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  3. Mineral Resource Data System (MRDS)

Ouro Fino Gold Deposit

Prospect in Minas Gerais, 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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10064774
MRDS ID TC39264
Record type Site
Current site name Ouro Fino Gold Deposit

Geographic coordinates

Geographic coordinates: -43.23757, -16.06623 (WGS84)
Location accuracy 2000(meters)
Relative position ABOUT 12 KM NE OF MONTES CLAROS

Site location context

Political divisions (FIPS codes)

Minas Gerais(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Minas Gerais

Comments on the location information

  • E OF THE PIRANGA RANGE AND SE OF THE TOWN RIACHO DOS MACHADOS

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • GOLD IS FINE (400 MESH) DISSEMINATED AND ASSOCIATED WITH QUARTZ, ARSENOPYRITE, PYRITE, PYRRHOTITE

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Chlorite Gangue
Muscovite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Al-Rich Schists Replaced By Chlorite-Muscovite In Intermediate Stage And Quartz-Muscovite In Advanced Stage

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Ourofino Sequence;Ourofino Sequence;Ourofino Sequence
    Rock description Ourofino Sequence;Ourofino Sequence;Ourofino Sequence

Nearby scientific data

(1) -43.23757, -16.06623
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Ductile Shear Zone With Lineation N140e, 38se Defined By Fold Axes, Cleavage Intersection, And Elongate Minerals

Ore body information

  • Name OURO FINO GOLD DEPOSIT
    Strike N20E
    Dip 45SE
    Thickness 40M
    Length 1700M

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Rio Doce Geologia E Mineracao S.A. And Companhia Vale Do Rio Doce

Ownership information

  • Type Operator
    Owner Rio Doce Geologia Y Mineracao S. A. (Docegeo) And Companhia Vale Do Rio Doce (Cvrd)

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Total resources 267000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.48 g/mt Gold Major 1991

Comments on the reserve resource information

  • OPEN PIT RESERVES FOR HEAP LEACHING, IN 1991 WAS UNDER DEVELOPMENT

Reference information

Bibliographic references

  • Deposit

    FORSECA, E., GUIMARAES, P.J., DUTRA LEAL, E., AND MEDEIROS SILVA, H., 1991, THE OURO FINO DEPOSIT, MINAS GERAIS, BRAZIL, IN BRAZIL GOLD '91, ED. E.A. LADEIRA: BALKEMA, ROTTERDAM, P. 499-505

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit GOLD MINERALIZATION BROADLY CONFORMABLE WITH MYLONITIC FOLIATION. INDIVIDUAL MINERALIZED BODIES (GREATER THAN 2 PPM) ARE DISCONTINUOUS VARYING FROM 20-150 M IN LENGTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-93 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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