Figure F22. Serpentinized olivine (Ol) in troctolite (Thin Section 131; Sample 345-U1415P-16R-1, 100–102 cm). Plagioclase (Pl) adjacent to intensely serpentinized olivine is highly altered to prehnite (Pr). Srp = serpentine. A. Plane-polarized light. B. Under crossed polars.
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