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Gootau

Occurrence in Botswana with commodity Manganese
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10003928
MRDS ID AD00323
Record type Site
Current site name Gootau

Geographic coordinates

Geographic coordinates: 27.33475, -22.69678 (WGS84)
Relative position 30 KM SE OF PALAPYE (AND RAILHEAD)

Site location context

Political divisions (FIPS codes)

Botswana(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Botswana

Commodities

Commodity Importance
Manganese Critical Tertiary

Comments on the commodity information

  • MAXIMUM GRADE OF MNO2- 70.2%

Materials information

Materials Type of material
Psilomelane Ore
Calcite Gangue
Glauconite Gangue
Hematite Gangue
Sericite Gangue

Alteration

  • (Local) Supergene Oxidation

Analytical data

Result SUPERFICIAL DEPOSITS: MNO2-52.3%
Result SIO2-24.5%
Result FE2O3-13.2%
Result P2O5-0.4%
Result LOI-8.0%. HIGHEST GRADES OF SURFACE MATERIAL WERE OBTAINED ADJACENT FAULTS.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Mesoproterozoic
    Stratigraphic age (youngest) Mesoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Stratigraphic age (youngest) Mesoproterozoic
    Chronological age 1250
    Dating method K-Ar
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Stratigraphic age (youngest) Mesoproterozoic
    Chronological age 1250
    Dating method K-Ar

Nearby scientific data

(1) 27.33475, -22.69678
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Open Folds Cut By Major Faults (Trending N10w-N35w Paralllel To Fold Axes)
Type of structure Local
Structure description Faulting Locally Has Steepened Dips By Up To 40. Faults In Part Controlled By Structural Trends In Basement Granites.

Ore body information

  • General form BLANKET
    Strike NW-SE AVERAGE
    Dip 15-25 N/NNE
    Thickness 0.03M
    Length 50000M

Controls for ore emplacement

  • Early Diagenetic With Dissolved Mn Moving From Underlying Oxygen-Depleted Shales Into Oxygenated, Overlying Arenites, All Of Deltaic Origin. Low Rates Of Sedimentation Postulated For A Basin Surrounded By Low Relief Hinterland.

Comments on the geologic information

  • SELIKA FM. IS THE BASAL UNIT OF THE PALAPYE GROUP. FM RESTS UNCONFORMABLY ON GRANITOIDS. THIS FM. PREDOMINANTLY COMPOSED OF RED, BROWN, OR PURPLE, MASSIVE & FLAGGY FERRUGINOUS QUARTZITES WITH QUARTZ-PEBBLE TO BOULDER CONGLOMERATE AND PREMINENT SHALE, MUDSTONE & SILTSTONE INTERLAYERS NEAR THE TOP AND WITH ANDESITIC VOLCANICS NEAR THE BASE. MN MEMBER (UP TO 29M THICK) OCCURS NEAR THE TOP OF THE FM. OVERLYING APPROX. 500M OF FLAGGY FERRUGINOUS QUARTZITE. THE SEQUENCE IS NOTICEABLY SHALE-RICH ABOVE & BELOW THE MN LAYERS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Tswapong & Tshweneng Hills

Comments on development

  • SAMANCOR BOTSWANA (PTY) LTD TOOK OUT A TWO YEAR PROSPECTING LICENSE THAT WAS RELINQUISHED IN FEB. 1978. FIVE HOLES DRILLED WITH A COMBINED DEPTH OF 119.4M. 390 CHANNEL SAMPLES WERE COLLECTED AT 100M SPACINGS ALONG THE STRIKE LENGHT OF MN HORIZON. ; ECON.COM: PREVIOUS WORKERS HAVE DOWNGRADED THE POTENTIAL OF THE REGION TO HOST LARGE ECONOMIC MN DEPOSITS.

Reference information

Bibliographic references

  • Deposit

    KEY, R.M., 1980, STRATIFORM MANGANESE MINERALIZATION IN THE PALAPYE GROUP, CENTRAL-EASTERN BOTSWANA. IN.PROC. OF THE 5TH QUAD. IAGOD SYMPOSIUM, E. SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG, STUTTGART. P. 607-617.

General comments

Subject category Comment text
Deposit MANGANESE OCCURS AS A SUPERGENE SURFICIAL DEPOSIT (VEINS UP TO 5 MM THICK) IN OUTCROP (BETWEEN A FEW CM UP TO 2.5M) OR AS THIN STRATIFORM SEAMS (UP TO 30CM THICK) IN SUBSURFACE.
Deposit MANGANESE SEAMS EACH ABOUT 1MM IN THICKNESS (PRIMARY) OCCUR IN INTERLAYERED FINE-GRAINED PALE BROWN ARENITES AND DARK GRAY MUDSTONES. MN SEAMS ALWAYS MIMIC THE LOWER CONTACT BETWEEN QUARTZITE AND MUDSTONE. FINE INTERLAYERING (VARVES?) IN VARIOUS LITHOLOGIES SUGGEST LOW AND QUIET RATES OF SEDIMENTATION. MN-BEARING SEQUENCE THOUGHT BY KEY TO HAVE FORMED IN A DELTAIC ENVIRONMENT. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1991 Bolton, Barrie R. BHP Utah Industries

Beyond USGS

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

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