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Alegria

Producer in Minas Gerais, Brazil with commodity Iron
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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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10078072
MRDS ID W026227
Record type Site
Current site name Alegria
Alternate or previous names Alegria Complex, Mina De Alegria, Fazenda Alegria

Geographic coordinates

Geographic coordinates: -43.42394, -20.16415 (WGS84)
Relative position 50KM SE OF BELO HORIZONTE

Site location context

Political divisions (FIPS codes)

Minas Gerais(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Minas Gerais

Comments on the location information

  • THE ALEGRIA MINE IS BETWEEN 20-07 AND 20-17S AND 43-24 AND 43-35W. OTHER PARTS OF THE ALEGRIA COMPLEX ARE CONTA HISTORIA (S), FABRICA NOVA (SE), FAZENDAO (E), GERMANO, ALEGRIA ESTE, ALEGRIA OESTE, ALEGRIA CENTRO, CONTA HISTORIA NORTE, BATATAL MORRO DA MINA (E), AND ALEGRIA.

Commodities

Commodity Importance
Iron Primary

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 SEE MAXWELL (1972) FOR FE, SIO2, AL2O3P ANALYSES FROM EXPLORATION ADITS.

Mineral occurrence model information

Model code 241
USGS model code 34a
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 > Phyllite
    Rock unit name Batatal Formation, Caraca Group, Minas Series;Gandarela Formation, Itabira Group, Minas Series
    Rock description Batatal Formation, Caraca Group, Minas Series;Gandarela Formation, Itabira Group, Minas Series
    Stratigraphic age (youngest) Paleoproterozoic
    Stratigraphic age (youngest) Paleoproterozoic
  • Host or associated Associated
    Rock type Metamorphic Rock > Schist
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • 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) -43.42394, -20.16415
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description 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
Type of structure Local
Structure description Shallow Se Plunging Syncline

Ore body information

  • General form IRREGULAR
    Strike E - W
    Dip S
    Thickness 2000M
  • General form IRREGULAR
    Dip S
  • General form IRREGULAR
    Dip S

Comments on the geologic information

  • MONOCLINAL SEQUENCE DIPPING S. AT ALEGRIA PIT.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1803
Year of first production 1967

Mining district

District name Quadrilatero Ferrifero, Piracicaba Area

Ownership information

  • Type Operator
    Owner Brasilian Iron And Steel Co. , Companhia Siderugica Belgo Mineira S. A. M
    First year 1911
    Last year 1942
  • Type Owner
    Owner S. A. Mineracao Da Trindade (Samitri) )
    First year 1961

Comments on the production information

  • RESERVES ARE FOR MINA ALEGRIA (1982). ORE (4) TOTAL RESERVE FOR ALEGRIA COMPLEX INCLUDES HEMATITE, HIGH GRADE ITABIRITE, AND LOW GRADE ITABIRITE.

Reserves and resources

  • Type In-situ
    Estimate year 1973
    Total resources 102000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 64 wt-pct Iron Major 1973
  • Type In-situ
    Estimate year 1973
    Total resources 42000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 60 wt-pct Iron Major 1973
  • Type In-situ
    Estimate year 1973
    Total resources 6000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 35 wt-pct Iron Major 1973

Comments on the workings information

  • OPEN PIT 8M LEVELS

Comments on development

  • ORGINALLY EXPLORED FOR GOLD BEGINNING IN 1782. FROM 1911-1982, THERE ARE 16160M OF ADITS, 4817M OF SHAFTS, 27078M OF DIAMOND DRILLING, 140876 GEOCHEMICAL ANALYSES, 22654 PHYSICAL TESTS.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ALEGRIA COVERS AN AREA OF ABOUT 16.1 SQUARE KM

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Cooper, Margaret (Shaffer, Glenn L.) U.S. Geological Survey
Updater 01-MAR-1994 Page, Norman 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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