Fig. 59.-Nibble albitization occurs first, followed by nibble K-feldspathization at the contact between two K-feldspars (K₁, K₂)

The swapped albite is retained as two groups of albite relicts because the width of K-feldspathization is nearly equal to that of the swapped albite. Medium-grained porphyritic granite in Zhuguangshan batholith, Guangdong Province.