Fig. 7. Myrmekite granules with tiny quartz vermicules (black) on borders of two grid twinned K-feldspar crystals (light gray; lower left and upper right). Together these myrmekite granules constitute double lobes. The myrmekitic borders are separated by trails of muscovite flakes mixed with granulated quartz. Image is same scale as Fig. 5. Photomicrograph is from Nanguan granite, North Hebei Province.