Fig. 11. Inner corner of a Ba-zoned orthoclase megacryst, showing well-developed concentric banding of tiny parallel plagioclase inclusions and change of orientation of the inclusions at the border. Inclusions generally disappear at the corner, but a few irregular tiny remnants occur in one of the layers at the corner (upper left). Many of the inclusions have sodic rims. At least one plagioclase inclusion coexists with an adjacent tiny plagioclase inclusion (black; center; about 1 mm above left end of scale) whose orientation is at right angles to the Ba-K layering.