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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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PhotosMapsSearch
Latitude & Longitude (WGS84):
20° 52' South , 15° 19' East
Latitude & Longitude (decimal):
-20.86667,15.31667
GeoHash:
G#: kk6ck936b
GRN:
S14E11
Locality 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


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.

Select Mineral List Type

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)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Alkali Feldspar'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Augite var. Ferroaugite
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Augite var. Titanium-bearing Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Calcite
Formula: CaCO3
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Cancrinite
Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Clinopyroxene Subgroup'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Diopside
Formula: CaMgSi2O6
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Fayalite-Forsterite Series'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Feldspar Group'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Feldspar Group var. Perthite'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Hornblende'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Melilite Group'
Formula: Ca2M(XSiO7)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Microperthite'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Myrmekite'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Orthoclase
Formula: K(AlSi3O8)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Orthopyroxene Subgroup'
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Quartz
Formula: SiO2
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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
ⓘ Zircon
Formula: Zr(SiO4)
Reference: 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.org/10.1093/petroj/39.6.1117 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 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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf 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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf 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

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
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘvar. Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘvar. Ferroaugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘvar. Titanium-bearing Augite9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘCancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘDiopside9.DA.15CaMgSi2O6
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
ⓘZircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
ⓘ'Alkali Feldspar'-
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Feldspar Group'-
ⓘ'var. Perthite'-
ⓘ'Hornblende'-
ⓘ'Melilite Group'-Ca2M(XSiO7)
ⓘ'Microperthite'-
ⓘ'Myrmekite'-
ⓘ'Orthopyroxene Subgroup'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
OOxygen
Oⓘ QuartzSiO2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ ZirconZr(SiO4)
Oⓘ Pyroxene GroupADSi2O6
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ CalciteCaCO3
Oⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Oⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Oⓘ Melilite GroupCa2M(XSiO7)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ DiopsideCaMgSi2O6
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ SodaliteNa4(Si3Al3)O12Cl
Naⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Naⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Mgⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ DiopsideCaMgSi2O6
AlAluminium
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Alⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
SiSilicon
Siⓘ QuartzSiO2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Siⓘ ZirconZr(SiO4)
Siⓘ Pyroxene GroupADSi2O6
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Siⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Siⓘ Melilite GroupCa2M(XSiO7)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ DiopsideCaMgSi2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Clⓘ SodaliteNa4(Si3Al3)O12Cl
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Caⓘ CalciteCaCO3
Caⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Caⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Caⓘ Melilite GroupCa2M(XSiO7)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ DiopsideCaMgSi2O6
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Feⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22OH2
Feⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
ZrZirconium
Zrⓘ ZirconZr(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Woolley, A. R. (2001). Alkaline rocks and carbonatites of the world. Part 3: Africa. Geological Society. Natural History Museum, London, p. 208.
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.org/10.1093/petroj/39.6.1117
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
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 Namibia, 7, 55-70. http://www.mme.gov.na/files/publications/433_Watkins%20and%20le%20Roex_Okonyenya%20IC.pdf
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. http://www.mme.gov.na/files/publications/09b_Watkins%20and%20Le%20Roex_Okonyenya%20IC.pdf
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

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