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Figure F18. Boundary between olivine (Ol)- and orthopyroxene (Opx)-bearing gabbro and troctolite (red dashed line) (Thin Section 38; Sample 345-U1415J-5R-1, 129–143 cm [Piece 18]). Cpx = clinopyroxene, Pl = plagioclase. Boundary type = grain size and modal and boundary definition = sutured. A. Core close-up. B. Plane-polarized light. C. Under crossed polars.

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