Fig. 6.-Isolated relicts of plagioclase in K-feldspar (K)

Plagioclase Pl is replaced by the K-feldspar K single prime.  K single prime has the continuous orientation as the primary K-feldspar K, but lacks perthitic albite compared with K. Crossed polars. Huangshatang two-mica granite, Zhuguangshan batholith, Guangdong Province.