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Erongo Mountain, Karibib, Erongo Region, Namibia

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Latitude & Longitude (WGS84): 21° 40' South , 15° 40' East
Latitude & Longitude (decimal): -21.66667,15.66667
Köppen climate type:BWh : Hot deserts climate

The Erongo Mountain is 20 km north of the town of Usakos. Usakos is 140 km from Swakopmund on the highway between Swakopmund and Windhoek. The Erongo mountain is 65 km in diameter and stretches from Usakos to the town of Omaruru in the north.

NOTE on the mineral list: Foitite has been identified by Prof. Al Falster (unpublished results) as fibrous aggregates (see

Mineral List

59 valid minerals.


Mineralization age: Phanerozoic : 146.9 ± 5.4 Ma to 19.9 ± 4 Ma

Important note: This table is based only on rock and mineral ages recorded below 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
ⓘ Biotite (youngest age)19.9 ± 4 Ma
   Late Cretaceous
ⓘ Phlogopite (youngest age)78 ± 2.9 Ma
   Early Cretaceous
ⓘ Phlogopite (oldest age)132.5 ± 1.1 Ma
   Late Jurassic
ⓘ Biotite (oldest age)146.9 ± 5.4 Ma

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Cambrian - Neoproterozoic
485.4 - 1000 Ma

ID: 3184300
Precambrian-Phanerozoic intrusive rocks

Age: Neoproterozoic to Cambrian (485.4 - 1000 Ma)

Comments: Damara Granites

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gevers, T.W. and Frommurze, H.F. (1929). The tin-bearing pegmatites of the Erongo Area, South-West Africa. Transactions of the Geological Society of South Africa, volume 32, 111-149.
Cairncross, B. and U. Bahmann (2006) Famous Mineral Localities: The Erongo Mountains Namibia. Mineralogical Record 37, 361-470.
Bezing, L. von, Bode, R. & Jahn, S. (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 292-332 pp. (in English)
Cairncross, B., van Niekerk, H., Reinke, C. and Bahmann, U. (2010). Raspite from the Erongo Mountains, Namibia. Rocks & Minerals, 85, 272-274.
Lensing-Burgdorf, M., Watenphul, A., Schlüter, J., Mihailova, B. (2016): Crystal chemistry of tourmalines from the Erongo Mountains, Namibia, studied by Raman spectroscopy. European Journal of Mineralogy, 28, (in press)
Lum, J.E. (2017). A mineralogical and geochemical characterisation of beryl from Southern Africa. PhD thesis. University of Johannesburg, South Africa, 308 pages [Features analyses of Erongo Mountain beryl].

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