Figure F37. Unaltered olivine phenocrysts in an aphanitic groundmass and an altered spherulite with altered olivine phenocrysts at its center in Sample 192-1185A-10R-2 (Piece 1A, 3-6 cm), Unit 5B (field of view = 2.8 mm; crossed polars; photomicrograph ID# 1185A

Figure F37. Unaltered olivine phenocrysts in an aphanitic groundmass and an altered spherulite with altered olivine phenocrysts at its center in Sample 192-1185A-10R-2 (Piece 1A, 3-6 cm), Unit 5B (field of view = 2.8 mm; crossed polars; photomicrograph ID# 1185A_139).