Figure F54. Blotchy silicified rock (Unit 25) with remnant pale-green patches of clay-rich material with fine disseminated magnetite (black spotting), surrounded by darker pervasively silicified material (interval 193-1188A-21R-1, 20-34 cm).

Figure F54. Blotchy silicified rock (Unit 25) with remnant pale-green patches of clay-rich material with fine disseminated magnetite (black spotting), surrounded by darker pervasively silicified material (interval 193-1188A-21R-1, 20-34 cm).