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  3. Mineral Resource Data System (MRDS)

Vanad

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. Production statistics
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10207571
MAS/MILS ID 7960100028
Record type Site
Current site name Vanad
Alternate or previous names No Alternate Names

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.71803, -17.08038 (WGS84)
Elevation 1500
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
Mica Unknown
Olivine Unknown
Plagioclase Unknown
Pyroxene Unknown

Nearby scientific data

Claim (1) 30.71803, -17.08038
ListMap

Economic information

Ore body information

  • Strike N20E
    Dip 26E
    Thickness 0.1M
    Length 6000M
    Width 300M
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    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 N20E:26E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830712
  • Area 2000HA
    Field Value
    Total Surface Area (HA) 2000
    Date of Last Modification 910418

Comments on the geologic information

  • TYPE OF OREBODY IS LAYERED INTRUSIVE. HARTLEY COMPLEX IS AT CENTER OF GREAT DYKE. 11 CHROMITE SEAMS HAVE BEEN IDENTIFIED.

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1925
Mining method Open Stope - Breast Stoping
Year of first production 1953
Milling method Gravity

Mining district

District name Hartley Complex

Ownership information

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

Production statistics

  • Year 1970
    Description 80000 Mt. Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 80000mt
  • Year 1976
    Description 236000 Mt. Ore/Yr.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 236000mt

Comments on the reserve resource information

  • SECTION HAS BEEN IN CONTINUOUS PRODUCTION SINCE 1939. FOR ANALYSIS: 34,000 MTPY ROM FOR 20,800 MTPY LUMP AT 46 % CR2O3 AND 9,000 MTPY CONCS. AT 50.0 % CR2O3. MILLING AT SUTTON/RODCAMP SECTION (7960100027). ALL PRODUCTS TO GWERU SMELTER. GREAT DYKE RESOURCE. SEAMS 6,7,8,9&9A,AND 10 PRESENT ON SECTION. NOS.6,7,8 = .15 M THICK, NOS.9,9A,10 = .125 M THICK.
  • 1/89 INSITU DEMO.TONNAGE = "SHALLOW" & "DEEP" UG ORE FOR SEAMS 9&9A AND 10 ONLY. TO 300 M ON-DIP. 85 % RECOVERY.
  • M9C4=M1C2, 75% PROB. LEVEL IS ESTIMATE OF TONNAGE CONTAINED IN 5 SEAMS ON THIS SECTION (NOS. 6,7,8,9, AND 10) PROJECTED FOR A DOWN- DIP EXTENSION OF 300 METERS FROM THE SURFACE (ABOUT 125 METER VERTICAL DEPTH). THICKNESSES OF THE FIVE SEAMS ARE ESTIMATED TO BE .12, .15, .15, .10, .12 METERS RESPECTIVELY. STRIKE LENGTHS OF OUTCROPS OF THE FIVE SEAMS ON THE SECTION ARE ESTIMATED TO BE 2000 M FOR SEAM 6 AND 6000 M FOR SEAMS 7,8, 9,10. 50% PROB. LEVEL ESTIMATED BY EXTENSION DOWN DIP TO 300 M FOR SEAMS 6 AND 7, 800 M FOR SEAM 8, 1000 M FOR SEAM 9 AND 1200 M FOR SEAMS 10.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BREAST STOPING 10-30
    Percent Waste Rock 0
    Percent Recovery 80
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    1st Condition of Workings OPEN
    Capacity 140
    Capacity Units MT ORE/DAY
    Unit Production Cost 59.21
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981

Reference information

Bibliographic references

  • Deposit

    BICHAN,R. "ORIGIN OF CHROMITE SEAMS IN THE HARTLEY COMPLEX

  • Deposit

    OF THE GREAT DYKE, RHODESIA." PP.95-113.

  • Deposit

    PROSPECTUS OF RHODALL LIMITED. 1980.

  • Deposit

    RHODALL LIMITED, 31ST ANNUAL REPORT,1980.

  • Deposit

    WORST,B.G. D.SC. "THE GREAT DYKE OF SOUTHERN RHODESIA,"

  • Deposit

    SOUTHERN RHODESIA GEOLOGICAL SURVEY BULLETIN NO. 47.

  • Deposit

    PP. 32-36,82-84,186-231.

General comments

Subject category Comment text
Deposit THIS ANALYSIS TREATS A SMALL SECTION OF THE GREAT DYKE AS A MINEABLE UNIT-"THE "VANAD" SECTION. IN REALITY, MORE THAN ONE COMPANY MAY HOLD THE LEASES FOR THE SECTION DESCRIBED AND MORE THAN ONE COMPANY COULD BE IN PRODUCTION AT THE SAME TIME. THE ENTIRE GREAT DYKE FOR AVAILABILITY, IT WAS NECESSARY TO THE SITUATION IN A LOGICAL, COMPARTMENTALIZED FASHION. HENCE, THE "VANAD" SECTION REFERS TO A 3 KM SECTION FROM THE ETHEL FAULT SOUTHWARDS, COVERING BOTH LIMBS OF THE GREAT DYKE SYNCLING THIS ANALYSIS TREATS A SMALL SECTION OF THE GREAT DYKE AS A SINGLE MINEABLE UNIT- THE "VANAD" SECTION. IN REALITY, MORE THAN ONE COMPANY MAY HOLD THE LEASES FOR THE SECTION DE- CRIBED AND MORE THAN ONE MINING COMPANY COULD BE IN PRODUC- TION AT THE SAME TIME. TO ANALYZE THE ENTIRE GREAT DYKE FOR AVAILABILITY, IT WAS NECESSARY TO ADDRESS THE SITUATION IN A LOGICAL, COMPARTMENTALIZED FASHION. HENCE, THE "VANAD" SECTION REFERS TO A 3 KM SECTION FROM THE ETHEL FAULT SOUTH- WARDS, COVERING BOTH LIMBS OF THE GREAT DYKE SYNCLINE. THE REGION IS PART OF THE HARTLEY COMPLEX OF THE GREAT DYKE.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-APR-1995 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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