Speciality and other industrialRocks and minerals
Abrasives: garnet, staurolite, corundum; Asbestos (antophyllite, chrysotile, crocidolite); Attapulgite, sepiolite (clay); Bentonite (clay); Limestone, calcite (filler); Diatomite (kieselguhr); Graphite; Mica; Perlite; Quartz (massive / block for ferrosilicon); Quartz, optical & piezoelectrical use; Silica sand; Talc, pyrophyllite; Vermiculite; Wollastonite
CodeListValue