Figure F5. Highly altered troctolite (Sample 345-U1415E-1R-1, 30–33 cm [Piece 4]). The troctolite is equigranular rock with granular texture consisting of olivine (40%), plagioclase (45%), and clinopyroxene (15%), with trace amounts of oxide. Clinopyroxene occurs as subhedral to euhedral prismatic grains. Ol = olivine (completely altered to serpentine and magnetite), Pl = plagioclase, Cpx = clinopyroxene. A. Core close-up. B. Thin section image (Thin Section 2; plane-polarized light).
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