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Greater Olkaria Volcanic Complex, Nakuru County, Kenyai
Regional Level Types
Greater Olkaria Volcanic ComplexVolcanic Complex
Nakuru CountyCounty
KenyaCountry

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Latitude & Longitude (WGS84):
0° South , 36° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~93km
GRN:
S01E26
Type:
Volcanic Complex
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
406940
Long-form identifier:
mindat:1:2:406940:2
GUID (UUID V4):
0


Multi-centered volcanic field covering 240 km². More than 80 volcanic centres can be distinguished, the products of which are dominantly comenditic with some pantellerite, trachyte and basalt.

A 45 MW power station is operating based on steam produced from the Olkaria Geothermal Field, which is located towards the centre of the complex.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

21 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:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Alkali Feldspar'
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Augite var. Ferrohedenbergite
Formula: (Ca,Mg,Fe)(Fe,Mg)Si2O6
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ Chevkinite-(Ce)
Formula: Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
ⓘ 'Clinopyroxene Subgroup'
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Fayalite
Formula: Fe2+2SiO4
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ 'Fayalite-Forsterite Series'
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Ferro-richterite
Formula: {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2
ⓘ Fluorite
Formula: CaF2
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ 'Glass'
ⓘ Hedenbergite
Formula: CaFe2+Si2O6
Description: Ferrohedenbergite.
ⓘ Ilmenite
Formula: Fe2+TiO3
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ 'K Feldspar'
ⓘ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Montdorite
Formula: (K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Quartz
Formula: SiO2
ⓘ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘ Sanidine
Formula: K(AlSi3O8)
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ 'Zeolite Group'
ⓘ Zircon
Formula: Zr(SiO4)
References:
Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Titanium-bearing Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2SiO4
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘChevkinite-(Ce)9.BE.70Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘHedenbergite9.DA.15CaFe2+Si2O6
ⓘAugite
var. Ferrohedenbergite		9.DA.15(Ca,Mg,Fe)(Fe,Mg)Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘFerro-richterite9.DE.20{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2
ⓘRiebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘMontdorite9.EC.15(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘ'Zeolite Group'9.G0.
Unclassified
ⓘ'K Feldspar
var. Adularia'		-KAlSi3O8
ⓘ'Alkali Feldspar'-
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'K Feldspar'-
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Glass'-

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Hⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ K Feldspar var. AdulariaKAlSi3O8
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ FayaliteFe22+SiO4
Oⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Oⓘ HedenbergiteCaFe2+Si2O6
Oⓘ IlmeniteFe2+TiO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ QuartzSiO2
Oⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Oⓘ SanidineK(AlSi3O8)
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Oⓘ ZirconZr(SiO4)
Oⓘ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Oⓘ Fayalite-Forsterite Series
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluoriteCaF2
Fⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Naⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Naⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
AlAluminium
Alⓘ K Feldspar var. AdulariaKAlSi3O8
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SanidineK(AlSi3O8)
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ K Feldspar var. AdulariaKAlSi3O8
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ FayaliteFe22+SiO4
Siⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Siⓘ HedenbergiteCaFe2+Si2O6
Siⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ QuartzSiO2
Siⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Siⓘ SanidineK(AlSi3O8)
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
KPotassium
Kⓘ K Feldspar var. AdulariaKAlSi3O8
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Kⓘ SanidineK(AlSi3O8)
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Caⓘ FluoriteCaF2
Caⓘ HedenbergiteCaFe2+Si2O6
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
TiTitanium
Tiⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ TitaniteCaTi(SiO4)O
Tiⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Tiⓘ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
MnManganese
Mnⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ FayaliteFe22+SiO4
Feⓘ Ferro-richterite{Na}{CaNa}{Fe52+}(Si8O22)(OH)2
Feⓘ HedenbergiteCaFe2+Si2O6
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Feⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Feⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Feⓘ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Feⓘ Fayalite-Forsterite Series
Feⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
ZrZirconium
Zrⓘ ZirconZr(SiO4)
CeCerium
Ceⓘ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2

Localities in this Region

Kenya

Other Regions, Features and Areas that Intersect

AfricaContinent
African Plate
Kenya
Somali PlateTectonic Plate

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References

Davies, G. R., & Macdonald, R. (1987). Crustal influences in the petrogenesis of the Naivasha Basalt—Comendite Complex: combined trace element and Sr-Nd-Pb isotope constraints. Journal of Petrology, 28(6), 1009-1031. doi.org/10.1093/petrology/28.6.1009
Macdonald, R., Davies, G. R., Bliss, C. M., Leat, P. T., Bailey, D. K., & Smith, R. L. (1987). Geochemistry of high-silica peralkaline rhyolites, Naivasha, Kenya Rift Valley. Journal of Petrology, 28(6), 979-1008. doi.org/10.1093/petrology/28.6.979
Clarke, M. C. G., Woodhall, D. G., Allen, D., & Darling, G. (1990). Geological, volcanological and hydrological controls on the occurrence of geothermal activity in the area surrounding Lake Naivasha, Kenya. Kenya, Ministry of Energy Report, Nairobi, Kenya.
Wilding, M. C., Macdonald, R., Davies, J. E., & Fallick, A. E. (1993). Volatile characteristics of peralkaline rhyolites from Kenya: an ion microprobe, infrared spectroscopic and hydrogen isotope study. Contributions to Mineralogy and Petrology, 114(2), 264-275. doi.org/10.1007/BF00307761
Marshall, A. S., Hinton, R. W., & MacDonald, R. (1998). Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya rift valley. Mineralogical Magazine, 62(4), 477-486. doi.org/10.1180/002646198547855
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.128
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