ
    Estimate year 1987
    Total resources 75000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.9 g/mt Gold Major 1987

Comments on the reserve resource information

  • A= WEATHERED; B = SULFIDE IN MORRO PELADO OPEN PIT AREA; ORE (1) = MEASURED; ORE (2A) = INDICATED; ORE (1B) = MEASURED; ORE (2B) = INDICATED; ORE (T) = TOTAL IN OPEN PIT; ORE (2) = ORE IN MINA SAO FRANCISCO AREA; ORE (3) = ORE SOUTH OF OPEN PIT AREA IN MORRO PELADA.

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

    DE FERNAN, A., 1988, MINA DE OURO DE SAO FRANCISCO, CURRAIS NOVAS, RIO GRANDE DO NORTE, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS. C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. III, P. 589-595.

  • Other Database

    CIMRI

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1992 Page, Norman J. U.S. Geological Survey
Updater 18-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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