Figure F30. Partially altered olivine phenocrysts preserving incipient alteration to brown smectite in Sample 192-1187A-15R-4 (Piece 1B, 42-44 cm). Plagioclase is unaltered (field of view = 2.8 mm; plane-polarized light; photomicrograph ID# 1187A

Figure F30. Partially altered olivine phenocrysts preserving incipient alteration to brown smectite in Sample 192-1187A-15R-4 (Piece 1B, 42-44 cm). Plagioclase is unaltered (field of view = 2.8 mm; plane-polarized light; photomicrograph ID# 1187A_252).