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  3. Mineral Resource Data System (MRDS)

Caesar 1 Shallow Mining

Producer in Zimbabwe 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. Nearby scientific data
  7. Ore body information
  8. Economic information about the deposit and operations
  9. Mining district
  10. Ownership information
  11. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10134846
MAS/MILS ID 7960100050
Record type Site
Current site name Caesar 1 Shallow Mining
Alternate or previous names Caesar

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.65963, -17.27207 (WGS84)
Elevation 1400
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Zimbabwe(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Zimbabwe

Commodities

Commodity Importance
Chromium Critical Primary

Nearby scientific data

Claim (1) 30.65963, -17.27207
ListMap

Economic information

Ore body information

  • Strike N10E
    Dip 26W
    Thickness 0.1M
    Length 4000M
    Width 300M
    Depth to top 50M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N10E:26W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830627

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1925
Year of first production 1953
Milling method Sizing

Mining district

District name Hartley Complex

Ownership information

  • Type Owner-Operator
    Owner Rhodesian Alloys Ltd. (Rhodall)
    Interest 100
    Home office Zimbabwe
    Year 1981

Comments on the reserve resource information

  • SEQ.NO.FOR SURFACE MINING OF SEAMS 5,6,7,8 AND ADIT MINING FOR SEAMS 5,7 ON CO.CLAIMS AND TRIBUTE AREA TO THE SOUTH. FOR ANALYSIS: 14,740 MTPY ROM FOR: 2,690 MTPY LUMP AT 44.5 % CR2O3 AND 9,050 MTPY CONCS. AT 49 % CR2O3 (GRAV.CONC. AT SUTTON/RODCAMP MILL). ALL PRODUCTS TO GWERU SMELTER. GREAT DYKE RESOURCE. SEAMS 5, 6, 7, 8, 9 OUTCROP ON SECTION. SEAMS 5&6 = .12 M THICK, SEAMS 7&8 = .15 M THICK, SEAM 9=.10 M.
  • 75% PROB. LEVEL IS ESTIMATE OF TONNAGE CONTAINED IN 6 SEAMS (NOS. 4, 5, 6, 7, 8 AND 9) OUTCROPPING ON THE SECTION, ASSUMING A DOWN-DIP EXTENSION OF 300 METERS. ESTIMATED THICKNESSES OF THE 6 SEAMS ARE .10, .12, .12, .15, .15 AND .10 METERS RESPECTIVELY. ESTIMATED STRIKE LENGTHS ARE 4,000 METERS FOR ALL 6 SEAMS. 50% PROB. LEVEL IS ESTIMATED ASSUMING DOWN-DIP EXTENSIONS OF 1000 M FOR SEAM 4, 1200 METERS FOR SEAMS 5 & 6, 1500 METERS FOR SEAMS 7, 8 & 9, AND 2000 METERS FOR SEAMS 10 AND 11 WHICH ARE INFERRED TO OCCUR AT DEPTH. M1C1=M9C4.
  • 1/89 INSITU DEMO.TONNAGE = 13.4 PCT SURFACE MINEABLE(4 M ON-DIP) AND 86.6 PCT UG MINEABLE(100 AND 165 M ON-DIP).

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 80
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    1st Condition of Workings OPEN
    Capacity 140
    Capacity Units MT ORE/DAY
    Unit Production Cost 67
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981

Reference information

Bibliographic references

  • Deposit

    BALLEN, R. COST ESTIMATION FOR SOUTH AFRICAN CHROMITE MINE.

  • Deposit

    1979

  • Deposit

    BALLEN, R. THE IMPLICATIONS OF SOUTH AFRICA AND ZIMBABWE ON

  • Deposit

    THE AMERICAN FERROCHROME INDUSTRY. PHD THESIS: COLORADO

  • Deposit

    SCHOOL OF MINES. 1981.

  • Deposit

    GOLDER ASSOCIATES. "DEPOSIT PROFILE: SELUKWE PEAK, ZIMBABWE"

  • Deposit

    1980.

  • Deposit

    GOLDER ASSOCIATES. "DEPOSIT PROFILE: SUTTON, VANAD, CAESAR,

  • Deposit

    ZIMBABWE." 1981.

  • Deposit

    GOLDER ASSOCIATES. "DEPOSIT PROFILE: AFRICAN CHROME MINES,

  • Deposit

    LTD. ZIMBABWE." 1981.

  • Deposit

    MINISTRY OF MINES. "CHROMIUM MINING." PUBLICATION NO. 3.

  • Deposit

    PP. 1-3.

  • Deposit

    PERSONAL COMMUNICATION, 1981.

  • Deposit

    WORST, B. S. THE GREAT DYKE OF SOUTHERN RHODESIA. (INCLUDING

  • Deposit

    GEOLOGICAL MAP OF THE DYKE, SHEETS 1-9). PP. 1-235.

General comments

Subject category Comment text
Deposit CAESAR MINE IS A MAJOR PRODUCER AS OF 1981. THIS ANALYSIS TREATS A SINGLE SECTION OF THE GREAT DYKE-THE "CAESAR SECTION"-AS ONE MINING UNIT. IN REALITY, MORE THAN ONE COMPANY MAY HOLD LEASES OVER THE SECTION DESCRIBED AND IT IS POSSIBLE TO HAVE SIMULTANEOUS PRODUCTION FROM MORE THAN ONE COMPANY IN THE SECTION. TO ANALYZE THE GREAT DYKE FOR AVAILABILITY IT WAS NECESSARY TO ADDRESS THE SITUATION IN A LOGICAL, COMPARTMENTALIZED FORMAT. HENCE, THE "CAESAR SECTION" REFERS TO A 4 KM LONG SECTION COVERING THE EAST LIMB OF THE GREAT DYKE STRUCTURE FROM THE TOWN OF CALEDONIAN NORTHWARDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-AUG-92 Eastern Field Operations Center (EFOC) 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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