Figure 2
(a) 3D view of the prior deposited barite crystals on the inner wall of the quartz capillary tube. Squares, triangles and circles highlight three types of crystals exhibited in different shapes. (b) 2D cross-sectional views of the same group of crystals at the dashed line position in (a) imaged at 0 min, 30 min and 60 min showing similar morphology. |