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Auas Mountains Occurrences, Windhoek Rural, Khomas Region, Namibiai
Regional Level Types
Auas Mountains OccurrencesGroup of Occurrences
Windhoek RuralConstituency
Khomas RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
22° 45' 0'' South , 17° 8' 59'' East
Latitude & Longitude (decimal):
-22.75000,17.15000
GeoHash:
G#: k7unw62px
GRN:
S16E12
Type:
Group of Occurrences
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Windhoek268,132 (2017)22.3km
Katutura21,243 (2018)26.8km
Mindat Locality ID:
408212
Long-form identifier:
mindat:1:2:408212:8
GUID (UUID V4):
0


Numerous occurrences of alkaline rocks are scattered over an area of about 25 x 20 km. Gevers (1934) identified several large vents, 44 trachyte and breccia plugs, 35 trachyte dikes and sills and 13 sills and several dikes of phonolite.

Soil sampling, subsequently confirmed by drilling, indficated Pb-Zn-Ag sulphide mineralization in the north-eastern part of the Regenstein Vent (Ferreira et al. 1979).

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

12 valid minerals.

Rock Types Recorded

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

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Alkali Feldspar'
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Apophyllite Group'
Formula: AB4[Si8O22]X · 8H2O
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Clinopyroxene Subgroup'
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Diopside
Formula: CaMgSi2O6
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Eudialyte
Formula: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Fayalite-Forsterite Series'
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Haüyne
Formula: Na3Ca(Si3Al3)O12(SO4)
ⓘ Leucite
Formula: K(AlSi2O6)
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Makatite
Formula: Na2Si4O8(OH)2 · 4H2O
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Monazite Group'
Formula: REE(PO4)
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Nosean
Formula: Na8(Al6Si6O24)(SO4) · H2O
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ 'Rhombohedral Carbonate'
Formula: (Ca/Mg/Fe/Mn etc)CO3
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Sanidine
Formula: K(AlSi3O8)
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
ⓘ Sphalerite
Formula: ZnS
References:
Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
Group 9 - Silicates
ⓘEudialyte9.CO.10Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘMakatite9.EE.45Na2Si4O8(OH)2 · 4H2O
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘHaüyne9.FB.10Na3Ca(Si3Al3)O12(SO4)
ⓘNosean9.FB.10Na8(Al6Si6O24)(SO4) · H2O
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
ⓘLeucite9.GB.05K(AlSi2O6)
Unclassified
ⓘ'Alkali Feldspar'-
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Apophyllite Group'-AB4[Si8O22]X · 8H2O
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Rhombohedral Carbonate'-(Ca/Mg/Fe/Mn etc)CO3

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ⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Hⓘ MakatiteNa2Si4O8(OH)2 · 4H2O
Hⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ DiopsideCaMgSi2O6
Oⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Oⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Oⓘ LeuciteK(AlSi2O6)
Oⓘ MakatiteNa2Si4O8(OH)2 · 4H2O
Oⓘ Monazite GroupREE(PO4)
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
Oⓘ SanidineK(AlSi3O8)
Oⓘ Fayalite-Forsterite Series
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
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ⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Naⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Naⓘ MakatiteNa2Si4O8(OH)2 · 4H2O
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
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ⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Alⓘ LeuciteK(AlSi2O6)
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
Alⓘ SanidineK(AlSi3O8)
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DiopsideCaMgSi2O6
Siⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Siⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Siⓘ LeuciteK(AlSi2O6)
Siⓘ MakatiteNa2Si4O8(OH)2 · 4H2O
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
Siⓘ SanidineK(AlSi3O8)
Siⓘ Fayalite-Forsterite Series
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Sⓘ NoseanNa8(Al6Si6O24)(SO4) · H2O
Sⓘ SphaleriteZnS
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)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ⓘ LeuciteK(AlSi2O6)
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ SanidineK(AlSi3O8)
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ DiopsideCaMgSi2O6
Caⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Caⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
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
MnManganese
Mnⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Feⓘ Fayalite-Forsterite Series
Feⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
ZnZinc
Znⓘ SphaleriteZnS
ZrZirconium
Zrⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2

Geochronology

Mineralization age: Oligocene : 33 ± 1 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Oligocene
ⓘ Phonolite33 ± 1 Ma

Localities in this Region

Namibia

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Gevers, T. W. (1933). Alkali-rocks in the Auas Mountains, south of Windhoek, SWA. South African Journal of Geology, 36(1), 77-88. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1737
Ferreira, C. A. M., Jacob, R. E., Marsh, J. S. (1979) Base-Metal Mineralization in Alkaline Pyroclastics - the Regenstein Vent, South West Africa. Transactions of the Geological Society of South Africa, 82.
Fitch, F. J., & Miller, J. A. (1984). Dating Karoo igneous rocks by the conventional K-Ar and 40Ar/39Ar age spectrum methods. In:Erlank, A.J. (ed.) Petrogenesis of the volcanic rocks of the Karoo Province. Geological Society of South Africa, Special Publication, 13, 247-266.
Von Knorring, O., & Franke, W. (1987). A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of SW Africa/Namibia, 3, 61.
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.212
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