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Witkop Fluorspar Mine (Marico Fluorspar Mine), Witkop Farm, Ottoshoop, Ngaka Modiri Molema District, North West, South Africai
Regional Level Types
Witkop Fluorspar Mine (Marico Fluorspar Mine)Mine
Witkop FarmFarm
Ottoshoop- not defined -
Ngaka Modiri Molema DistrictDistrict
North WestProvince
South AfricaCountry

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Latitude & Longitude (WGS84): 25° 42' 38'' South , 26° 5' 7'' East
Latitude & Longitude (decimal): -25.71056,26.08528
GeoHash:G#: ke6t9xd9p
Locality type:Mine
Köppen climate type:BSh : Hot semi-arid (steppe) climate


An opencast mine located east of Ottoshoop. The deposit lies within the Marico Fluorspar field, an area of expansive outcropping and subcropping of low to medium grade fluorspar in dolomite. The bulk of the fluorspar mineralisation occurs as a number of discontinuous zones in the Frisco Formation of the Malmani Subgroup of the Transvaal Sequence. The predominant host rock for most of the ore is a grey, medium-grained, sparry dolomite.

Witkop Fluorspar Mine was established as a major acidspar producer by Phelps Dodge, in the Groot Marico district of western North West province to the south of Zeerust, commencing in 1971. The current extensive holdings comprise a contiguous block and three adjacent satellites, totalling some 95km², which embrace extensive dolomite-hosted stratiform fluorite mineralisation, upon which open-pit mining and processing operations are based. These holdings are made up of the amalgamated original properties of Phelps Dodge and the Barlow Rand subsidiary, Marico Fluorspar, which were consolidated as the Witkop Fluorspar Mine before Phelps Dodge sold the entire package to Sallies in 1999. (Source: Industrial Minerals, Fluorspar illuminated, October 2012 issue).

Regions containing this locality

Transvaal, South Africa

Province (Former) - 838 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


11 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Cerussite
Formula: PbCO3
Reference: Windisch, W. (2014) An introduction to micromounting.
Fluorite
Formula: CaF2
Reference: Mining Ann. Review (1985): 415.; http://www.sallies.co.za/witkop.html; Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
'commodity:Fluorite (Fluorspar)'
Reference: From USGS MRDS database
Galena
Formula: PbS
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Goethite
Formula: α-Fe3+O(OH)
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Hematite
Formula: Fe2O3
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Windisch, W. (2014) An introduction to micromounting.
'Manganese Oxides'
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Pyrite
Formula: FeS2
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: Windisch, W. (2014) An introduction to micromounting.
Sphalerite
Formula: ZnS
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39 (1)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Galena'2.CD.10PbS
'Pyrite'2.EB.05aFeS2
'Sphalerite'2.CB.05aZnS
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Goethite'4.00.α-Fe3+O(OH)
'Hematite'4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Cerussite'5.AB.15PbCO3
Group 8 - Phosphates, Arsenates and Vanadates
'Pyromorphite'8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
'Hemimorphite'9.BD.10Zn4Si2O7(OH)2 · H2O
'Tremolite'9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Manganese Oxides'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H HemimorphiteZn4Si2O7(OH)2 · H2O
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C CalciteCaCO3
C CerussitePbCO3
OOxygen
O CalciteCaCO3
O CerussitePbCO3
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O HemimorphiteZn4Si2O7(OH)2 · H2O
O PyromorphitePb5(PO4)3Cl
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
FFluorine
F FluoriteCaF2
MgMagnesium
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
ClChlorine
Cl PyromorphitePb5(PO4)3Cl
CaCalcium
Ca CalciteCaCO3
Ca FluoriteCaF2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2
ZnZinc
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn SphaleriteZnS
PbLead
Pb CerussitePbCO3
Pb GalenaPbS
Pb PyromorphitePb5(PO4)3Cl

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Statherian - Paleoproterozoic
1600 - 2500 Ma



ID: 3184921
Paleoproterozoic sedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Rhyacian - Siderian
2050 - 2500 Ma



ID: 2228585
Malmani Subgroup of Chuniespoort Group of Transvaal Supergroup

Age: Proterozoic (2050 - 2500 Ma)

Stratigraphic Name: Malmani Subgroup

Description: Dolomite, subordinate chert, minor carbonaceous shale, limestone and quartzite

Reference: Council for Geoscience. Geologic map of South Africa, 1:1M. National Science Councils of South Africa. [41]

Rhyacian - Neoarchean
2050 - 2800 Ma



ID: 3306944

Age: Precambrian (2050 - 2800 Ma)

Lithology: Sedimentary and volcaniclastic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mining Annual Review (1985) 415. A fluorspar mine owned by Barlow Rand.
Gomersall, S. (2013) Witkop Fluorspar Mine, Marico district, North West Province. South African Micromount Society newsletter: 39(1).

External Links

http://www.fosagams.co.za/content/introduction-micromounting-wolf-windisch [Windisch, W. (2014) An introduction to micromounting. - Photos of Hemimorphite, Pyromorphite, and Cerussite from Witkop]


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