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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Alvo Mari

Prospect in Bahia, 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. Ore body information
  11. Economic information about the deposit and operations
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10065493
MRDS ID TC40825
Record type Site
Current site name Alvo Mari
Alternate or previous names Fazenda Maria Preta, Ore Bodies C1, C2, C3, C4

Geographic coordinates

Geographic coordinates: -39.30697, -10.75366 (WGS84)
Location accuracy 5000(meters)
Relative position 23 KM SE OF NORDESTINA; 250 KM NW OF SALVADOR.

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
Gold Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Quartz Gangue

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 Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock

Nearby scientific data

(1) -39.30697, -10.75366
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Economic information

Ore body information

  • Name C-1
    Strike NE}N10E}N10E}N15E
    Dip 45NW}60W}60W}50W
    Plunge direction NNW
    Thickness 8.25M
    Length 136M
    Width 60M
  • Name C-2
    Strike NE}N10E}N10E}N15E
    Dip 45NW}60W}60W}50W
    Plunge direction NNW
    Thickness 2.3M
    Length 126M
    Width 60M
  • Name C-3
    Strike NE}N10E}N10E}N15E
    Dip 45NW}60W}60W}50W
    Thickness 4.3M
    Length 56M
    Width 65M
  • Name C-4
    Strike NE}N10E}N10E}N15E
    Dip 45NW}60W}60W}50W
    Thickness 4.2M
    Length 176M

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Comments on the production information

  • PLANNED AU PRODUCTION IS 700 KG/YEAR.

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Total resources 19456000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 6.73 g/mt Gold Major 1987

Comments on the reserve resource information

  • OPEN PIT ORE IN C1, C2, C3, AND C4.

Reference information

Bibliographic references

  • Deposit

    GITEW/SUMEN-CVRD, 1988, JAZIDA DE OURO DA FAZENDA MARIA PRETA, SANTA LUZ BAHIA, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS. C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. III, P. 431-461

  • Other Database

    CIMRI

  • Production

    GITEW/SUMEN-CURD (1988).

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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