Figure F23. Boundary between troctolite and olivine (Ol) gabbro (red dashed lines) (Thin Section 58; Sample 345-U1415J-10R-1, 39–55 cm [Piece 6B]). Boundary type = grain size and modal; boundary definition = gradational. A. Core close-up. B. Plane-polarized light. (Ol) = altered olivine, Cpx = clinopyroxene, Pl = plagioclase. C. Under crossed polars.
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