Figure F19. Photomicrograph of serpentinized harzburgite showing a typical hourglass texture with black, anastomosing serpentine + magnetite veins (north-northwest–south-southeast) cut by white chrysotile (cross fiber, length fast) + magnetite veins (Sample 209-1268A-18R-3, 5–7 cm) (cross-polarized light: blue + light gray filters; field of view = 1.4 mm; image 1268_033).