Fig. 7. Poikilitic K-feldspar (light gray) penetrates along grain boundaries and replaces the albite twinned plagioclase (black, gray, and white). Rim myrmekite has formed on one of the plagioclase grains (top center) against the K-feldspar. Note pointed vein extension of K-feldspar (light gray) between two plagioclase crystals (white) on right side above black area. Biotite (brown; bottom). Center of Dicks Lake granodiorite pluton, north of contact with diorite. Thin section 392 from Loomis collection.