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Douala basin, African Plate i
Regional Level Types
Douala basin Basin
African Plate Tectonic Plate

Regional Level Types
Douala basin	Basin
African Plate	Tectonic Plate

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View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

View of the Logbaba oil field, in 1904.

Oil field, Logbaba, Douala III, Littoral Region, Cameroon

Type:

Basin

Largest Settlements:

Place	Population
Douala	1,338,082 (2011)
Malabo	155,963 (2018)
Limbe	72,106 (2016)
Tiko	55,914 (2014)
Mutengene	47,478 (2006)
Buea	47,300 (2018)

Mindat Locality ID:

421704

Long-form identifier:

mindat:1:2:421704:9

GUID (UUID V4):

No description has been added for this locality. Can you add one?

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Mineral List

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

19 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

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Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Fitton, J. G., & Dunlop, H. M. (1985). The Cameroon line, West Africa, and its bearing on the origin of oceanic and continental alkali basalt. Earth and Planetary Science Letters, 72(1), 23-38. doi.org/10.1016/0012-821X(85)90114-1

Fitton, J. G. (1987). The Cameroon line, West Africa: a comparison between oceanic and continental alkaline volcanism. Geological Society, London, Special Publications, 30(1), 273-291. doi.org/10.1144/GSL.SP.1987.030.01.13

Bindi, Luca, Bonazzi, Paola, Fitton, J. Godfrey (2001) Crystal chemistry of strontian soda melilite from nephelinite lava of Mt. Etinde, Cameroon. European Journal of Mineralogy, 13 (1) 121-125 doi:10.1127/0935-1221/01/0013-0121

ⓘ Aegirine-augite

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

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Aenigmatite

Formula: Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Nkoumbou, C., Deruelle, B., Velde, D. (1995): Petrology of Mt Etinde Nephelinite Series, Journal of Petrology, Vol. 36, no 2, p. 373-395

ⓘ 'Alkali Feldspar'

Locality: Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

References:

Vincent, P.M. 1971. New data about Cameroon Mountain volcano. Journal of the Geological Society, London, 127, 414-415.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Déruelle, B., Moreau, C., & Nsifa, E. N. (1983). Sur la recente eruption du Mont Cameroun (16 octobre-12 novembre 1982). Comptes Rendus des Seances de L'Academie des Sciences. Paris Ser. 2, 296, 807-812.

Fitton, J. G., Kilburn, C. R. J., Thirlwall, M. F., & Hughes, D. J. (1983). 1982 eruption of Mount Cameroon, West Africa. Nature, 306(5941), 327-332.

Déruelle, B., N'ni, J., & Kambou, R. (1987). Mount Cameroon: an active volcano of the Cameroon Line. Journal of African Earth Sciences (1983), 6(2), 197-214. doi.org/10.1016/0899-5362(87)90061-3

Halliday, A. N., Dickin, A. P., Fallick, A. E., & Fitton, J. G. (1988). Mantle dynamics: a Nd, Sr, Pb and O isotopic study of the Cameroon line volcanic chain. Journal of Petrology, 29(1), 181-211. doi.org/10.1093/petrology/29.1.181

Sato, H., Aramaki, S., Kusakabe, M., Hirabayashi, J. I., Sano, Y., Nojiri, Y., & Tchoua, F. (1990). Geochemical difference of basalts between polygenetic and monogenetic volcanoes in the central part of the Cameroon volcanic line. Geochemical Journal, 24(6), 357-370. doi.org/10.2343/geochemj.24.357

Lee, D. C., Halliday, A. N., Davies, G. R., Essene, E. J., Fitton, J. G., & Temdjim, R. (1996). Melt enrichment of shallow depleted mantle: a detailed petrological, trace element and isotopic study of mantle-derived xenoliths and megacrysts from the Cameroon Line. Journal of Petrology, 37(2), 415-441. doi.org/10.1093/petrology/37.2.415

Ballentine, C. J., Lee, D. C., & Halliday, A. N. (1997). Hafnium isotopic studies of the Cameroon line and new HIMU paradoxes. Chemical Geology, 139(1-4), 111-124. doi.org/10.1016/S0009-2541(97)00028-4

ⓘ Alumoåkermanite

Formula: (CaNa)Al[Si₂O₇]

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Amphibole Supergroup'

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

Locality: Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

References:

Vincent, P.M. 1971. New data about Cameroon Mountain volcano. Journal of the Geological Society, London, 127, 414-415.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Fitton, J. G., Kilburn, C. R. J., Thirlwall, M. F., & Hughes, D. J. (1983). 1982 eruption of Mount Cameroon, West Africa. Nature, 306(5941), 327-332.

Déruelle, B., N'ni, J., & Kambou, R. (1987). Mount Cameroon: an active volcano of the Cameroon Line. Journal of African Earth Sciences (1983), 6(2), 197-214. doi.org/10.1016/0899-5362(87)90061-3

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ Augite var. Titanium-bearing Augite

Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Biotite'

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

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Calcite

Formula: CaCO₃

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Clinopyroxene Subgroup'

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Diopside

Formula: CaMgSi₂O₆

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Fayalite-Forsterite Series'

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Nkoumbou, C., Deruelle, B., Velde, D. (1995): Petrology of Mt Etinde Nephelinite Series, Journal of Petrology, Vol. 36, no 2, p. 373-395

ⓘ 'Glass'

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Haüyne

Formula: Na₃Ca(Si₃Al₃)O₁₂(SO₄)

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Hedenbergite

Formula: CaFe²⁺Si₂O₆

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Hypersthene'

Formula: (Mg,Fe)SiO₃

Locality: Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

References:

Vincent, P.M. 1971. New data about Cameroon Mountain volcano. Journal of the Geological Society, London, 127, 414-415.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Fitton, J. G., Kilburn, C. R. J., Thirlwall, M. F., & Hughes, D. J. (1983). 1982 eruption of Mount Cameroon, West Africa. Nature, 306(5941), 327-332.

Déruelle, B., N'ni, J., & Kambou, R. (1987). Mount Cameroon: an active volcano of the Cameroon Line. Journal of African Earth Sciences (1983), 6(2), 197-214. doi.org/10.1016/0899-5362(87)90061-3

ⓘ Kaersutite

Formula: NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂

Locality: Bioko Island, Insular Region, Equatorial Guinea

References:

Thomé, Raoul C. Mitchell (1970) Geology of the South Atlantic Islands - Beiträge Zur Regionalen Geologie der Erde No. 10. Gerbrüder Borntraeger.

Piper, J. D. A., & Richardson, A. (1972). The palaeomagnetism of the Gulf of Guinea volcanic province, West Africa. Geophysical Journal International, 29(2), 147-171.

Déruelle, B., Moreau, C., Nkoumbou, C., Kambou, R., Lissom, J., Njonfang, E., & Nono, A. (1991). The Cameroon Line: a review. Pp. 274À327 in: Magmatism in Extensional Structural Settings (AB Kampunzu & RT Lubala). Springer-Verlag, Berlin, 274-327.

ⓘ Leucite

Formula: K(AlSi₂O₆)

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Nkoumbou, C., Deruelle, B., Velde, D. (1995): Petrology of Mt Etinde Nephelinite Series, Journal of Petrology, Vol. 36, no 2, p. 373-395

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ Magnetite var. Titanium-bearing Magnetite

Formula: Fe²⁺(Fe³⁺,Ti)₂O₄

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Melilite Group'

Formula: Ca₂M(XSiO₇)

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Mica Group'

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Microcline var. Hyalophane

Formula: (K,Ba)[Al(Si,Al)Si₂O₈]

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Bioko Island, Insular Region, Equatorial Guinea
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ Nosean

Formula: Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O

Localities:

Mount Etinde, Buea, Fako, Southwest Region, Cameroon
Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

ⓘ Perovskite

Formula: CaTiO₃

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Nkoumbou, C., Deruelle, B., Velde, D. (1995): Petrology of Mt Etinde Nephelinite Series, Journal of Petrology, Vol. 36, no 2, p. 373-395

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

Locality: Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

References:

Vincent, P.M. 1971. New data about Cameroon Mountain volcano. Journal of the Geological Society, London, 127, 414-415.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Fitton, J. G., Kilburn, C. R. J., Thirlwall, M. F., & Hughes, D. J. (1983). 1982 eruption of Mount Cameroon, West Africa. Nature, 306(5941), 327-332.

Déruelle, B., N'ni, J., & Kambou, R. (1987). Mount Cameroon: an active volcano of the Cameroon Line. Journal of African Earth Sciences (1983), 6(2), 197-214. doi.org/10.1016/0899-5362(87)90061-3

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Locality: Mount Cameroon, Buea, Fako, Southwest Region, Cameroon

References:

Vincent, P.M. 1971. New data about Cameroon Mountain volcano. Journal of the Geological Society, London, 127, 414-415.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Fitton, J. G., Kilburn, C. R. J., Thirlwall, M. F., & Hughes, D. J. (1983). 1982 eruption of Mount Cameroon, West Africa. Nature, 306(5941), 327-332.

Déruelle, B., N'ni, J., & Kambou, R. (1987). Mount Cameroon: an active volcano of the Cameroon Line. Journal of African Earth Sciences (1983), 6(2), 197-214. doi.org/10.1016/0899-5362(87)90061-3

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Rhombohedral Carbonate'

Formula: (Ca/Mg/Fe/Mn etc)CO₃

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Schorlomite

Formula: Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

February 2001

Vol. 13

p. 121-125

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Sodalite

Formula: Na₄(Si₃Al₃)O₁₂Cl

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ Titanite

Formula: CaTi(SiO₄)O

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

ⓘ 'Zeolite Group'

Locality: Mount Etinde, Buea, Fako, Southwest Region, Cameroon

References:

doi.org/10.1017/S0016756800064128

doi.org/10.1093/petrology/36.2.373

Lacroix, Alfred (1923) Minéralogie de Madagascar Tome 3 - Lithologie Appendice - Index Geographique. Société d'Éditions Géographiques, Maritimes et Coloniales, Paris. p.1-450.

Gèze, B. (1943). Géographie physique et géologie du Cameroun occidental (Vol. 17). Éditions du Muséum, 1-271.

Jérémine, E. (1943). Contribution à l'étude pétrographique du Cameroun Occidental. In: Memoires du Museum National d'Histoire Naturelle. Paris, NS, 17, 273-320.

Smith, A. L. (1970). Sphene, perovskite and coexisting Fe-Ti oxide minerals. American Mineralogist: Journal of Earth and Planetary Materials, 55(1-2), 264-269.

Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	var. Titanium-bearing Magnetite	4.BB.05	Fe²⁺(Fe³⁺,Ti)₂O₄
ⓘ	Perovskite	4.CC.30	CaTiO₃
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Schorlomite	9.AD.25	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Alumoåkermanite	9.BB.10	(CaNa)Al[Si₂O₇]
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Hedenbergite	9.DA.15	CaFe²⁺Si₂O₆
ⓘ	Augite var. Titanium-bearing Augite	9.DA.15	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Kaersutite	9.DE.15	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
ⓘ	Aenigmatite	9.DH.40	Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Microcline var. Hyalophane	9.FA.30	(K,Ba)[Al(Si,Al)Si₂O₈]
ⓘ	Haüyne	9.FB.10	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
ⓘ	Nosean	9.FB.10	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
ⓘ	Sodalite	9.FB.10	Na₄(Si₃Al₃)O₁₂Cl
ⓘ	'Zeolite Group'	9.G0.
ⓘ	Leucite	9.GB.05	K(AlSi₂O₆)
Unclassified
ⓘ	'Alkali Feldspar'	-
ⓘ	'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
ⓘ	'Hypersthene'	-	(Mg,Fe)SiO₃
ⓘ	'Mica Group'	-
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃
ⓘ	'Glass'	-
ⓘ	'Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)
ⓘ	'Melilite Group'	-	Ca₂M(XSiO₇)
ⓘ	'Rhombohedral Carbonate'	-	(Ca/Mg/Fe/Mn etc)CO₃

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
O	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
O	ⓘ Microcline var. Hyalophane	(K,Ba)[Al(Si,Al)Si₂O₈]
O	ⓘ Hypersthene	(Mg,Fe)SiO₃
O	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
O	ⓘ Leucite	K(AlSi₂O₆)
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
O	ⓘ Perovskite	CaTiO₃
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Schorlomite	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
O	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
O	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
O	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
O	ⓘ Melilite Group	Ca₂M(XSiO₇)
O	ⓘ Alumoåkermanite	(CaNa)Al[Si₂O₇]
O	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
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
F	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Na	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Na	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
Na	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Na	ⓘ Alumoåkermanite	(CaNa)Al[Si₂O₇]
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Hypersthene	(Mg,Fe)SiO₃
Mg	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Fayalite-Forsterite Series
Mg	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Mg	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Al	ⓘ Microcline var. Hyalophane	(K,Ba)[Al(Si,Al)Si₂O₈]
Al	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Al	ⓘ Leucite	K(AlSi₂O₆)
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Al	ⓘ Alumoåkermanite	(CaNa)Al[Si₂O₇]
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Si	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Si	ⓘ Microcline var. Hyalophane	(K,Ba)[Al(Si,Al)Si₂O₈]
Si	ⓘ Hypersthene	(Mg,Fe)SiO₃
Si	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Si	ⓘ Leucite	K(AlSi₂O₆)
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Schorlomite	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
Si	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Si	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Si	ⓘ Melilite Group	Ca₂M(XSiO₇)
Si	ⓘ Alumoåkermanite	(CaNa)Al[Si₂O₇]
P	Phosphorus
P	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
S	Sulfur
S	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
S	ⓘ Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Cl	ⓘ Sodalite	Na₄(Si₃Al₃)O₁₂Cl
Cl	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Microcline var. Hyalophane	(K,Ba)[Al(Si,Al)Si₂O₈]
K	ⓘ Leucite	K(AlSi₂O₆)
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)
Ca	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Ca	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Ca	ⓘ Perovskite	CaTiO₃
Ca	ⓘ Schorlomite	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Ca	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ca	ⓘ Melilite Group	Ca₂M(XSiO₇)
Ca	ⓘ Alumoåkermanite	(CaNa)Al[Si₂O₇]
Ca	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Ti	Titanium
Ti	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
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	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Ti	ⓘ Perovskite	CaTiO₃
Ti	ⓘ Schorlomite	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Ti	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
Ti	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Mn	Manganese
Mn	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Aenigmatite	Na₄[Fe₁₀²⁺Ti₂]O₄[Si₁₂O₃₆]
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Fe	ⓘ Hypersthene	(Mg,Fe)SiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Schorlomite	Ca₃Ti₂(SiO₄)(Fe³⁺O₄)₂
Fe	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
Fe	ⓘ Fayalite-Forsterite Series
Fe	ⓘ Augite var. Titanium-bearing Augite	(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)₂O₆
Fe	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Ba	Barium
Ba	ⓘ Microcline var. Hyalophane	(K,Ba)[Al(Si,Al)Si₂O₈]

Geochronology

Mineralization age: Cenozoic : 6.3 Ma to 0.065 ± 0.1 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 Time

Rocks, Minerals and Events

ⓘ Nephelinite (youngest age)	0.065 ± 0.1 Ma	Mount Etinde, Buea, Fako, Southwest Region, Cameroon
ⓘ Nephelinite (oldest age)	0.082 ± 0.3 Ma	Mount Etinde, Buea, Fako, Southwest Region, Cameroon
ⓘ Nepheline	0.6 Ma	Mount Etinde, Buea, Fako, Southwest Region, Cameroon
ⓘ Melanocratic nephelinite	1.1 Ma	Mount Etinde, Buea, Fako, Southwest Region, Cameroon
ⓘ Basanite	1.1 Ma	Bioko Island, Insular Region, Equatorial Guinea

Neogene

Miocene

ⓘ Haüyne

6.3 Ma

Mount Etinde, Buea, Fako, Southwest Region, Cameroon

Fossils

There are 7 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

Youngest Fossil Listed

0.01 Ma (Pleistocene)

Oldest Fossil Listed

93.5 Ma (Late/Upper Cretaceous)

Stratigraphic Units

Unit	No. Occurrences	Age
Logbadjeck	2	83.5 - 70.6 Ma (Late/Upper Cretaceous)
Mungo River	38	86.3 - 83.6 Ma (Late/Upper Cretaceous)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Coilopoceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Coilopoceratidae : *Coilopoceras*	93.5 - 89.3 Ma Late/Upper Cretaceous
Forresteria genus	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : *Forresteria*	89.8 - 86.3 Ma Late/Upper Cretaceous
Hoplitoides genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Coilopoceratidae : *Hoplitoides*	93.5 - 89.3 Ma Late/Upper Cretaceous
Kamerunoceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : *Kamerunoceras*	93.5 - 89.3 Ma Late/Upper Cretaceous
Neoptychites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Vascoceratidae : *Neoptychites*	93.5 - 89.3 Ma Late/Upper Cretaceous
Peroniceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : *Peroniceras*	89.8 - 86.3 Ma Late/Upper Cretaceous
Romaniceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : *Romaniceras*	93.5 - 89.3 Ma Late/Upper Cretaceous
Solgerites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : *Solgerites*	89.8 - 86.3 Ma Late/Upper Cretaceous
Submortoniceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : *Submortoniceras*	86.3 - 83.6 Ma Late/Upper Cretaceous
Texanites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : *Texanites*	86.3 - 83.6 Ma Late/Upper Cretaceous
Tissotia genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : *Tissotia*	89.8 - 86.3 Ma Late/Upper Cretaceous
Nuculana genus	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : *Nuculana*	93.5 - 89.3 Ma Late/Upper Cretaceous
Sousa teuszii species	Animalia : Chordata : Mammalia : Cetacea : Delphinidae : Sousa : *Sousa teuszii*	0.0117 - 0 Ma Quaternary
Pachydesmoceras kamerunense species	Animalia : Mollusca : Cephalopoda : Ammonitida : Desmoceratidae : Pachydesmoceras : *Pachydesmoceras kamerunense*	93.5 - 89.3 Ma Late/Upper Cretaceous
Kamerunoceras eschii species	Animalia : Mollusca : Cephalopoda : Ammonitida : Acanthoceratidae : Kamerunoceras : *Kamerunoceras eschii*	93.5 - 89.3 Ma Late/Upper Cretaceous
Choffaticeras (Choffaticeras) subgenus	Animalia : Mollusca : Cephalopoda : Ammonitida : Pseudotissotiidae : Choffaticeras : *Choffaticeras (Choffaticeras)*	93.5 - 89.3 Ma Late/Upper Cretaceous
Benueites benueensis species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : Benueites : *Benueites benueensis*	93.5 - 89.3 Ma Late/Upper Cretaceous
Barroisiceras (Solgerites) brancoi species	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Solgerites : *Barroisiceras (Solgerites) brancoi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Watinoceras reesidei species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : Watinoceras : *Watinoceras reesidei*	93.5 - 89.3 Ma Late/Upper Cretaceous
Neoptychites cephalotus species	Animalia : Mollusca : Cephalopoda : Ammonitida : Vascoceratidae : Neoptychites : *Neoptychites cephalotus*	93.5 - 89.3 Ma Late/Upper Cretaceous
Harleites harlei species	Animalia : Mollusca : Cephalopoda : Ammonitida : Collignoniceratidae : Forresteria : *Harleites harlei*	89.8 - 86.3 Ma Late/Upper Cretaceous
Benueites mosquerae species	Animalia : Mollusca : Cephalopoda : Ammonitida : Acanthoceratidae : Benueites : *Benueites mosquerae*	93.5 - 89.3 Ma Late/Upper Cretaceous
Hoplitoides wohltmanni species	Animalia : Mollusca : Cephalopoda : Ammonitida : Coilopoceratidae : Hoplitoides : *Hoplitoides wohltmanni*	93.5 - 89.3 Ma Late/Upper Cretaceous
Mammites mutabilis species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : Mammites : *Mammites mutabilis*	93.5 - 89.3 Ma Late/Upper Cretaceous
Hoplitoides ingens species	Animalia : Mollusca : Cephalopoda : Ammonitida : Coilopoceratidae : Hoplitoides : *Hoplitoides ingens*	93.5 - 89.3 Ma Late/Upper Cretaceous
Watinoceras amudariense species	Animalia : Mollusca : Cephalopoda : Ammonitida : Acanthoceratidae : Watinoceras : *Watinoceras amudariense*	93.5 - 89.3 Ma Late/Upper Cretaceous
Hoplitoides gibbosulus species	Animalia : Mollusca : Cephalopoda : Ammonitida : Coilopoceratidae : Hoplitoides : *Hoplitoides gibbosulus*	93.5 - 89.3 Ma Late/Upper Cretaceous
Hoplitoides koeneni species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Coilopoceratidae : Hoplitoides : *Hoplitoides koeneni*	93.5 - 89.3 Ma Late/Upper Cretaceous
Bizarrus genus	Animalia : Mollusca : Gastropoda : Littorinimorpha : Aporrhaidae : *Bizarrus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Bizarrus dietrichi species	Animalia : Mollusca : Gastropoda : Aporrhaidae : Bizarrus : *Bizarrus dietrichi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Nuculana cultellus species	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Nuculana : *Nuculana cultellus*	93.5 - 89.3 Ma Late/Upper Cretaceous

Fossil Localities

Click to show 7 fossil localities

Cameroon

Quaternary🐚 Bay of Warships
Littoral Region
- Late/Upper Cretaceous🐚 Mungo
Southwest Region
- Late/Upper Cretaceous🐚 Balangi [Mungo River Fm]
- Late/Upper Cretaceous🐚 Loc. 12
- Late/Upper Cretaceous🐚 Loc. 14
- Late/Upper Cretaceous🐚 Loc. 27
- Late/Upper Cretaceous🐚 Near Bombe

Localities in this Region

Cameroon

Littoral Region
- Douala III
  - Logbaba
    - Oil field
Southwest Region
- Fako
  - Buea
    - Mount Cameroon
    - Mount Etinde

Equatorial Guinea

Insular Region
- ⭔Bioko Island

Other Regions, Features and Areas that Intersect

AfricaContinent

African PlateTectonic Plate

Central African MarginPassive Margin

Atlantic Ocean

African BasinOceanic Crust

Cameroon

Southwest Region
- Mont Cameroun National ParkNational Park

Equatorial Guinea

Insular Region
- Bioko IslandIsland

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.

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Mineral List

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Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Geochronology

Fossils

Localities in this Region

Other Regions, Features and Areas that Intersect

Douala basin, African Plate i
Regional Level Types
Douala basin Basin
African Plate Tectonic Plate