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  3. Mineral Resource Data System (MRDS)

Marico Underground

Plant in South Africa with commodity Chromium
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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. Mining district
  11. Ownership information
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10231948
MAS/MILS ID 7910200203
Record type Site
Current site name Marico Underground
Alternate or previous names Nietverdiend

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 26.30146, -24.96338 (WGS84)
Elevation 1000
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Bronzite Unknown
Chromite Unknown
Diallage Unknown
Olivine Unknown
Pyroxene Unknown
Vermiculite Unknown

Nearby scientific data

Ore Body (1) 26.30146, -24.96338
ListMap

Economic information

Ore body information

  • Strike N90E
    Dip 06N
    Thickness 0.41M
    Length 9333M
    Width 2280M
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 SILICIFICATION
    Strike And Dip N90E:06N
    Minimum Depth to Top 0
    Date of Last Modification 930526

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1949
Mining method Open Stope - Breast Stoping
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name Groot-Marico District

Ownership information

  • Type Operator
    Owner Marico Mineral Co. (Pty) Ltd.
    Home office South Africa
    Year 1989
  • Type Owner
    Owner Anglo American Corp. Of South Africa, Ltd.
    Interest 50
    Home office South Africa
    Year 1989
  • Type Owner
    Owner Gencor
    Interest 50
    Home office South Africa
    Year 1989

Comments on the reserve resource information

  • MINE NOT ANALYZED TO PRODUCE UNTIL 1998. COL 1 REPRESENTS THE IN-SITU RESOURCE TONNAGE. COL 2 REPRESENTS THE RECOVERABLE RESOURCE TONNAGE.
  • ORIGINALLY UNDER SEQ.791-020-0046(MARICO) BUT SPLIT INTO SURFACE SEQ.NO.(791-020-0046) AND UNDERGROUND ORE SEQ.NO. OPERATION WILL PROBABLY NOT RUN OUT OF SURFACE ORE UNTIL NEAR THE TURN OF THE CENTURY AT WHICH TIME THIS UG POTENTIAL WILL BE DEVELOPED. SAME ROM AND PRODUCT TONNAGE AS FOR SURFACE ORE UPPER "SEAM"=3 BANDS, .46 M THICK, DIP= 15 DEG. MIDDLE "SEAM"= 4-6 BANDS, .41 M THICK, DIP= 4-5 DEGS. LOWER "SEAM"= 1 BAND(?), .38 M THICK, DIP= 7 DEGS.
  • 1/89 INSITU DEMO.TONNAGE= UG MINEABLE TO VERT.DEPTH OF 200 M FOR UPPER SEAM, MIDDLE SEAM AND LOWER SEAM. RECOV.=72 %.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method BREAST STOPING 10-30
    Percent Recovery 72
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    1st Condition of Workings OPEN
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1989

Reference information

Bibliographic references

  • Deposit

    RANKIN G, 1975, "CHROMIUM AND FERROCHROMIUM IN SOUTH

  • Deposit

    AFRICA", SAUNDERS AND TAYLOR, INC., INVESTMENT INDUS-

  • Deposit

    TRY REPORT, JOHANNESBURG, S.A., P. 84-87

  • Deposit

    COERTZE F J, COERTZE C B, "CHROMIUM", P. 117-122.

  • Deposit

    MACGREGOR B I, "A REFRACTORY CHROME ORE DEPOSIT IN THE

  • Deposit

    GROOT-MARICO DISTRICT, TRANSVAAL", THE GEOLOGY OF SOME

  • Deposit

    ORE DEPOSITS SOUTH AFRICA, GEOLOGICAL SOCIETY OF SOUTH

  • Deposit

    AFRICA, 1964, VOL. II, P. 203-207.

  • Deposit

    SIEMS P L, CRIST E M, SHEEHAN L E, BHATT B, "CHROMITE MINES

  • Deposit

    AND RESOURCES IN THE REPUBLIC OF SOUTH AFRICA", UNI-

  • Deposit

    VERSITY OF IDAHO, DEC. 1976, P. 1-34.

  • Deposit

    SOCIETY OF ECONOMIC GEOLOGIST, "GEOLOGYOF THE BUSHVELD IG-

  • Deposit

    NEOUS COMPLEX", MAGMATIC ORE DEPOSITS: A SYPOSIUM, ECON-

  • Deposit

    OMIC GEOLOGY PUBL. CO., LANCASTER PA, 1969, P. 1-39.

  • Deposit

    THE TEX REPORT CO. LTD. P. 106-112, 128.

  • Deposit

    MINING MAGIZINE, AUG. 1981, P. 84-93.

  • Deposit

    GOLDER ASSOCIATES, 1981, "DEPOSIT PROFILE - MARICO

  • Deposit

    (NIETVERDIEND), TRANSVAAL, SOUTH AFRICA.

  • Deposit

    SILK M H, 1988, "WORLD CHROMITE RESOURCE AND FERROCHROMIUM

  • Deposit

    PRODUCTION", MINTEK SPECIAL PUBL. NO 11.

  • Deposit

    DAVIDOFF R L, BOYLE E H JR., 1988, "NOTES FROM VISIT TO THE

  • Deposit

    REPUBLIC OF SOUTH AFRICA", USBM, MINERALS AVAILIBILITY

  • Deposit

    FIELD OFFICE.

Reporter information

Type Date Name Affiliation Comment
Reporter 26-MAY-93 Boyle, Ed 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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