Fig. 11. "Ghost myrmekite" also occurs in this photomicrograph of Rubidoux Mountain leucogranite. At the extinction position for microcline (black), clusters of quartz blebs (white) occur in faint traces of remnant plagioclase or as isolated oval islands in the microcline. The maximum sizes of the quartz blebs in the microcline match the maximum diameters of quartz vermicules in myrmekite (left side) where plagioclase is white and quartz vermicules are gray.