Figure F46. Photomicrograph of flow-banded texture around sanidine phenocryst in the flow-banded rhyolite in Unit 6 (clast in conglomerate, Sample 183-1137A-34R-2, 113-117 cm). Note the microspherulites in the darker bands. The image is in plane-polarized light; field of view width = 1.4 mm.