Netherburn

Producer in Midlands, Zimbabwe with commodity Chromium
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 10231782
MAS/MILS ID 7960250011
Record type Site
Current site name Netherburn
Alternate or previous names No Alternate Name

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.16805, -19.28024 (WGS84)
Elevation 1400
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Midlands(province)

Zimbabwe(country)

Africa(continent)

Land(continent)

Geographic areas

Country State
Zimbabwe Midlands

Commodities

Commodity Importance
Chromium Critical Primary

Nearby scientific data

Claim (1) 30.16805, -19.28024

Economic information

Ore body information

  • Strike N20E
    Dip 20E
    Thickness 0.2M
    Length 21000M
    Width 300M
    Depth to top 40M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 MASSIVE
    Shape of Orebody #2 OTHER
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N20E:20E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830718

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Mining method Open Stope - Breast Stoping
Year of first production 1952
Milling method Gravity

Mining district

District name Selukwe District

Ownership information

  • Type Owner-Operator
    Owner Consolidated Minerals
    Interest 100
    Home office Zimbabwe
    Year 1980

Comments on the ownership information

  • CONSOLIDATED MINERALS IS A SUBSIDIARY OF RAND MINES OF SOUTH AFRICA.

Comments on the reserve resource information

  • Q MATRIX 1,75% PROBABILITY LEVEL IS AN ESTIMATE OF TONNAGE CONTAINED IN 3 SEAMS(NOS.1,2 & 5)WHICH OUTCROP ON THE SECTION, PROJECTED FOR 300M DOWN DIP. ESTIMATED THICKNESS FOR THE THREE SEAMS ARE .18 ,.23 ,AND .15 METERS RESPECTIVLY. 50% PROBABILITY LEVEL ASSUMES DOWN DIP OF 400 METERS FOR SEAMS 1 AND 2, AND 1000 METERS FOR SEAM 5. M1C1=M9C4.
  • 1/89 INSITU DEMO.TONNAGE = SEAMS 1 & 2 ONLY, TO 400 M ON-DIP. 85 % RECOVERY.

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
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    1st Condition of Workings OPEN
    Capacity 160
    Capacity Units MT ORE/DAY
    Unit Production Cost 53.68
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    SOUTHERN RHODESIAN GEOLOGICAL SURVEY BULLETIN #47. PP.

  • Deposit

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

  • Deposit

    PERSONAL COMMUNICATION (SITE VISIT). 1981.

General comments

Subject category Comment text
Deposit ALTHOUGH BARLOW RAND HAS NO DIRECT CHROMITE MINING INTEREST, IT OBTAINS PROFITS FROM THIS INDUSTRY THROUGH ITS 100% INTEREST IN RAND MINES, WHICH OWNS 100% OF NETHERBURN. NETHERBURN HAS BEEN A MAJOR PRODUCING OPERATION SINCE 1981. THIS ANALYSIS TREATS A SINGLE SECTION OF THE GREAT DYKE-" THE NETHERBURN SECTION"- AS ONE MINING UNIT. IN REALITY, MORE THAN ONE COMPANY CAN HOLD LEASES OVER THE SECTION DESCRIBED AND THER MAY BE SIMULTANEOUS PRODUCTION FROM DIFF- ERENT COMPANIES IN THE SECTION. TO ANALIZE THE GREAT DYKE FOR AVAILABILITY IT WAS NECESSARY TO ADDRESS THE SITUATION IN A LOGIICAL, COMPARTMENTALIZED FORMAT. HENCE,"THE NETHERBURN SECTION" REFERS TO A 21KM LONG SECTION COVERING THE WEST LIMB OF THE GREAT DYKE STRUCTURE FROM OPPOSITE THE TOWN OF LALAPANZI TO A POINT WHERE THE QUE QUE TO UMUKMA ROAD PASSES OVER THE DYKE.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-APR-95 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.