AllAfrica.com reported the value of Rwanda’s minerals fell from 67.7% recorded between January and June 2011 to 64.6% in the same period of 2012 indicating a fall of 4.5%.
As quoted in the market news:
Rwanda’s mining and quarrying sector accounted for only about 0.7% of the gross domestic product according to the mineral industry report of 2010.
Some of the minerals include tantalum, (accounting for 15% of world tantalum mine production in 2010), columbite-tantalite, cassiterite (tin ore), and wolframite (tungsten ore). Though Rwanda does a lot of domestic mining, it also benefits a lot from re-exports from mining operations in the Democratic Republic of the Congo.