Mounana is a town in Gabon. It lies on the N3 road and from 1958 until the 1990s was a major uranium mining centre. The mine is now closed, a…Mounana is a town in Gabon. It lies on the N3 road and from 1958 until the 1990s was a major uranium mining centre. The mine is now closed, and it is now primarily a centre for agriculture. According to the 1993 census it had a population of 6,372 and in 2013 it had an estimated population of 12,437.