Aluminum Oxide Mineral

Aluminum oxide is the second-hardest mineral after diamond. Opta Minerals makes brown aluminum oxide produced by fusing bauxite and anthracite in an electric arc furnace at high temperature. The resulting oxide is over 95%  Al203. Its high density and angular sharpness make it one of the fastest, most versatile and economical cutting abrasives available, usable in both dry and wet blasting applications from cleaning and deburring to etching and finishing. Opta Minerals offers a wide range of grades to meet the particular needs of your job, from a coarse profile to a micro finish.