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Alcobaca

Plant in Bahia, Brazil with commodities REE, Titanium, Zirconium
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Reserves and resources
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10304369
MAS/MILS ID 3510090020
Record type Site
Current site name Alcobaca

Geographic coordinates

Point of reference Claim
Geographic coordinates: -39.33218, -17.49755 (WGS84)
Elevation 10
Location accuracy 1000(meters)

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
REE Critical Primary
Titanium Critical Secondary
Zirconium Critical Secondary

Materials information

Materials Type of material
Ilmenite Unknown
Monazite Unknown
Rutile Unknown
Zircon Unknown

Nearby scientific data

Claim (1) -39.33218, -17.49755
ListMap

Economic information

Ore body information

  • Thickness 1.75M
    Length 800M
    Width 30M
    Depth to top 1.2M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 PLACER
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin SEDIMENTATION
    Primary Ore Control BEDDING
    Minimum Depth to Top 1.2
    Avg. Thick. Unconsol. Mat. 1.2
    Min. Thick. Unconsol. Mat. 1.2
    Date of Last Modification 860905

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant No
Discovery year 1880
Mining method Open Pit
Plant type Beneficiation (Mill)
Plant subcategory Electrostatic-Magnetic
Milling method Magnetic And Electrostatic

Ownership information

  • Type Operator
    Owner Nuclebras (Government)
    Home office Brazil
    Year 1982
  • Type Owner
    Owner Nuclebras (Government)
    Interest 100
    Home office Brazil
    Year 1982

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Indicated 1100000mt ore
    Demonstrated 1100000mt ore
    Total resources 1100000mt ore
    Commodity Subtype Grade units Group Importance Year
    REE REE 0.25 wt-pct REE Major 1982
    Titanium TiO2 0.02 wt-pct Titanium Minor 1982
    Titanium TiO2 4.65 wt-pct Titanium Minor 1982
    Zirconium ZrO2 0.41 wt-pct Zirconium Minor 1982
  • Type In-situ
    Estimate year 1983
    Demonstrated 1123000mt ore
    Total resources 1123000mt ore
    Commodity Subtype Grade units Group Importance Year
    REE REE 0.282 wt-pct REE Major 1983
    Titanium TiO2 9.91 wt-pct Titanium Minor 1983
    Titanium TiO2 0.02 wt-pct Titanium Minor 1983
    Zirconium ZrO2 0.7 wt-pct Zirconium Minor 1983

Comments on the reserve resource information

  • MONAZITE WITH 60% REO
  • VALUES IN PUBLISHED RESOURCES TABLE ARE RECOVERABLE AND MINEABLE, BASED ON 15% DILUTION AND 85% RECOVERY.
  • IN-SITU RESOURCES GRADE DERIVED AS: MONAZITE OF 0.47% * 60% = 0.282% REO; RUTILE OF 0.02% * 97% = 0.02% TIO2; ILMENITE OF 9.91% * 54% = 5.35% TIO2; ZIRCON OF 0.70% * 66% = 0.462% ZRO2.

Reference information

Bibliographic references

  • Deposit

    BRASIL (1977), DEPARTAMENTO NACIONAL DA PRODUCAO MINERAL,

  • Deposit

    "AVALIACAO REGIONAL DO SETOR MINERAL - RIO DE JANEIRO,"

  • Deposit

    BRASILIA P. 141.

  • Deposit

    COUTINHO, J. M. V. AND COIMBRA A. M. 1974, "OS PESADOS DO

  • Deposit

    BARREIRAS NA COSTA ORIENTAL BRASILEIRA, ESTUDO DE AREA

  • Deposit

    FONTE XXVII." CONGRESSO DE GEOLOGIA, PORTO ALEGRE, PP.

  • Deposit

    28-40.

  • Deposit

    LEONARDOS, O. H., JR., (1974) - "ORIGIN AND PROVENANCE OF

  • Deposit

    FOSSIL AND RECENT MONAZITE DEPOSITS IN BRAZIL,"

  • Deposit

    ECONOMIC GEOLOGY, PP. 1126-1128.

  • Deposit

    LEONARDOS, O. H., (1956) - MONAZITA NO BRASIL," ENG. MIN. E

  • Deposit

    METALURGIA. V. 32, NO. 137, RIO DE JANEIRO.

  • Deposit

    MACIEL, A.C., AZUAGA, C.H.C., CRUZ, P. ROBERTO (1973),

  • Deposit

    "RESERVAS DE URANIO E TORIO NO BRASIL E NO MUNDO."

  • Deposit

    SOC. BRASIL GEOL. ANAIS DO XXVII CONGRESS, ARACAJU, SE.

  • Deposit

    PP. 305-366.

General comments

Subject category Comment text
Deposit THE GOVERNMENT ESTABLISHED RESOURCES IN THIS AREA BY TRENCHING IN 1971-1972; RESULTS DID NOT INDICATE A POTENTIAL FOR DEVELOPMENT. FOR THE PURPOSE OF THIS ANALYSIS, CAPITAL COSTS (1982 US$) ARE ESTIMATED AS FOLLOWS: DEVELOPMENT - $50,000, MINE EQUIPMENT - $181,000, WET PLANT - $450,000, DRY PLANT - $700,000, AND INFRASTRUCTURE - $130,000. OPERATING COSTS ($/MT) ARE ESTIMATED AS: MINING - $2.33, WET PLANT (GRAVITY) - $2.03, AND DRY PLANT (MAGNETIC) - $9.45. ASSUMED CAPACITY IS 88,000 MTPY, AND COSTS ARE IN TERMS OF 1982 US$.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-DEC-1994 Fantel, Richard J. U.S. Bureau of Mines

Beyond USGS

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

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