Sand stone, quartz.
Sand silica, quartz.
Quartz, potassium, soda, mica, rock phosphate.
Quartz lumps and metal, silica sand, bentonite lumps and powder.
Quartz, granite.
Quartz lumps and silica.
Feldspar, quartz, silica sand.
Silica sand, silica quartz.
Quartz ans crystal.
Pink quartz, white quartz, red quartz, yellow quartz, grade quartz powder & in precious stone & semi precious stone.
Silica ramming mass, exfoliated vermiculite, silica, quarts powder, quartz grains, potash powder, soda powder.
Quartz and fledspar.
Talc powder (soapstone powder), quartz powder, emery powder.
Wollestonite, potash, quartz and marble.
Quartz rough, feldspar rough, silica powder, feldspar powder.
Silica sand, quartz sand.
Quartz and silica sand.
Quartzite and quartz.
Feldspur pottash, quartz sand, diatomaceous earth.
White quartz lump, white stone powder.
