In Hungary, the mining industry is not a key sector of the
economy. In the country, there are producers of crude construction
materials, including aggregates, crushed rock, dimension stone,
gravel and sand and other metallic minerals, including gallium and
manganese. Hungary is estimated to be the fifth ranked producer
of perlite. Production of bauxite and alumina may only be of some
importance on the European market. In 2012, the value of production
of the mining and quarrying sector accounted for 0.35% of
the GDP (USGS, 2013, as of 2012).