Fig. 17. The aggregate mass of normally zoned plagioclase crystals (top center) crystallized with their longer dimensions parallel to each other and are right angles to the inlcusions in the megacryst. These crystals project into the orthoclase megacryst (light gray) from its edge but near the rectangular corner of the megacryst. Two plagioclase grains at the right corner of the aggregate mass adjacent to the myrmekite are parallel to the plagioclase inclusions. The myrmekite has very tiny quartz vermicules (black and white) and is in the right lower corner of the aggregate mass. Quartz (white; right side).