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  3. Mineral Resource Data System (MRDS)

Casa De Pedra

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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Reserves and resources
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10182299
MAS/MILS ID 3510230028
Record type Site
Current site name Casa De Pedra

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -44.06565, -20.08919 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Minas Gerais(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Minas Gerais

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Feldspar Unknown
Hematite Unknown
Mica Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -44.06565, -20.08919
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Economic information

Ore body information

  • Thickness 136M
    Length 1100M
    Width 790M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin CONT METASOMATIC
    Degree of Wallrock Alter. MODERATE
    Date of Last Modification 860527

Comments on the geologic information

  • HEMATITE ORE OCCURS IN THE FORM OF LAYERS AND LENSES WITH IN ITABIRITE PACKAGES. THE ORE HAS LOW SULFUR AND PHOS- PHOROUS CONTENT.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Year of first production 1967

Ownership information

  • Type Operator
    Owner Companhia Siderurgica Nacional (Csn)
    Year 1982
  • Type Owner
    Owner Siderbras (Brazilian Government)
    Interest 100
    Year 1982

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Measured 272050000mt ore
    Demonstrated 272050000mt ore
    Total resources 272050000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 64 wt-pct Iron Major 1982
    Iron Fe 64 wt-pct Iron Major 1982
  • Type In-situ
    Estimate year 1993
    Demonstrated 260000000mt ore
    Total resources 260000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 65 wt-pct Iron Major 1993

Comments on the reserve resource information

  • CIA. SIDERURGICA NACIONAL WAS THE PREVIOUS COMPANY ABOVE

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Percent Waste Rock 7
    Avg. Bench Height (meters) 13
    Capacity 32100
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.77
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 3
    Year of Information 1982

Comments on other economic factors

  • ONE HUNDRED PERCENT OF PRODUCTION IS FOR THE DOMESTIC MARKET. THE MINE SUPPLIES DIRECTLY TO THE CSN STEEL MILL LOCATED IN VOLTA REDONDA, STATE OF RIO DE JANEIRO.
  • TWO ORE BODIES OF APPROXIMATE EQUAL DIMENSIONS ARE BEING MINED SIMULTANEOUSLY USING THE SAME METHODS.

Reference information

Bibliographic references

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUN 93,P. 36.

  • Deposit

    COOPE, G.F., CASA DE PEDRA, MINING MAGAZINE, MARCH, 1980,

  • Deposit

    PP. 208 - 219.

  • Deposit

    MINING JOURNAL, KAISER'S BRAZILIAN CONTRACTS, FEBRUARY, 1974

  • Deposit

    MSB, CIA. SIDERURGICA NACIONAL, FEBRUARY, 1974.

  • Deposit

    EMJ, FEBRUARY, 1980.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-AUG-1994 Bolis 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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