9 Different Minerals Used as Abrasives
Mar 06, 2019· Extremely hard (Mohs 9) and sharp, corundum is also usefully brittle, breaking into sharp fragments that keep on cutting. It''s great for wood, metal, paint, and plastic. All sanding products today use artificial corundum aluminum oxide. If you find an old stash of emery cloth or paper, it probably uses the real mineral.