|Latitude & Longitude (WGS84):||21° 23' 59'' South , 16° 1' 0'' East|
|Latitude & Longitude (decimal):||-21.40000,16.01667|
|Köppen climate type:||BWh : Hot deserts climate|
A large tungsten deposit on the Krantzberg Mt (1714 m above sea-level), now abandoned. Located 19 km SW of Omaruru on the border of Pistelwitz 128 and Omaruru Townlands 85 (farms). Presently, access is prohibited.
A greisen-hosted W ore deposit with minor F, Sn, Be, Bi, Mo, and Fe-Cu sulfides. The ores were localized through an episode of alteration-mineralization related to the emplacement and fractionation of the Erongo A-type granite; this H2O-poor, but B- and F-rich granite was intruded after the collapse of the Erongo caldera. Granite fractionation resulted in H+- and B-enriched fluids which metasomatized and mineralized the roof country rocks. Early-stage greisenization and the later sericitization were accompanied by the concentration of dominant wolframite, fluorite, beryl, and sulfides. This alteration-mineralization occurred along major lithological and structural breaks. Wolframite (ferberite) formed during a stage of high F activity in the hydrothermal system.
43 valid minerals.
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 Macrostrat.org
|Cambrian - Neoproterozoic|
485.4 - 1000 Ma
|Precambrian-Phanerozoic intrusive rocks|
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. 
541 - 1000 Ma
Age: Neoproterozoic (541 - 1000 Ma)
Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM.