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  3. Mineral Resource Data System (MRDS)

Impinge

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. Mineral rights holdings
  12. Ownership information
  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 10304874
MAS/MILS ID 7960100041
Record type Site
Current site name Impinge
Alternate or previous names Impinge Section, No Alternate Names

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.83463, -16.89709 (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

Materials information

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

Nearby scientific data

Claim (1) 30.83463, -16.89709
ListMap

Economic information

Ore body information

  • Strike N10E
    Dip 20W
    Length 16000M
    Width 300M
    Depth to top 50M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 OTHER
    Shape of Orebody #1 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N10E:20W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .1
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830622

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1879
Mining method Open Stope - Breast Stoping
Milling method Sizing

Mining district

District name Hartley Complex

Mineral rights holdings

Type of mineral rights Unknown

Ownership information

  • Type Owner-Operator
    Owner Zimbabwe Mining And Smelting Co. (Zimasco)
    Interest 100
    Home office Zimbabwe
    Year 1980

Comments on the reserve resource information

  • IN CONTINUOUS PRODUCTION SINCE ABOUT 1960. FOR ANALYSIS: 10,000 MTPY ROM FOR: 8,000 MTPY FINES AND 2,000 MTPY LUMP. ALL PRODUCTS AT 47 % CR2O3 AND SENT TO KWE KWE SMELTER. GREAT DYKE RESOURCE. SEAMS 9 & 10 PRESENT ON SECTION. BOTH SEAMS .15 M THICK.
  • 1/89 INSITU DEMO.TONNAGE = SEAMS 9 & 10 TO 300 M ON-DIP. 85 PCT RECOVERY.
  • 75% PROBABILITY LEVEL IS ESTIMATE OF TONNAGE CONTAINED IN 3 SEAMS (NO. 9,10,11) TO 300 METERS DOWN DIP (100 METERS VERT. DEPTH). THICKNESSES OF THE THREE SEAMS ARE ESTIMATED TO BE .1,.12, AND .1 METERS RESPECTIVELY. ESTIMATED STRIKE LENGTHS OF OUTCROPS OF THE THREE SEAMS IN THE AREA ARE 8,000 12,000 AND 24,000 METERS RESPECTIVELY. 50% PROBABILITY LEVEL IS ESTIMATED BY INCREASING DOWN DIP EXTENSION TO A 1000 METERS FOR SEAMS 10 AND 11.

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
    1st Condition of Workings OPEN
    Capacity 67
    Capacity Units MT ORE/DAY
    Unit Production Cost 75.09
    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 FROM MILL TO SMELTER IS $15.10/MT MILL OUTPUT

Reference information

Bibliographic references

  • 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 OF 1981 INDICATES THAT AFRICAN CHROME MINES WERE PRODUCING FROM AN OPERATING UNIT IN THE IMPINGE AREA. THIS ANALYSIS TREATS A SINGLE SECTION THE "IMPINGE SECTION" AS ONE MINEABLE UNIT. IN REALITY, MORE THAN ONE COMPANY MAY HOLD THE LEASES FOR THE AREA DESCRIBED AND THERE MAY BE MORE THAN ONE MINE BEING OPERATED AT THE SAME TIME BY DIFFERENT COMPANIES. TO ANALIZE THE ENTIRE GREAT DYKE IT WAS NECESSARY TO ADDRESS THE SITUATION IN A LOGICAL, COMPARTMENTALIZED FASHION. HENCE, THE "IMPINGE SECTION" ANALIZED UNDER SEQ. NO. 7960100041 REFERS TO A 12KM SECTION OF THE GREAT DYKE FROM S 16 DEG. 48 MIN. TO S 16 DEG. 55 MIN. (GURUNGWE FAULT TO IMPINGE FAULT) AND INCLUDES ALL OCCURRENCES (EAST AND WEST SIDES) OF THE DYKE OVER THIS SECTION.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 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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