Jombo Hill is about two miles in diameter and consists of an outer zone of fine-grained foyaite with alkali pyroxenite and a core of coarse nepheline syenite.

Approx circular 3 km diameter intrusion of nepheline syenites to the northeast, east and southeast of which are the carbonatitic vents of Mrima, Nguluku and Kiruku. There also a range of associated dikes up to 20 km from Jombo making this a small, discrete province isolated spatially and temporally from the rest of alkaline igneous activity of Kenya (Baker in Caswell & Baker 1953, p. 32).

Age: post-jurassic on basis of dikes.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

16 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

ⓘ 'Melanocratic nephelinolite'

ⓘ Nepheline-syenite

ⓘ Phonolite

ⓘ Sandstone

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Rock, N. M. S. (1976) The comparative strontium isotopic composition of alkaline rocks: New data from Southern Portugal and East Africa. Contributions to Mineralogy and Petrology, 56 (2) 205-228 doi:10.1007/bf00399605

Dindi, E. W., & Swain, C. J. (1988). Joint three-dimensional inversion of gravity and magnetic data from Jombo Hill alkaline complex, Kenya. Journal of the Geological Society, 145(3), 493-504. doi.org/10.1144/gsjgs.145.3.0493

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.138

ⓘ Aegirine-augite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Nyambok, I.O. (1980) Petrology and geochemistry of the alkaline intrusion, Jombo Hill, Kenya. Geological Magazine, 117:4, 327-338.

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.

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.138

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

ⓘ Andradite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

References:

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.

ⓘ Andradite var. Melanite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

References:

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.

ⓘ 'Barkevikite'

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.138

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

ⓘ Chalcopyrite

Formula: CuFeS₂

Locality: Hot springs, Jombo Hill, Kwale County, Kenya

References:

Abba-kaka, A (1990) Ore mineralization of two hotsprings near Jombo Hill in south coast area of Kenya. MSc thesis, University of Nairobi

ⓘ Diopside

Formula: CaMgSi₂O₆

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

ⓘ 'Feldspar Group'

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Nyambok, I.O. (1980) Petrology and geochemistry of the alkaline intrusion, Jombo Hill, Kenya. Geological Magazine, 117:4, 327-338.

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.138

ⓘ 'Feldspar Group var. Perthite'

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.138

ⓘ Galena

Formula: PbS

Locality: Hot springs, Jombo Hill, Kwale County, Kenya

References:

Abba-kaka, A (1990) Ore mineralization of two hotsprings near Jombo Hill in south coast area of Kenya. MSc thesis, University of Nairobi

ⓘ 'K Feldspar'

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.138

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

Locality: Hot springs, Jombo Hill, Kwale County, Kenya

References:

Abba-kaka, A (1990) Ore mineralization of two hotsprings near Jombo Hill in south coast area of Kenya. MSc thesis, University of Nairobi

ⓘ Native Gold

Formula: Au

Locality: Hot springs, Jombo Hill, Kwale County, Kenya

References:

Abba-kaka, A (1990) Ore mineralization of two hotsprings near Jombo Hill in south coast area of Kenya. MSc thesis, University of Nairobi

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Nyambok, I.O. (1980) Petrology and geochemistry of the alkaline intrusion, Jombo Hill, Kenya. Geological Magazine, 117:4, 327-338.

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.

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Nyambok, I.O. (1980) Petrology and geochemistry of the alkaline intrusion, Jombo Hill, Kenya. Geological Magazine, 117:4, 327-338.

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.138

ⓘ Pyrite

Formula: FeS₂

Locality: Hot springs, Jombo Hill, Kwale County, Kenya

References:

Abba-kaka, A (1990) Ore mineralization of two hotsprings near Jombo Hill in south coast area of Kenya. MSc thesis, University of Nairobi

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.138

ⓘ Quartz

Formula: SiO₂

Localities:

Hot springs, Jombo Hill, Kwale County, Kenya
Jombo Hill, Kwale County, Kenya

ⓘ Sodalite

Formula: Na₄(Si₃Al₃)O₁₂Cl

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

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.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 9 - Silicates
ⓘ	Andradite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	var. Melanite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Sodalite	9.FB.10	Na₄(Si₃Al₃)O₁₂Cl
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
Unclassified
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Feldspar Group'	-
ⓘ	'Barkevikite'	-
ⓘ	'Feldspar Group var. Perthite'	-
ⓘ	'K Feldspar'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	Carbon
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Quartz	SiO₂
O	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Pyroxene Group	ADSi₂O₆
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Diopside	CaMgSi₂O₆
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Pyroxene Group	ADSi₂O₆
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Cl	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
K	ⓘ Orthoclase	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Ti	Titanium
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Au	Gold
Au	ⓘ Native Gold	Au
Pb	Lead
Pb	ⓘ Galena	PbS

Localities in this Region

Kenya

Kwale County
- Jombo Hill
  - Hot springs

Other Regions, Features and Areas containing this locality

AfricaContinent

African Plate

South AzaniaOrogenic Belt
Tanzanian Coastal basinBasin

Kenya

⭔Coast ProvinceProvince

Somali PlateTectonic Plate

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References

Hayward (pers.. comm. 1999)

Caswell, P. V., & Baker, B. H. (1953). Geology of the Mombasa-Kwale Area Report No. 24. Nairobi, Geological Survey of Kenya.

Coetzee, G.L., Edwards, C.B. (1959) The Mrima Hill Carbonatite, Coast Province, Kenya. South African Journal of Geology, 62:1, 373-397.

Nyambok, I.O. (1980) Petrology and geochemistry of the alkaline intrusion, Jombo Hill, Kenya. Geological Magazine, 117:4, 327-338. doi.org/10.1017/S0016756800032568

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.138

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Jombo Hill, Kwale County, KenyaiRegional Level TypesJombo HillHill Kwale CountyCounty KenyaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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References

Jombo Hill, Kwale County, Kenya i
Regional Level Types
Jombo Hill Hill
Kwale County County
Kenya Country