The Navachab deposit is a reduced gold skarn in the neoproterozoic Damara Orogen in Namibia. Calc-silicate mineralogy differs from typical gold skarns; Navachab garnets are subcalcic with up to 90 mole% pyralspite and pyroxene contains up to 16 mole% johannsenite. The metasomatic zonation from marble towards skarn involves an increase in Si, Fe and Mn. Initially, the zonation reflects the protolith, a banded marble, as evidenced by growth of garnet in pelitic layers and clinopyroxene in carbonate layers. Ore mineralisation is divided into two paragenesis: stage I containing pyrrhotite, chalcopyrite, arsenopyrite and sphalerite and stage II with pyrite, maldonite, bismuth and gold. The P-T conditions were determined by sphalerite and arsenopyrite geobarometry/-thermometry. Sphalerite yields pressures of 2-2.5 kb and a temperature of 590 °C, arsenopyrite yields temperatures of 575± 15°C, correlating with the HT-LP-metamorphism in the central Damara Orogen. However, P-T-conditions of Navachab are higher compared to gold skarns directly associated with intrusions. This is consistent with deposits like Lucky Draw and Tillicum, that are hybrids between a regional metamorphic environment and Phanerozoic plutonism. A barren, camptonitic metalamprophyre is considered to represent a redox-trap for Au-bearing fluids and its unusual, Mn- and Fe-rich composition is reflected in the skarn mineralogy.