Figure F29. Photomicrograph showing a solid-liquid-vapor fluid inclusion (arrow) in quartz containing an isotropic (gray, upper right) and a birefringent daughter crystal (bright, lower left). The vapor bubble is in the upper left corner (Sample 209-1272A-3R-1, 96–98 cm) (cross-polarized light: blue + dark gray filters; field of view = 0.35 mm; image 1272A_012).