mozambique 2003 25 1 the mineral industry of by thomas r yager in produced aluminum gold tantalum and such industrial minerals as bauxite bentonite other clays gemstones graphite salt country also coal natural gas building materials cement granite gravel limestone marble sand deposits asbestos copper diatomite feldspar uorspar gypsum iron ore manganese mica nepheline syenite perlite phosphate rock rare earths silica titanium are known to occur international monetary fund 2004c p 206 estimated that s gross domestic product gdp grew 7 compared with 4 2002 13 2001 construction accounted for 15 9 manufacturing electricity water 3 mining 0 at purchasing power parity amounted 22 2 billion 2004b 5 2004 output sector increased 32 52 production beryl tantalite more than offset decreases