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  3. Mineral Resource Data System (MRDS)

Pedra Preta

Occurrence in Para, Brazil with commodity Tungsten
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Geologic structures
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10024795
MRDS ID ISM0547
Record type Site
Current site name Pedra Preta
Alternate or previous names Pedra Prata

Geographic coordinates

Geographic coordinates: -50.56581, -7.18136 (WGS84)
Relative position DEPOSIT

Site location context

Political divisions (FIPS codes)

Para(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Para

Comments on the location information

  • (FROM RF1)

Commodities

Commodity Importance
Tungsten Critical Primary

Comments on the commodity information

  • TUNGSTEN

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock

Nearby scientific data

(1) -50.56581, -7.18136
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Economic information

Geologic structures

Type of structure Regional
Structure description Contact Aureole Of Proterozoic Granite Intrusion

Comments on the geologic information

  • ; WLFM + SLPD + QRTZ; WOLFRAMITE CONCENTRATES CURRENTLY PRODUCED MAINLY FROM WEATHERED QUARTZ - W OLFRAMITE VEINS AND FROM RELATED COLLUVIAL AND ELUVIAL MATERIAL.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1985
Year of last production 1982

Ownership information

  • Type Owner
    Owner Docegeo (Subsidiary Of Companhia Vale Do Rio Doce)

Comments on the production information

  • SMALL; PRODUCTION LIMITED TO SURFACE MINING BY "GARIMPEIROS".

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. (). DEVELOPMENT(PRODUCTION AT RATE OF 100 TONNES CONCENTRATE PER YEAR IS BEING CONSIDERED.);

Reference information

Bibliographic references

  • Deposit

    WILLIG,C.D. AND DELGADEO,J., 1985, SOUTH AMERICA AS A SOURCE OF TUNGSTEN, I N MPR PUPBLISHING SERVICES LTD., TUNGSTEN: 1985, PROCEEDINGS OF THE THIRD INTER NATIONAL TUNGSTEN SYMPOSIUM, MADRID, MAY 1985, P. 59-85.

  • Deposit

    CORDEIRO,A.A.C., ALVES,C.A., FONSECA,L.R., NASCIMENTO,J.A.S., AZEVEDO,I.C. AND SANTOS,F.F., 1984, PESQUISA GEOLOGICA DA JAZIDA DE WOLFRAMITA DA PEDRA PRET A RIO MARIA - PA. II SIMPOSIUM AMAZONICA - ANAIS, MANAUS - AM8-12 ABRIL: 1984, P. 375-379.

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.).
Deposit Discovery Year: 1980S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1986 Sinclair, W.David Geological Survey of Canada

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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