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Conceicao

Producer in Minas Gerais, Brazil with commodities Iron, Gold, Palladium
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Geologic information

Identification information

Deposit ID 10078068
MRDS ID W026223
Record type Site
Current site name Conceicao
Alternate or previous names Conceicao Area Iron Mines Numbered 2, 11, 13, 14, 15, 16, 17, And 20. 5 Unnamed Shafts and 3 Adits For Gold. Mina De Conceicao.

Geographic coordinates

Geographic coordinates: -43.28338, -19.65417 (WGS84)
Location accuracy 100(meters)
Relative position 80 KM NE OF BELO HORIZONTE, Est +/- 2 Seconds
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Geographic areas

Country State
Brazil Minas Gerais

Comments on the location information

  • USED PICO DA CONCEICAO OFF DORR'S (1963) MAP.

Commodities

Commodity Importance
Iron Primary
Gold Secondary
Palladium Secondary

Comments on the commodity information

  • ORES HAVE NO TI, CU, PB, ZN, AS, BI, SB, AND SN; MAIN IMPURITIES ARE SILICA, ALUMINA, PHOSPHOROUS, AND SULFUR BUT ALL IN AMOUNTS WITHIN ACCEPTABLE LIMITS

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Quartz Gangue

Analytical data

Result HIGH GRADE HEMATITE, MORE THAN 64 PERCENT FE
Result SILICEOUS HEMATITE, 60 - 64 PERCENT FE
Result ITABIRITE, 35 - 60 PERCENT FE

Mineral occurrence model information

Model code 241
USGS model code 34a
BC deposit profile F10
Deposit model name Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Nova Lima Group, Rio Das Velhas Series;Caraca Group, Minas Series;Piracicaba Group, Minas Series
    Rock description Nova Lima Group, Rio Das Velhas Series;Caraca Group, Minas Series;Piracicaba Group, Minas Series
    Chronological age 2250
    Uncertainty 150
    Stratigraphic age (youngest) Paleoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Iron Formation
    Rock unit name Caue Formation, Itabira Group, Minas Series
    Rock description Caue Formation, Itabira Group, Minas Series

Nearby scientific data

(1) -43.28338, -19.65417
ListMap

Geologic structures

Type Description Terms
Regional Complex Folding And Granitic Intrusions; Iron Formations Run In Bands Of Varying Widths And Cutting Across Quadrilatero From East To West And North To South; Thickness Ranges To Several Hundred Feet
Local Assymetric Syncline, With Smaller Scale Anticlines And Synclines

Comments on the geologic information

  • SEDIMENTARY IRON FORMATIONS & THEIR COLLUVIAL DERIVATIVES; UNDERLAIN BY RIO DAS VELHAS SERIES, WHICH ALSO HAVE SOME IRON FORMATIONS, WHICH ARE TERMED ITABIRITES WITH ALTERNATING BANDS OF HEMATITE & QUARTZ

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1720
Year of first production 1951

Mining district

District name Itabira District

Ownership information

  • Type Operator
    Owner Cia. Vale Do Rio Doce (C. V. R. D.) )
    First year 1942
  • Type Owner
    Owner Itabira Iron Ore Co. 1930'S), Cia. Vale Do Rio Doce (C. V. R. D.) )
    First year 1920

Comments on the production information

  • ORE A AND ORE D-G FROM BODIES IN FIRST 6 MO. OF OPERATION.

Reserves and resources

  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 67 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1954
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 42 wt-pct Iron Major 1954
  • Type In-situ
    Estimate year 1972
    Total resources 600,000,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 68 wt-pct Iron Major 1972
  • Type In-situ
    Estimate year 1972
    Total resources 1,000,000,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 50 wt-pct Iron Major 1972

Comments on the reserve resource information

  • A + ORE BODY A, DG = ORE BODY D AND G, M = MISCELLANEOUS ORE BODIES, (1) REASONABLY ASSURED ORE, (2) = INFERRED ORE, (3) = ITABIRITE ORE, ORE(4) AND ORE(5) TOTAL RESERVES.

Comments on the workings information

  • IRON, OPEN PIT; GOLD, BOTH. OPEN PIT IN 1982 WAS 1.0 KM LONG AND 0.9KM WIDE WITH REJECT/ MINERALIZED ROCK = 0.49/1.0

Comments on development

  • ITABIRA IRON ORE CO. COMPLETED 6090 METERS OF ADIT IN 1920'S AND 1930'S. CVRD DROVE ADITS IN 1952-1953.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W026223

Bibliographic references

  • Deposit

    ALVARADO, BENJAMIN, 1970 , IRON ORE DEPOSITS OF SOUTH AMERICA, IN SURVEY OF WORLD IRON ORE RESOURCES -- OCCURRENCE AND APPRAISAL: NEW YORK, UNITED NATIONS, P. 302 - 380 . 433 QUN22S

  • Deposit

    DORR, J. V. N., II, AND BARBOSA, A. L. M., 1963 , GEOLOGY AND ORE DEPOSITS OF THE ITABIRA DISTRICT, MINAS GERAIS, BRAZIL: U. S. GEOLOGICAL SURVEY PROF. PAPER 341 - C, P. C1 - C110 .

  • Deposit

    SKILLINGS, D. N., JR., 1972 , CIA. VALE DO RIO DOCE: SKILLINGS' MINING REV., V. 61 , NO. 44 , P. 1 , 8 - 13 .

  • Deposit

    CEASAR, P. DE A.B., 1984, PRINCIPIAS DEPOSITOS MINERAIS: CONCEITOS, METODOLOGIA E LISTAGEM IN SCHOBBENHAUS, C., AMEIDA CAMPOS, D., DERZE, G.R., AND ASMUS, H.E., EDS., GEOLOGIA DO BRASIL: BRASILIA, DEPARTAMENTO NACIONAL DA PRODUCAO MINERAL, P. 249-419.

  • Deposit

    MILLER & SINGWALD, 1919, MAP, P. 169.

  • Deposit

    GODOY & COELHO, 1947.

  • Deposit

    LUMB, 1920, THE PLATINUM METALS: IMPERIAL INSTITUTE, LONDON, P. 52.

  • Deposit

    QUIRING, 1962, DIE METALLISCHEN ROHSTOFFE: PLATINMETALLE 16 BAND, ENKE VERLAG STUTTGART, P. 112.

  • Deposit

    V. DE MELO, M.T., BORBA, R.R., COELHO, W.A., 1986, O DISTRITO FERRIFERO DE ITABIRA: MINAS DO CAUE, CONCEICAO, DOIS CORREGOS, PERIQUITO, ONCA, CHACRINHA, E ESMERIL, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS. C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRAISLIA, V. II, P. 7-28.y

  • Production

    SKILLINGS, D. N., JR., 1972 ; DORR AND BARBOSA (1963); V. DE MELO AND OTHERS (1986)

  • Reserve-Resource

    ALVARADO, B., 1970 ; SKILLINGS, D. N., JR., 1972

General comments

Subject category Comment text
Deposit CONTAINS THREE MAJOR IRON ORE BODIES CALLED A, C, D, AND E. A ORE BODY IS 2000 M LONG. OLD GOLD WORKINGS CONCENTRATED IN A SMALL AREA.
Deposit RECORD NUMBER M045594 BY RAYMOND H. BALCOM WAS INCORPORATED INTO THIS RECORD.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-74 Cooper, Margaret (Shaffer, Glenn L.) U.S. Geological Survey
Updater 01-MAR-75 Balcom, Raymond H. U.S. Geological Survey
Updater 01-SEP-93 Page, Norman J. U.S. Geological Survey
Updater 01-MAR-94 Page, Norman J. U.S. Geological Survey