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Okenyenya Complex, Dâures Constituency, Erongo Region, Namibiai
Regional Level Types
Okenyenya ComplexComplex
Dâures ConstituencyConstituency
Erongo RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
20° 52' South , 15° 19' East
Latitude & Longitude (decimal):
-20.86667,15.31667
GeoHash:
G#: kk6ck936b
GRN:
S14E11
Type:
Complex
Age:
133 to 123.4 ± 1.4 Ma
Geologic Time:
Early/Lower Cretaceous
Dating method:
K-Ar; Rb-Sr
Reference for age:
Watkins et al. 1994; Milner et al. 1993
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
408166
Long-form identifier:
mindat:1:2:408166:4
GUID (UUID V4):
0


The intrusive rocks of Okenyenya cover an area of about 20 km² and form inselbergs rising from a plain of strongly folded Damara sediments and associated granites on which lie unconformably Karoo sediments.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Alkali Feldspar'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Augite var. Ferroaugite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Augite var. Titanium-bearing Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Calcite
Formula: CaCO3
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Cancrinite
Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Clinopyroxene Subgroup'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Diopside
Formula: CaMgSi2O6
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Fayalite-Forsterite Series'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Feldspar Group'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Feldspar Group var. Perthite'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ 'Melilite Group'
Formula: Ca2M(XSiO7)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Microperthite'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Myrmekite'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Orthoclase
Formula: K(AlSi3O8)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Orthopyroxene Subgroup'
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Quartz
Formula: SiO2
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
ⓘ Zircon
Formula: Zr(SiO4)
References:
Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAugite
var. Titanium-bearing Augite		9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘvar. Ferroaugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘvar. Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘCancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
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
ⓘ'Feldspar Group'-
ⓘ'var. Perthite'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Orthopyroxene Subgroup'-
ⓘ'Microperthite'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Melilite Group'-Ca2M(XSiO7)
ⓘ'Myrmekite'-

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Hⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Oⓘ DiopsideCaMgSi2O6
Oⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ ZirconZr(SiO4)
Oⓘ Fayalite-Forsterite Series
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Melilite GroupCa2M(XSiO7)
Oⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Naⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ SodaliteNa4(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
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Mgⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Alⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Siⓘ DiopsideCaMgSi2O6
Siⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ ZirconZr(SiO4)
Siⓘ Fayalite-Forsterite Series
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Siⓘ Melilite GroupCa2M(XSiO7)
Siⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ SodaliteNa4(Si3Al3)O12Cl
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Caⓘ DiopsideCaMgSi2O6
Caⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Caⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Melilite GroupCa2M(XSiO7)
Caⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Feⓘ Fayalite-Forsterite Series
Feⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Feⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
ZrZirconium
Zrⓘ ZirconZr(SiO4)

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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References

Simpson, E.S.W. 1954. The Okenjeje igneous complex, South-West Africa. Transactions of the Geological Society of South Africa, 57, 125-173.
Watkins, R. T.; Le Roex, A. P. (1991) Petrology and structure of syenite intrusions of the Okenyenya igneous complex. Communications of the Geological Survey of Namibia, 7. 55-70
Milner, S. C., Le Roex, A. P., & Watkins, R. T. (1993). Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia. Geological Magazine, 130(3), 335-343. doi.org/10.1017/S001675680002001X
Watkins, R. T.; Le Roex, A. P. (1994) A reinvestigation of the Okenyenya igneous complex: a new geological map, structural interpretation and model of emplacement. Communications of the Geological Survey of Namibia, 9. 13-21
Watkins, R. T., McDougall, I., & Le Roex, A. P. (1994). K-Ar ages of the Brandberg and Okenyenya igneous complexes, north-western Namibia. Geologische Rundschau, 83(2), 348-356. doi.org/10.1007/BF00210550
Le Roex, A. P., Lanyon, R. (1998) Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume--Lithosphere Interactions. Journal of Petrology, 39 (6) 1117-1146 doi:10.1093/petroj/39.6.1117
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.208
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