20181019 ensp 0183 enspIn 1900 domestic production of talc was about 80 000 metric tons and pyrophyllite production was less than 5 000 tons Prior to 1900 annual production of talc and pyrophyllite were about 50 000 tons and a few hundred tons respectively Talc and pyrophyllite were used interchangeably in the early part of the century Major markets for milled