18 ensp 0183 ensp 9 2 aDVaNCe reLeaSe U S GeOLOGiCaL SUrVeY MiNeraLS YearBOOK 2014 Consumption in 2014 apparent consumption of barite increased by 16 to 3 21 Mt compared with that in 2013 table 1 U S sales of ground barite decreased by 4 to 3 41 Mt from 3 55 Mt in 2013 Sales in Louisiana decreased for the second consecutive