1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Divide/Francis

Past 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. 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. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10158595
MAS/MILS ID 7960100031
Record type Site
Current site name Divide/Francis
Alternate or previous names Divide

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.58464, -17.68034 (WGS84)
Elevation 1350
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

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Plagioclase Unknown
Pyroxene Unknown

Nearby scientific data

Claim (1) 30.58464, -17.68034
ListMap

Economic information

Ore body information

  • Strike N10E
    Dip 26W
    Thickness 0.1M
    Length 8000M
    Width 300M
    Depth to top 65M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 OTHER
    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 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 Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Mining method Open Stope - Breast Stoping
Milling method Sizing

Mining district

District name Hartley Complex

Ownership information

  • Type Owner-Operator
    Owner Rhodesian Alloys Ltd. (Rhodall)
    Interest 100
    Year 1982

Comments on the production information

  • FOR YEAR 2044 ORE FEED GRADE IS 34.36%, AND MILL CONCENTRATE GRADE IS 35.36%.

Comments on the reserve resource information

  • 1/89 INSITU DEMO.TONNAGE = SEAM 4 ONLY TO 400 M ON-DIP. 85 % RECOVERY.
  • SHUT DOWN IN 1981/1982. FOR ANALYSIS: 20,000 MTPY ROM FOR : 16,570 MTPY LUMP AND 1,800 MTPY FINES AT 47.0 % CR2O3. ALL PRODUCTS AT 47.0 % CR2O3 AND ANALYZED AS CHROMITE MET PRODUCTS FOR EXPORT IN AVAIL. STUDY. GREAT DYKE RESOURCE. SEAMS 4, 5, 6, 7, 8 PRESENT ON SECTION. SEAM 4 =.10 M THICK, SEAMS 5&6 = .125 M THICK, SEAMS 7&8 = .15 M.
  • 75% PROBABILITY LEVEL ESTIMATE IS OF TONNAGE CONTAINED IN 7 SEAMS (NO.S 4,5,6,7,8,9 AND 10) IN COLUMN 2= CR2O3 GRADE FOR DEVELOPMENT RECORD 002. OUTCROPPING ON THE SECTION , ASSUMING DOWN DIP EXTENSIONS OF 300 METERS FOR ALL SEAMS. ESTIMATED THICKNESSES FOR THE SEAMS ARE .10,.12,.12,.15,.15, .10 AND .12 METERS RESPECTIVELY. ESTIMATED STRIKE LENGTHS ARE 8,000 METERS FOR ALL SEAMS. 50% PROBABILITY LEVEL IS TONNAGE CONTAINED IF DOWN DIP EXTENSIONS ARE 500 METERS FOR SEAM 4,1200 M FOR SEAMS 5&6,1500M FOR SEAMS 7&8 AND 2000 M FOR SEAMS 9,10 AND 11(SEAM 11 INFERRED TO OCCUR AT DEPTH).

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method RESUING 10-61
    Percent Recovery 80
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Slope of Inclines 26
    1st Condition of Workings OPEN
    Capacity 50
    Capacity Units MT ORE/DAY
    Unit Production Cost 85.95
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981

Comments on other economic factors

  • TRANSPORTATION COST MILL TO SMELTER: $9.90/MT.

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 INFORMATION FROM 1981 INDICATES THAT A PRODUCING OPER- ATION WAS LOCATED IN THE AREA OF THE OLD DIVIDE MINE. THIS ANALYSIS TREATS A SINGLE SECTION OF THE GREAT DYKE - THE "DIVIDE SECTION" - AS ONE MINING UNIT. IN REALITY, MORE THAN COMPANY MAY HOLD LEASES OVER THE SECTION DESCRIBED AND THERE COULD BE SIMULTANEOUS PRODUCTION BY WORK THAN ONE COMPANY FROM THE SECTION. TO ANALYZE THE GREAT DYKE FOR AVAILABILITY IT WAS NECESSARY TO ADDRESS THE SITUATION IN A LOGICAL, COM- PARTMENTALIZED FORMAT. HENCE, THE "DIVIDE SECTION" REFERS TO AN 8 KM SECTION COVERING THE EAST LIMB OF THE GREAT DYKE STRUCTURE FROM THE OLD DIVIDE MINE NORTHWARDS TO BRINSHAM.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-APR-95 Rfb 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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