fly ash.
Silica.
Silica sand.
Activated Fullers Earth (Bentonite).
Quartz Lumps.
Lithium ore.
Barytes or barite ore.
Green aventurine (green quartz) rough.
Quartz Lumps.
Silica Sand.
Antimony Ore.
Iron ore.
Bentonite.
Calcined clay.
Copper ore.
Chrome ore.
Barite Ore.
quartz lumps.