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  3. Mineral Resource Data System (MRDS)

Santa Maria

Occurrence in Rio Grande Do Sul, Brazil with commodities Lead, Zinc, Silver
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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. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10061809
MRDS ID TC34774
Record type Site
Current site name Santa Maria
Alternate or previous names Fazenda Santa Maria, Isa, Daniela Occurrence

Geographic coordinates

Geographic coordinates: -53.48796, -30.9807 (WGS84)
Relative position 3 KM SW OF MINAS DO CAMAQUA.

Site location context

Political divisions (FIPS codes)

Rio Grande Do Sul(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Rio Grande Do Sul

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary
Silver Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Copper Ore
Galena Ore
Malachite Ore
Pyrite Ore
Silver Ore
Sphalerite Ore
Albite Gangue
Ankerite Gangue
Calcite Gangue
Hematite Gangue
Illite Gangue
Quartz Gangue

Analytical data

Result BADI AND GONZALEZ (1988) CONTAINS CU, PB, ZN SOIL GEOCHEMICAL MAPS.

Mineral occurrence model information

Model code 196
USGS model code 30a
Deposit model name Sandstone-hosted Pb-Zn
Mark3 model number 76

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Mangueirao Member, Arroio Dos Nobres Formation;Hilario Member, Crespos Formation, Bom Jardin Group;Rodelo Velho Member, Santa Barbara Formation, Camaqua Group;Guaritas Foration, Camaqua Group
    Rock description Mangueirao Member, Arroio Dos Nobres Formation;Hilario Member, Crespos Formation, Bom Jardin Group;Rodelo Velho Member, Santa Barbara Formation, Camaqua Group;Guaritas Foration, Camaqua Group
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Early Ordovician
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Vargas Member, Arroio Dos Nobres Formation
    Rock description Vargas Member, Arroio Dos Nobres Formation

Nearby scientific data

(1) -53.48796, -30.9807
ListMap

Economic information

Ore body information

  • Thickness 100M
    Length 1000M
    Width 200M

Comments on the geologic information

  • BEDDED ROCKS STRIKING N-NE AND DIPPING 70-75SW. PROBABLY REPRESENTS A MOLUSSE SEQUENCE. VARGAS MEMBER IS ABOUT 600 M THICK AND REPRESENTS DELTAIC SECTION THAT LATERALLY GRADES INTO AND VERTICALLY PROGRADES ON FINE-GRAINED DEEPWATER RHYTHMITE OF THE MANGUEIRAO MEMBER. AGE BASED ON RB/SR AGE (525 MA) OF RHYOLITES FROM ACAMPAMENTO VELHO MEMBER AND K/AR AGE (495 +/0 20 MA) ON ANDESITE IN THE HILARIO MEMBER.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1978
Discoverer Companhia Brasileira Do Cobre.

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Total resources 46475147000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 1.39 wt-pct Lead Major 1982
    Zinc Zn 0.91 wt-pct Zinc Major 1982

Comments on the reserve resource information

  • TOTAL RESERVE. ORE (1) RESERVES IN ARE A 1; ORE (2) RESERVED IN AREA (2); ORE (3) RESERVE IN AREA (3); ORE (4) RESERVE OF (1) + (2) + (3). ORE (5) RESERVE IN DESIGNED OPEN PIT IN AREA 3 WITH STRIPPING RATIO OF 4.08 TO 1.

Comments on development

  • DISCOVERED BY GEOCHEMISTRY AND DRILLING.

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

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit DEPOSIT APPEARS TO BE ZONED.

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.

Maps centered on this site