Figure F51. Skeletal plagioclase laths set in a quench-textured groundmass of clinopyroxene, plagioclase, and glass (altered to clay) in Sample 192-1183A-58R-3 (Piece 13, 109-112 cm), Unit 5B. Groundmass titanomagnetite (the small, bright grains) is unaltered (field of view = 0.7 mm; taken in plane-polarized reflected light with a blue filter; photomicrograph ID#1183A

Figure F51. Skeletal plagioclase laths set in a quench-textured groundmass of clinopyroxene, plagioclase, and glass (altered to clay) in Sample 192-1183A-58R-3 (Piece 13, 109-112 cm), Unit 5B. Groundmass titanomagnetite (the small, bright grains) is unaltered (field of view = 0.7 mm; taken in plane-polarized reflected light with a blue filter; photomicrograph ID#1183A_008).