About 10 km south of Mickberg (No. 116-00-047) two small plugs form low rounded hills in a sandy flat (Verwoerd, 1993). The northernmost plug consists of gneissic fragments of country rock set in a gritty matrix with a variable brown-weathering content of ankerite. Beforsite dykes cut the breccia and extend into the country rock leucocratic gneisses. The second plug is similar but with less ankerite in the matrix. As well as beforsite dykes there is a 2 m wide calcite carbonatite dyke which at its southern end contains patches of galena, chalcopyrite, limonite, malachite, chrysocolla and quartz.