We combine geo-referenced data on mining extraction of 14 minerals with information on conflict events at spatial resolution of 0.5 degree x 0.5 degree for all Africa over 1997-2010. Exploiting exogenous variations in world prices, we find a positive impact of mining on conflict at the local level. Quantitatively, our estimates suggest that the historical rise in mineral prices (commodity super-cycle) might explain up to one fourth of average violence across African countries over the period. We then document how the control of a mining area by a fighting group contributes to the escalation from local to global violence. Finally, we analyze the impact of corporate practices and transparency initiatives in the mining industry.