Fig. 29. Transition between mafic enclave (Fig. 27, right side) and poikilitic microcline (grid-twinned; Fig. 28, left side). Many plagioclase grains in the microcline at and near the contact between the enclave and the microcline contain rim myrmekite with very tiny quartz vermicules (not easily seen in the field of view). Desolation Valley granodiorite. Thin section 203 from Loomis collection.