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Rui Barbosa Graphite

Prospect in Bahia, Brazil with commodity Graphite
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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. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10069070
MRDS ID W002368
Record type Site
Current site name Rui Barbosa Graphite

Geographic coordinates

Geographic coordinates: -40.48226, -12.21444 (WGS84)

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
Graphite Critical Primary

Materials information

Materials Type of material
Graphite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -40.48226, -12.21444
ListMap

Economic information

Comments on the geologic information

  • ORE IN SHEAR ZONE TRENDING NORTH-SOUTH AND DIPPING 50 E ABOUT 20 METERS WIDE WHERE EXPOSED. ONE SMALL PIT ABOUT HALF A METER DEEP IS THE ONLY EXPLORATION. GRAPHITE QUALITY IS GOOD, MUCH GRAPHITE AND LITTLE CLAY OR QUARTZ. FURTHER EXPLORATION, SAMPLING AND MAPPING IS RECOMMENDED. HAND AUGER DRILLING MIGHT EXPOSE GRAPHITIC MATERIAL BENEATH SOIL COVER. THIS LOOKS PROMISING AND IS ONLY 100 METERS FROM AN ALL-WEATHER ROAD. THE OWNER SAYS THAT IN OCTOBER THE BRUSH IS CLEAR FOR BEST VISIBILITY. THE DEPOSIT IS LOCATED IN FAZENDA SONHEN, ABOUT 9 KM FROM RUI BARBOSA. THE GRAPHITE ZONE IS CUT BY VEINLETS OF MILKY WHITE AND SMOKY QUARTZ WHICH CONTAIN PYRITE. THIS OCCURRENCE IS SIMILAR TO THE SHEAR ZONE IN MARLU GOLD MINING AREA IN GHANA WHERE GOLD WAS COMMERCIALLY PRODUCED. LESS THAN ONE KM FROM THE GRAPHITE DEPOSIT, A SECTION OF CARBONATE ROCKS (LIMESTONE AND MARBLE) AND SILICIFIED LIMESTONE ABOUT 100 M THICK IS EXPOSED AT A ROAD CUT. THE LIMESTONE IS WEDGED BETWEEN TWO FAULTS AND IS CUT BY
  • SEVERAL QUARTZ VEINS. THE LIMESTONE IS GREEN IN SEVERAL PLACES. THE FAULT ON THE EAST SIDE OF THE CARBONATE SECTION STRIKES ABOUT N10E AND CONSISTS OF SEVERAL FAULTS AND FAULT GOUGES THAT HAVE 40-60 CM OF GRAPHITE.

Economic information about the deposit and operations

Development status Prospect
Commodity type Non-metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    MONTHLY REPORT, BRAZIL PROJECT, JAN. 1969, HEDLUND, D.C.; FEB. 1969, GOUDARZI, G.H.

  • Deposit

    MONTHLY REPORT, BRAZIL PROJECT, APRIL, 1969, POMERENE, J.B.

  • Deposit

    CESAR, P. DE A.B., 1984, PRINCIPAIS DEPOSITOS MINERAIS: CONCEITOS, METODOLOGIA E LISTAGEM, CAPITULO IX, IN SCHOBBENHAUS, C., CAMPOS, D. DE A., DERZE, G.R., ASMUS, H.E., EDS., GEOLOGIA DO BRASIL: DEPARTAMENTO NACIONAL DA PRODUCAO MINERAL, P. 359-419.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit THIS RECORD CONTAINS INFORMATION FROM DUPLICATE RECORD W002367, WHICH HAS BEEN DELETED FROM MRDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Warfle, Thomas M. U.S. Geological Survey
Updater 01-NOV-1992 Orris, Greta 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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