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Wasaki Peninsula Carbonatites, Homa Bay County, Kenyai
Regional Level Types
Wasaki Peninsula CarbonatitesComplex
Homa Bay CountyCounty
KenyaCountry

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Latitude & Longitude (WGS84):
0° 28' 59'' South , 34° 22' 59'' East
Latitude & Longitude (decimal):
-0.48333,34.38333
GRN:
S01E24
Type:
Complex
Köppen climate type:
Af : Tropical rainforest climate
Mindat Locality ID:
406905
Long-form identifier:
mindat:1:2:406905:1
GUID (UUID V4):
0


The principal concentration of carbonatites is around the northeastern corner, particularly at Sokolo, Uyi and Kiyanya. Other carbonatites are the Okuge (Kuge, Tuige), Angalo, Ngou, Kuwor and Lwala bodies and numerous carbonatite blocks are found in rocks of the Nyamaji volcano.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

6 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Baryte
Formula: BaSO4
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ Fluorite
Formula: CaF2
References:
Barber, C. (1974). The geochemistry of carbonatites and related rocks from two carbonatite complexes, south Nyanza, Kenya. Litho, 7(1), 53-63. doi.org/10.1016/0024-4937(74)90038-3
Rankin, A.H. (1975) Fluid inclusion studies in apatite from carbonatites of the Wasaki area of western Kenya. Lithos, 8 (2) 123-136 doi:10.1016/0024-4937(75)90020-1
Le Bas, M. J. (1977). Carbonatite-nephelinite volcanism: an African case history. London: Wiley.
Kalt, A., Hegner, E., Satir, M. (1997) Nd, Sr, and Pb isotopic evidence for diverse lithospheric mantle sources of East African Rift carbonatites. Tectonophysics, 278 (1) 31-45 doi:10.1016/s0040-1951(97)00093-0
Onuonga, I. O., Fallick, A. E., & Bowden, P. (1997). The recognition of meteoric-hydrothermal and supergene processes in volcanic carbonatites, Nyanza Rift, western Kenya, using carbon and oxygen isotopes. Journal of African Earth Sciences, 25(1), 103-113. doi.org/10.1016/S0899-5362(97)00064-X
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Monazite Group'
Formula: REE(PO4)
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ 'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
References:
Barber, C. (1974). The geochemistry of carbonatites and related rocks from two carbonatite complexes, south Nyanza, Kenya. Litho, 7(1), 53-63. doi.org/10.1016/0024-4937(74)90038-3
Rankin, A.H. (1975) Fluid inclusion studies in apatite from carbonatites of the Wasaki area of western Kenya. Lithos, 8 (2) 123-136 doi:10.1016/0024-4937(75)90020-1
Le Bas, M. J. (1977). Carbonatite-nephelinite volcanism: an African case history. London: Wiley.
Kalt, A., Hegner, E., Satir, M. (1997) Nd, Sr, and Pb isotopic evidence for diverse lithospheric mantle sources of East African Rift carbonatites. Tectonophysics, 278 (1) 31-45 doi:10.1016/s0040-1951(97)00093-0
Onuonga, I. O., Fallick, A. E., & Bowden, P. (1997). The recognition of meteoric-hydrothermal and supergene processes in volcanic carbonatites, Nyanza Rift, western Kenya, using carbon and oxygen isotopes. Journal of African Earth Sciences, 25(1), 103-113. doi.org/10.1016/S0899-5362(97)00064-X
ⓘ 'Synchysite'
Formula: Ca(Ce/Nd/Y/REE)(CO3)2F

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Synchysite'-Ca(Ce/Nd/Y/REE)(CO3)2F
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ CalciteCaCO3
Cⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ BaryteBaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Monazite GroupREE(PO4)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Oⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluoriteCaF2
Fⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ BaryteBaSO4
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ FluoriteCaF2
Caⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ MagnetiteFe2+Fe23+O4
YYttrium
Yⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
NbNiobium
Nbⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
BaBarium
Baⓘ BaryteBaSO4
CeCerium
Ceⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
NdNeodymium
Ndⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F

Geochronology

Mineralization age: Miocene : 12.7 ± 0.6 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Neogene
   Miocene
ⓘ Søvite12.7 ± 0.6 MaSokolo Point Carbonatite, Wasaki Peninsula Carbonatites, Homa Bay County, Kenya

Localities in this Region

Kenya

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Kenya
Somali PlateTectonic Plate
Tanzania

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Barber, C. (1974). The geochemistry of carbonatites and related rocks from two carbonatite complexes, south Nyanza, Kenya. Litho, 7(1), 53-63. doi.org/10.1016/0024-4937(74)90038-3
Rankin, A.H. (1975) Fluid inclusion studies in apatite from carbonatites of the Wasaki area of western Kenya. Lithos, 8 (2) 123-136 doi:10.1016/0024-4937(75)90020-1
Le Bas, M. J. (1977). Carbonatite-nephelinite volcanism: an African case history. London: Wiley.
Kalt, A., Hegner, E., Satir, M. (1997) Nd, Sr, and Pb isotopic evidence for diverse lithospheric mantle sources of East African Rift carbonatites. Tectonophysics, 278 (1) 31-45 doi:10.1016/s0040-1951(97)00093-0
Onuonga, I. O., Fallick, A. E., & Bowden, P. (1997). The recognition of meteoric-hydrothermal and supergene processes in volcanic carbonatites, Nyanza Rift, western Kenya, using carbon and oxygen isotopes. Journal of African Earth Sciences, 25(1), 103-113. doi.org/10.1016/S0899-5362(97)00064-X
Woolley, A. R. (2001) Alkaline Rocks and Carbonatites of the World, Part 3: Africa - Alkaline Rocks and Carbonatites of the World. The Geological Society of London.p.120
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