Figure F15. Photomicrograph of euhedral olivine with unaltered interior and rims altered to iddingsite and green clay in Unit 6 (Sample 197-1206A-18R-1 [Piece 4, 49-51 cm]) (cross-polarized light; field of view = 5 mm; photomicrograph 1206A-359).

Figure F15. Photomicrograph of euhedral olivine with unaltered interior and rims altered to iddingsite and green clay in Unit 6 (Sample 197-1206A-18R-1 [Piece 4, 49-51 cm]) (cross-polarized light; field of view = 5 mm; photomicrograph 1206A-359).