Fig. 2.-Intense nibble replacement of albite ( 0.8 mm thick) towards K-feldspar

The isolated relicts of perthitic albite Ab₁ remain in the replacive albite Ab single prime containing tiny myrmekitic quartz. A---Crossed polars. B---Plus quartz plate. C---Local magnification of replacive albite.  Naqin leucogranite, Taishan County, Guangdong Province.