Quartz.
Quartz.
Quartz lumps (80mm-150mm), quartz chips( 10mm-20mm), quartz grits(0.1 - 0.3 mm, 0.3-0.7mm, 0.7-1.2mm, 1.2-2.5mm, 2.5-4.0mm, 4.0-6.0mm), quartz powder ( 200 mesh, 325 mesh, 400 mesh, 37 microns)..
Quartzite (silica sand).
Quartz, quartzite, feldspar, iron ore and bentonite..Trading.