The highly evolved Klein Spitzkoppe Granitic Complex in central-western Namibia was emplaced epizonally in an anorogenic setting. The complex is part of the Cretaceous 137-134 Ma Damaraland Alkaline Province, linked to the Tristan da Cunha mantle plume. The Complex consists of two main subsolvus granite types: 1) a coarse-grained granite that forms the Klein Spitzkoppe Mountain, and 2) a surrounding equigranular or porphyritic medium-grained granite with abundant miarolitic cavities and pegmatite pockets. The granites contain annitic biotite and topaz as minor constituents. Columbite-tantalite and metamict zircon and monazite are common accessory minerals. Microgranite, associated with micrographic layers is a relatively minor granite variety, but shows similar composition as the two main granite types. A few rhyolitic dykes and lenses, often with flow banding, and several lamprophyric dykes are also minor intrusive phases. The contact with the surrounding country rocks of the Damara Sequence is often marked by layered marginal pegmatite (Stockscheider). In chemical composition (17 analyses) the three granite types overlap, with SiO2 74.6-77.9, TiO2 0.01, A12O3 12.2-13.4, FeOT 0.76-2.70, MgO 0.01, CaO 0.20-0.77, Na,O 3.33-4.48, K.0 3.84-5.11, P2O3 0.08 and F 0.25-0.81 wt
. The granites are characterised by high contents of Sn, Nb, Ta, Be and Li as well as high Rb/Sr (2.3-53.2), Rb/Ba (1.6-47.9) and Ga/Al (1.27-2.20). Rare earth patterns show slight relative depletion in LREEs (LaN/YbN 0.93-3.54), and a negative Eu anomaly (EuN/Eu*N 0.00-0.59). In tectonomagmatic discrimination diagrams the granites and rhyolites plot in the fields of within-plate and A-type granites. The medium-grained granite and microgranite of the complex are quarried for dimension stone. In addition, precious and semiprecious stones like topaz, beryl, fluorite and rock quartz are mined mainly by villagers. The Klein Spitzkoppe granites are similar in many respects to the Gross Spitzkoppe granites, but are slightly more evolved. Other granite complexes of the Damaraland Alkaline Province include Brandberg and Erongo. Deviating from the Erongo and Spitzkoppe complexes, the Brandberg Complex also includes alkaline granites