**6. Conclusions**

The rhyolite lavas from effusive Badi volcano, central Afar, show peralkaline affinity (predominantly pantellerite), as evidenced by the presence of modal aegerine and aenigmatite in the mineral assemblage. These lavas display flow banding defined by alternating lamellae of brown, non-vesicular (obsidian) and light, vesicular glasses. Flow banding is thought to arise from differences in vesicle abundances between the brown and light glasses. Such textural heterogeneity might have developed during magma flow in the conduit prior to magma extrusion. The scarcity of explosive products is explained by the fact that the Badi rhyolite domes and flows resulted from initially volatile-poor silicic magma that prevents build-up of a magmatic gas pressure which could cause explosive fragmentation. The Badi lavas flowed outward due to their high magma temperature and peralkaline affinity as the cause of the increased fluidity.
