From Fig. 1, the cubical shape shows smooth angles and an isometric form [referred to as cubical silica], whereas the elongated shape is characterised by a longer particle length than particle width [referred to as elongated silica].
From Fig. 1,the cubical shape shows smooth angles and an isometricform [referred to as cubical silica], whereas the elongatedshape is characterised by a longer particle length thanparticle width [referred to as elongated silica].