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Ogonja Mine (Onganja Mine; Emke Mine; Emka; Otjisongati), Ogonja (Onganja), Seeis, Windhoek District, Khomas Region, Namibia

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Latitude & Longitude (WGS84): 22° 5' 58'' South , 17° 27' 30'' East
Latitude & Longitude (decimal): -22.09968,17.45835
Köppen climate type:BSh : Hot semi-arid (steppe) climate

The Onganja mine is situated on Helen 235 & in the past ownership changed several times & was also known as Emke, Emka & Otjisongati.

The Onganja mine is situated on the Voitskopf vein which is continuous with the Maygift vein straddling the border between farms Helen 235 & Klein Onganja 148. Other veins in the immediate vicinity are Omahanga, Kronriff, Feldspatriff, Stanley, Kriegsfeldgang & several alphabetical veins A, B, E, F, G, H, L, N, all the veins are grouped as the Onganja mining area. Mineral specimens of cuprite & native copper came mostly from the Voitskopf-Maygift vein system.

Mineral List

22 valid minerals.

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

541 - 1000 Ma

ID: 1377178
Neoproterozoic sedimentary rocks

Age: Neoproterozoic (541 - 1000 Ma)

Description: Damara Supergroup

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

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.


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Cairncross, B. and Moir, S. (1996) Famous Mineral Localities: The Onganja Mining District, Namibia. Mineralogical Record, 27(2), 85-97.

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