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  3. Mineral Resource Data System (MRDS)

Mara Rosa Gold Deposit

Producer in Goias, 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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Ownership information
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10065491
MRDS ID TC40823
Record type Site
Current site name Mara Rosa Gold Deposit
Alternate or previous names Jazida De Mara Rosa

Geographic coordinates

Geographic coordinates: -49.1777, -13.90967 (WGS84)
Elevation 450
Location accuracy 10000(meters)
Relative position ABOUT 60 KM SOUTH OF PORANGATU, 8.8 KM NORTH OF MARA ROSA.

Site location context

Political divisions (FIPS codes)

Goias(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Goias

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • AU IS LESS THAN 10 MICRONS IN DIAMETER.

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Pyrrhotite Ore
Biotite Gangue
Calcite Gangue
Microcline Gangue
Muscovite Gangue

Analytical data

Result AU VARIES IN ORE ZONE FROM 3-30 G/MT.

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Araras Unit;Posse Unit
    Rock description Araras Unit;Posse Unit
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Posse Unit
    Rock description Posse Unit

Nearby scientific data

(1) -49.1777, -13.90967
ListMap

Economic information

Ore body information

  • Thickness 15M
    Length 1000M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1982
Discoverer Mineracao Colorado Limitada

Ownership information

  • Type Owner-Operator
    Owner Mineracao Colorado Limitada
    First year 1981

Reserves and resources

  • Type In-situ
    Estimate year 1986
    Total resources 2914368000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.2 g/mt Gold Major 1986

Comments on the reserve resource information

  • ORE (1) MEASURED OXIDIZED, ALTERED RESERVE WITH 0.93 G/MT AU CUTOFF GRADE; ORE (2) INDICATED OXIDIZED, ALTERED RESERVE WITH 0.93 G/MT AU; ORE (3) INDICATED SULFIDE RESERVE; ORE (4) INFERRED SULFIDE RESERVE.

Comments on development

  • EXPLORATION SHAFT PROGRAM EXPECTED TO START IN JUNE 1986.

Reference information

Bibliographic references

  • Deposit

    ANGEIRAS, A.G., DA COSTA, L.A.M., AND DOS SANTOS, R.C., 1988, DEPOSITO DE OURO MARA ROSA, GOIAS, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS., C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. 11, P

  • Other Database

    CIMRI

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-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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