turkey 2004 56 1 where necessary values have been converted from turkish lira tl to us dollars at the average rate of tl1 448 899 00 for and 528 854 2003 2 references that include a section mark are found in internet cited mineral industry by philip m mobbs had diverse dynamic nation was leading producer barite boron minerals celestite strontium chromite feldspar limestone magnesite marble perlite pumice significant source value added processed commodities such as cement ceramics glass steel national economy continued its recovery severe economic crisis 2001 inflation declined an annual 10 6 which 30 year low down 25 3 44 8 2002 s gross domestic product gdp based on purchasing power parity estimated be about 530 billion per capita 7 503 international monetary fund 2005 total exports were valued 63