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Middelplaats Manganese

Producer in Eastern Cape, South Africa with commodities Manganese, Iron
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10080051
MRDS ID W031002
Record type Site
Current site name Middelplaats Manganese
Related records 10183101

Geographic coordinates

Geographic coordinates: 22.86819, -27.32994 (WGS84)
Relative position 60 KM WEST OF KURUMAN, NORTHERN CAPE PROVINCE

Site location context

Political divisions (FIPS codes)

Eastern Cape(province)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country State
South Africa Eastern Cape

Commodities

Commodity Importance
Manganese Critical Primary
Iron Tertiary

Comments on the commodity information

  • LOWALUMINA, SULFUR, PHOSPHOROUS & HIGH MN/FE RATIO MAKES ORE AN EXCELLENT BLENDING MATERIAL. A HARD COMPETENT ORE.

Materials information

Materials Type of material
Braunite Ore

Analytical data

Result M1 LUMP (1N %): MN 38-40/FE 4/SIO2 5/CAO 14/P 0.03/S 0.04/AL203 0.5. M2 LUMP (1N%): MN 34-36/FE 4.5/SIO2 5/CAO 14/P. 0.03/S 0.05/AL203 0.5.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)

Nearby scientific data

(1) 22.86819, -27.32994
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description The Basin Is About 15 Km Wide & Has Been Gently Folded Into A Large Synclinal Structure.
Type of structure Local
Structure description Local Normal Faults (Intruded By Gabbro Dikes) Cause Offsets Of Orebody.

Ore body information

  • General form TABULAR/BLANKET IRREGULAR
    Dip 10 NW
    Thickness 14M
    Depth to bottom 500M

Controls for ore emplacement

  • Original Manganiferous Sediments Subjected To Uplift, Erosion, Resulting In Solution, Transport & Concentration Of Manganese In Banded Ironstone.

Comments on the geologic information

  • DASPOORT STAGE LAVA (TRANSVAAL SYSTEM, PRETORIA STAGE) UNDERLIES ORE HORIZON. TERTIARY (KALAHARI BEDS) UNCONFORMABLY OVERLIE ORE BODIES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant No
Year of first production 1979

Mining district

District name Kalahari Field

Ownership information

  • Type Operator
    Owner Middelplaats Manganese Ltd
  • Type Owner
    Owner S. A. Manganese Amcor Ltd. (Samancor)

Production statistics

  • Year 1980
    Material ORE MN
    Accuracy Accurate
    Description Ap_Grade: ^M1 Lump 38-40% Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Manganese Manganese 39wt-pct

Comments on the production information

  • PRODUCTION ESTIMATE BASED ON TOTAL COUNTRY PRODUCTION OF MANGANESE AND VERBAL INFORMATION RECEIVED FROM SAMANCOR AND MINERALS BUREAU OFFICIALS.

Workings at the site

  • Type of workings Unknown
    Overall depth 500M
    Overall width 14M

Comments on the workings information

  • ACCESS BY INCLINED RAMP 2500 M LONG & VERTICAL SHAFT 489 M DEEP. RAMP NOW USED FOR TRANSPORT OF MEN & MATERIALS, AND SHAFT FOR ORE HOIST OF 14.5 TON CAPACITY. ROOM AND PILLAR MINING WILL PROVIDE FOR 75% OVERALL RECOVERY.

Comments on development

  • DEV$: 55000 ; MILL.CAP: 1200 ; ECON.YEAR: 1980 ; ECON.COM: AN UNDERGROUND OPERATION WITH EST LIFE OF 30 YRS. HIGHLY MECHANIZED, RESULTING IN LOW OPERATING COSTS. EXPORTED AS BLEND ORE THRU PORT ELIZABETH 950 KM FROM MINE. ALSO USED LOCALLY IN SOUTH AFRICA FERROALLOYS INDUSTRY (DIRECT FEED ORE).

Reference information

Bibliographic references

  • Analytical Data

    SRC.REF: MANGANESE-A MINERAL COMMODITY REVIEW: SOUTH AFRICA DEPT OF MINES, MINERALS BUREAU, REPT NO 53, 1979

  • Deposit

    DEPT. OF MINES, GEOLOGICAL SURVEY OF SOUTH AFRICA, 1976, MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, 5TH EDITION, HANDBOOK 7.

  • Deposit

    PELLETIEN, R.A, 1964, MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA.

  • Deposit

    DE VILLIENS, P.R., THE GEOLOGY AND MINERALOGY OF THE KALAHARI MANGANESE FIELD NORTH OF SISHEN.

  • Deposit

    DEPT OF MINES, GEOLOGICAL SURVEY OF SOUTH AFRICA, 1960, THE MANGANESE DEPOSITS OF THE UNION OF SOUTH AFRICA, HANDBOOK 2.

  • Other Database

    ISMI

  • Production

    MIDDELPLAATS LTD ANNUAL REPORT. GRADES FROM MINERALSBUREAU MANGANESE COMMODITY REVIEW, CURRENT YEAR.

General comments

Subject category Comment text
Deposit ORE HORIZON CUT BY NORMAL FAULT SO THAT SE OF SHAFT IS 500 M BELOW SURFACE & NW OF SHAFT IS 300 M BELOW SURFACE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1981 Mccarter, Lorna D. Department of State
Updater 01-AUG-1984 Mccarter, Lorna D Department of State

Beyond USGS

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

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