Figure F20. Orthopyroxene-bearing olivine gabbro illustrating the crystallization order for olivine (Ol), orthopyroxene (Opx), plagioclase, and clinopyroxene (Cpx) (Thin Section 118; Sample 345-U1415P-9R-1, 36–41 cm [Piece 3]). A. Plane-polarized light. B. Under crossed polars. White boxes indicate the locations of C and D. C. Skeletal olivine (Ol) is intergrown with orthopyroxene (gray) and plagioclase. D. Late clinopyroxene (orange) is interstitial to all phases.
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