Nepheline from Khomas Region, Namibia

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Namibia
Khomas Region Windhoek Rural Aris ⓘ Aris Quarries	Jost, B.M., Koller, F., Vogel, N., Ulmer, P., and Driesner, T. (2014) Origin of water in miarolitic cavities of the Ariskop phonolite, Namibia. Goldschmidt 2014, 8-13 June, Sacramento, California USA, Abstracts, 1177. Koller F, Skoda R, Palfi A, Popp F, Jost B (2014) Paleogene phonolites of the Aris, Staalhart and Klinghardt groups, central and south Namibia, Africa. 21 st meeting of the International Mineralogical Association. p 194 Yakovenchuk, V. N., Ivanyuk, G. Y., Pakhomovsky, Y. A., Selivanova, E. A., Mikhailova, J. A., Krivovichev, S. V., Zolotarev, A. A., Zalkind, O. A. (2011) Ellingsenite, Na₅Ca₆Si₁₈O₃₈(OH)₁₃·6H₂O, a new martinite-related mineral species from phonolite of the Aris alkaline complex, Namibia. The Canadian Mineralogist, 49 (5) 1165-1173 doi:10.3749/canmin.49.5.1165 Rocks & Min. (2007) 82: 243-244 von Knorring, O. and Franke, W. (1987) A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of South West Africa / Namibia, 3, 65 [http://www.koeln.netsurf.de/~w.steffens/aris.htm]
Auas Mountains Occurrences ⓘ Regenstein Vent	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. 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. 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. 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
ⓘ Duruchaus Farm 249	De Kock, W.P. 1934. The geology of the western Rehoboth. An explanation of Sheet f.33-W.3 (Rehoboth). Memoir, Department of Mines, South West Africa, 1.
ⓘ Stalhart volcanic field	Koller F, Skoda R, Palfi A, Popp F, Jost B (2014) Paleogene phonolites of the Aris, Staalhart and Klinghardt groups, central and south Namibia, Africa. 21 st meeting of the International Mineralogical Association. p 194