Figure F6. Gabbronorite (Thin Section 1; Sample 345-U1415E-1R-1, 21–23 cm [Piece 3]). A. Patch (inferred to be an inclusion) of ophitic textured microgabbro (red outline) surrounded by coarser grained gabbronorite, in which pyroxene is pervasively replaced by green amphibole along fractures and cleavage planes. B, C. Detail from within the finer grained inclusion showing ophitic texture overprinted by grain boundary migration. Plg = plagioclase, Amph = amphibole, Cpx = clinopyroxene. B is under plane polarized light; C is under crossed polars.
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