Silica Sand Is One Of The Raw Materials For The Cement Industry, Glass Industry, Ceramic Industry, Sand Blasting, And Light Brick Industry. For Each Industry, Each Having Specific Requirements Of Quality Silica Sand. Generally, Silica Sand In Indonesia Have A Minimum Composition Of 90% Sio2, Fe2o3 Between 0, 01-0, 4%, Al2o3, Cao, Mgo, Tio2, Na2o, Tio2, With White, Off-White, Or Reddish White.